Frigidaire Serial Number Nomenclature

1. Kumpulan Serial Number Idm
2. Frigidaire Model Numbers Explained
3. Frigidaire Serial Number Nomenclature Number
4. Frigidaire Serial Number Nomenclature Code
5. Frigidaire Serial Number Nomenclature Lookup
6. Frigidaire Dishwasher Serial Number Decoder

(not sure when “present” is) Serial Number format: L943321238 (This serial number is from an actual furnace). 21238 you will find the year and week of manufacture. The second and third digits are the year of manufacture and the fourth and fifth digits are the week. Week of 1994. 1 Answer from this member: This is a top mount refrigerator manufactured in 1984. The first and third numbers after the 106 is the date code, on this model. If you need more assistance, please resubmit your question with more details. FRIGIDAIRE SERIAL NUMBER LOCATION REFRIGERATOR. I located the serial number (BA61503561), but when I tried to give it to the help desk operators on two occasions, they claimed it didn't 'come up.' Thankfully, I was still able to make two appointments, but the problem persists. The first time, it was 'repaired' the bottom section went back.

• POST a QUESTION or READ FAQs about how to determine heating system age - boilers & furnaces

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Age of heating equipment & Systems:

GENERAL INFORMATION Model & Serial Number Location Model & Serial Number Label Location Figure 3 - Model / Serial Number Tech Sheet Location Tech Sheet Location (Access Under Cabinet Top) Figure 4 - Tech Sheet Location HybridCare™ Dryer with Heat Pump Technology. Page 10: Model & Serial Number Nomenclature. How to find the age of your Whirlpool appliance. You will need to find your serial/model tag and record the numbers and letters on this. The date code is the 3rd to last on your model number. Example model numbers: LRS6233 B W1= 1994, SF367PE Y W1= 1992, LE6685X P W1= 1985 or 2004, ET22PKX X W0= 1991, EV150CX K W0 = 1982 or 2001.

How to determine the age of your heating system and components. Here we provide several excellent sources for de-coding the data tag information on heating equipment.

Kumpulan Serial Number Idm

This article provides documents that explain and translate all of the data found on information tags and stickers used on heating & heat pump equipment, including equipment age, heating capacity, electrical requirements, and operating characteristics.

We also provide a MASTER INDEX to this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need.

Heating System Equipment Age - Guides for Reading HVAC & Water Heater Equipment Data Tags & Serial Numbers

If you don't know whether your heat is provided by a furnace (hot air) or boiler (hot water), or whether your fuel is oil, gas, or electric, and whether your heat is hot water, steam, or warm air, see HEATING SYSTEM TYPES.

Then return to this page for help finding the equipment's age or date of manufacture.

Five HVAC Heating & Air Conditioning Equipment Age & Data Tag Decoders

Our photo shows data tags on a Weil McLain gas fired heating boiler that was manufactured on 10/10/1996. [Click to enlarge any image]

We found the boiler age by de-coding the boiler's CP/serial number code on the white sticker just above the data tag. Below we explain how we did that.

For help in decoding air conditioner, boiler, furnace, heat pump, water heater data tags and determining the age, model, or specifications of that equipment, we provide five different research methods listed below.

1. AGE of HEATERS, BOILERS, FURNACES - you are on this page information about approaches to determine heating equipment age.
   
2. AIR CONDITIONER BOILER FURNACE AGE, MANUALS & PARTS GUIDES - HVAC - age, history, manuals & manufacturer contact information sorted by individual brand name.
   This separate article series gives manufacturer contact information, free manuals and repair guides, and more data tag decoding for just about all heating, air conditioning, and heat pump brands.
   You HVAC Equipment Age Decoders sorted by Manufacturer-Brand in These Guides
   

   MANUALS & PARTS GUIDES - HVAC Brands A-E - & Master Index to All Brand Names, HVAC manuals, wiring diagrams, installation and repair guides

   MANUALS & PARTS GUIDES - HVAC Brands F-I - Brand Names beginning with F - I HVAC manuals, wiring diagrams, installation and repair guides

   MANUALS & PARTS GUIDES - HVAC Brands J-O - Brand Names beginning with J - O HVAC manuals, wiring diagrams, installation and repair guides

   MANUALS & PARTS GUIDES - HVAC Brands P-S - Brand Names beginning with P - S HVAC manuals, wiring diagrams, installation and repair guides

   MANUALS & PARTS GUIDES - HVAC Brands T-Z - Brand Names beginning with T - Z HVAC manuals, wiring diagrams, installation and repair guides

   
   
3. AGE of AIR CONDITIONERS & HEAT PUMPS DATA TAG DECODER - data tag decoder using the serial number in the data tag to get cooling or heat pump equipment age
4. AGE of WATER HEATERS provides guides and water heater manuals sorted by brand, with extensive equipment data tag decoding information for water heaters.
5. Manufacturer websites: A few manufacturers offer free online boiler or furnace data tag decoders that give the equipment's age.
   We include links to any such websites we can find both here and in our
   ONLINE HVAC EQUIPMENT DATA TAG DECODER
   or
   AGE of AIR CONDITIONERS & HEAT PUMPS or MANUALS & PARTS GUIDES - HVAC pages that we listed just above.
   CONTACT us if you find a helpful manufacturer's site or data tag decoder that's not given in our four sources above.

Free Online HVAC Equipment Data Tag Decoders

We provide links to individual manufacturer's data tag decoding guides (Lennox, below), and to two excellent equipment data tag decoding books, by Scott LeMarr (online at this website) and the Carson Dunlop & Associates Ltd. Technical reference - the most extensive such document we've found.

For many heating or cooling equipment manufacturers, especially after 2000, decoding the equipment tag to obtain the age of the device is sometimes pretty easy.

But equipment age, capacity, specifications are not always so easy to recognize on the data tag. Here we explain how to dig out that information.

[Click to enlarge any image]

1. Lennox HVAC products Age: see our LENNOX Heater & Air Conditioner Model & Serial Number Decoding Guide [PDF] at this website. Also see

2.FURNACE AGE DECODING CHART [PDF] provided by home inspector Scott LeMarr has generously shared his document that decodes both furnace age for many brands of water heater, including hot water systems produced by the following manufacturers.

[PDF linked to return here. You can also use the 'BACK' button on your browser to return to this page at InspectAPedia.com.]

LeMarr's document provides decoding data for the following manufacturers:

Ambassador water heaters, American water heaters [3], ACE water heaters, A.O.Smith water heaters, Apollo, Aqua Temp, Aqua Therm, Best water heaters, Bosch water heaters, Bradford White, Cafos, Champion, Crosley, Energy Saver, Envirotemp water heaters, GE water heaters, Glascote water heaters, Golden Knight water heaters, GSW, Hotpoint water heaters, JC Penny, Jetglas, JW or John Wood, Kenmore water heaters (Sears Brand), Lochinvar, Lowes, Mainstream, Maytag water heaters, Montgomery Wards, Knight, PermGlas, Reliance water heaters, Revere, Rheem water heaters, Rheem/Rudd/Richmond water heaters, Rinnai, Security, Shamrock water heaters, Standard water heaters, State/Reliance/Sears brand water heaters, Thermo-King, Vanguard water heaters, US Craftsmaster, US Water Heaters, and Whirlpool water heaters..

3. Peerless Heating Boiler Age Decoder
   If the boiler was manufactured from 1984 to 1999, the serial number ends in a four digit date code. “123456-1284” would be manufactured in December, 1984.
   If the boiler was manufactured from 2000 to present, the serial number ends in a six digit date code. “123456-200505” would be manufactured in May, 2005.

4. Weil McLain Heating Boiler Age Decoder, at https://www.weil-mclain.com/cp-lookup will decode the heating boiler's CP/Serial Number. At the company's website you will find these instructions:
   Enter the 7-digit CP/Serial Number of the boiler to obtain the manufacturing date and any associated information on the product.
   If the CP# is only 6 digits, enter a leading zero, e.g. 0137718. This look-up will not give manufacturing information for any other Weil-McLain product but boilers. Currently, no information is available for EG and EGH boilers.
   For those models you'll need to call the manufacturer, found at WEIL McLAIN Manuals
   When using off-site links like the one we give above, use your browser's 'back' button to return to this website.

Carson Dunlop Associates' Technical Reference Guide decodes equipment data tags

Carson Dunlop Associates' Technical Reference Guide (below) provides the most extensive HVAC equipment data tag decoder & other information to determine the age of boilers, furnaces, water heaters, air conditioners, and heat pumps by decoding the product serial number.

For the most complete and very detailed HVAC equipment data tag and age decoding information anywhere (about 128 manufacturers & brands)

Carson Dunlop, Associates, Toronto, have provided us with (and we recommend) Carson Dunlop Weldon & Associates' Technical Reference Guide to manufacturer's model and serial number information for heating and cooling equipment
Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on any number of copies of the Technical Reference Guide purchased as a single order. Just enter INSPECTATRG in the order payment page 'Promo/Redemption' space.

The Carson Dunlop Technical Reference Guide provides both equipment data tag decoding data and also manufacturer contact information as well as historical dates for many brands of heating and cooling equipment. Included in the manufacturers listed are also makers of ancillary equipment such as controls, circulator pumps, etc., not just boilers, furnaces, and heat pumps themselves.

The age of a heating boiler, furnace, or heat pump can be determined by identifying its year of manufacture that is encoded in the unit's serial number (not the model number). The guides above give heater serial number decoding for each manufacturer and type of heating appliance.

For example, when decoding the age of an H.B. Smith heating boiler one of our readers provided the following from his boiler's data tag:

H.B. Smith, Westfield MA
Series G200
Boiler Model # G200-W-5CON
Serial # J80-2747

For an HB Smith boiler the age is typically the two digits following the letter at the beginning of the serial number. In this case the '80' following the 'J' tells us that the boiler was manufactured in 1980.

Later H.B. Smith boiler serial numbers use the format XXyyyy-nnnn where yyyy will be the four-digit year of manufacture.

Manufacturers & brands of HVAC Equipment and Parts identified and decoded in the CDA Technical Reference Guide include about 128 different brands of equipment sold in North America

Aaon, Inc., Ack-O-Matic ,Aero Burners, Aero Environmental, Airco, Airtemp and Tempmatic, Aitons' Equipment - APCO, Allanson Transformers, Amalgamated Electric, Amana, American Standard, American Standard Water Heater Group, Amtrol, Anthes, APCO, ARCO Air, Arkla Industries, Armstrong Air Conditioning Co., S.A. Armstrong,

Baltimore Aircoil of Canada, Bard, Bell & Gossett, Borg-Warner, Bradford White, Bristol Compressors, Bryant manufacturing Co. of Indianapolis, Buffalo Package Equipment, Bulloch, Burke Water System Industries, Burnham Corporation,

Canadian Tire Corporation, Carlyle Compressor Company, Carrier, Chromalox Canada, Chrysler, Clare Brothers, Clare Mega Save, Clare HECLA, Clawsey-Sohrt Manufacturing Co., Climate Control Products, Climate Master, Climatrol, Coleman, Comfort Aire, Copeland, Copelaweld Compressors, Crane, Davie Environmental Equipment, Day-Nite, DMO Industries, Ducane Heating Division, Dunham Bush, Duomatic, Economite, Elect-Aire, Electric Apparatus COmpany, Elliot, Emerson Electric Company, Enmar Enmar Systems, Envirotron, Esso, Evcon Industries,

F.P. Industries, Fairbanks Morse, Fedders, Fess, Findlays Limited, Flamemaster, Fleetline, Florida Heat Pump Manufacturing, FMC Corporation, FP Industries, Franklin Electric Company, Frick, Friedrich, Frigidaire, Frigiking, Fuel Master Burners, G.M.L. Manufacturing, GSW Inc., Galais Manufacturer, Galaxy Boilers, General Controls (ITT), General Electric, Gilbarco, Gilbert and Barker, Goettl, Good Cheer, Goodman, Grimsby Stove and Furnace Ltd.,

Heat Controller Inc., Heil, Hill York, Hitachi, Homart, Honeywell, Howard Furnace and Boilers, Howell Electric Motors Company, Hydrotherm Inc., I.C. Burners, ITT, Inglis, Inter City Gas (I.C.G.), International, International Comfort Products, Intertherm, Iron Fireman, Janitrol Heating and Air Cooling Conditioning, John Wood Co., Johnson Air Ease, Keeprite, kenmore, Koldwave, Kool-Fire, LG,

The Arthur S. Leitch Co., Lennox Industries, Lincoln, Louis Allis Company, Luxaire, Magic Chef Air Conditioning Co., Mgnatec, Marathon Electric, Marcus Transformer, Marley Cooling Tower, Marvair, McLary, McQuay International, Mestek, Metzger, Metropolitan Oil and Gas Industries, Mid Continent Metal Products Co., Miller, Mitsubishi, Modine, Mueller, N'Furno, Nordyne, Norseman Boilers, Oakwood Iron Works (OIW), Olsen,

Payne, Pendell Boiler Ltd., Philco, Powermatic, Precision Boilers, Preston, Pyreco, Raypak or Raypak, RBI Water Heaters, Refcan, Reznor ITT, Rheem, Roberts Gordon, RUUD, Sanyo, SJC Corporation, Scarboro Pump Manufacturing Co., Sears, Sears Roebuck, Severn Boiler, Simpsons-Sears, Shell, Singer, Slant Fin Ltd., A.O. Smith, H.B. Smith Co., Smith Boilers, Snyder General Corp., Spacepak, Spencer Boilers, State Industries, Sterling HVAC Products, Sun Dial Manufacturing Inc., Sunscan Compressors,

TACO (Canada), TACO, Tappan, TECO, Techumseh Compressors, Teledyne Laars, Tempmatic, Temprite, Tempstar, Thermo Pride, Trane, Typhoon, Unitary Products, viessman, Viking, Warden King, Water Furnace, Watts Regulator Co., Weben jarco, Weil-McLain, Westinghouse, Whirlpool, White-Rodgers, Wood, Worthington Air Coils Ltd., York - Borg Warner.

How to Use Heating Equipment as Indicators of Building Age or Building Age as to Figure Equipment Age

Indoor heating methods by historic periods or years: (adding date ranges is continuing for the list below - Contact Us to contribute).

Illustration of a Warn Air Heating System Using a Gravity Furnace

Our photo (left) shows a gravity warm-air 'octopus' furnace; in its earliest version these furnaces, installed in the late 1800's in the U.S. were coal fired; many were later converted to oil.

Gravity furnaces rely on natural convection (warm air rises) to deliver heat to the occupied space.

There is no blower fan in the system. In their simplest design, the gravity furnace system included no ductwork whatsoever. Rather a large grate was provided in the building floor just above the furnace itself. In a multi-story house, heat rose to upper floors by passing up the stairwell or through open registers in first floor ceilings.

The gravity furnace we show at left was a more advanced design in which an 'octopus' of duct work 'arms' delivered heat directly to individual areas of the building.

The furnace in our photo is taking much of its 'return air' from the basement - a very expensive way to heat a home. Earlier models eschewed ductwork and instead fed heat into the first floor of the building through a large central grate in the floor immediately above the furnace.

• Central fireplaces, no chimneys
• Indoor fireplaces, chimney in building or on exterior building wall
• Free-standing wood-burning stoves, the Franklin Stove
• Coal burning free-standing stoves;
• Kerosene stoves
• Coal fired octopus furnaces and steam boilers (photograph above) 1850 - 1930. Some of these heaters have continued into contemporary use after having converted to oil-burners.

• Oil burners: different types of oil burners, coal conversions, low speed, high speed, high efficiency.
  Audel's 1946 Oil Burner Guide originally sold for $1.00 U.S. and includes photos and sketches of its generation of oil heating burners, boilers, furnaces, radiators, steam and hydronic systems, as well as control devices. Frank Graham's no-heat diagnostic steps are still useful today and is provided free at InspectApedia.com beginnning
  at OIL HEAT TEXTBOOK

If you don't know what kind of heat your building uses, we explain how to figure out the answer
at HEATING SYSTEM TYPES.

Frigidaire Model Numbers Explained

If your heating system is not working properly,
see NO HEAT - BOILER or NO HEAT - FURNACE.

Beginning at HEATING SYSTEMS - home we discuss different types of heating systems such as

• AIR CONDITIONING & HEAT PUMP SYSTEMS - heat pumps and air conditioners
• BOILERS, HEATING - hot water or 'hydronic' heating systems
• CONDENSING BOILERS/FURNACES- high efficiency hot water heating boilers
• ELECTRIC HEAT - electric baseboards, furances, convectors
• FURNACES, HEATING - forced or gravity warm air heating systems
• STEAM HEATING BOILERS- steam heating systems

We also discuss various heating appliance fuel types (coal, oil, gas) as an aid in determining the age of a home or other building.

Antique Gas-Fired Floor & Wall Heater

Reader Question: Royal Heater in-floor gas fired heater history

I just bought a home in California. It has a dual sided, vent less, gas floor heater.

[Click to enlarge any image]

The only name I see is ' Royal Heater'. there are 2 valves; one for burner, one for pilot.

You need a key to turn them. On top of the unit is a view finder cap. Inside it looks like a 3 burner pilot

. I have attached photos of it. I'm trying to find any information on it. thank you.

[This particular heater] works beautifully and has been inspected. I want to find a operator's manual so I can maintain it.
- G.L., 16 Jan 2015

Reply: history of Royal Metal Works gas fired floor heaters in California

G.L.

The Royal brand in-floor gas heaters were originally designed in California in the late 1920's - we have a patent (Publication No. US1666367 A) by Louis Clausing (Burlingame CA) assigned to the Royal Metal Works (his own company held in partnership with Max Schwartz describing an earlier version of the product dated 1928: 'Heating device.' U.S. Patent 1,666,367, issued April 17, 1928.

Your photos below illustrate the interals of this floor-wall gas heater.

That that company was Royal Metal Works, 238 Van Ness Ave, in San Francisco, CA. That patent was cited by other product patents between 1943 and 1982.

Below at left your photo shows the gas controls including main valve (left) and pilot valvce (right-hand stem). At below right you've shown the pilot flame (I think).

The company filed just three patents, two for heaters and one for metal bending:

• Publication No. US1666367 A - heater 1928 (filed 1923) [PDF]
• Publication No. US1700559 A - heater 1929 (filed 1923)

and

• Publication No. US1808019 A - an interesting method for bending corrugated metal - 1931 (filed 1929) and perhaps involved in the manufacture of the heaters in the earlier patents.

Click to enlarge any image]

There is presently a [different] California Royal Metal Company (in fact several of them)
who might be able to give you more historical data, is a sheet metal fabricator whose business was established in 1981 but who may have known of the older Royal Metal Works who made your heater:

Royal Metal, Ted Rieck Enterprises Inc, 1228 South Wright St., Santa Ana, CA 92705 USA Phone: (714) 542-4763 Web: Royalmetal.com

Unless you object, I'll add your photos to data we have at InspectApedia and will leave you anonymous (our default) unless you let me know that you want to be identified. That may attract comment from other readers who have similar products.

I'll attach the documents of interest to this article.

Watch out: I would not assume that the heater you have is safe to use without both a thorough visual inspection and testing for gas leaks as burning LP or natural gas in a defective appliance can produce fatal carbon monoxide gas.

Frigidaire Serial Number Nomenclature Number

I would suspect that your device may also lack safety features of modern gas heaters. If you are going to ignore my timid warnings then at least be sure you have working CO and smoke detectors properly located and installed.

Other antique wall heating convectors are shown at WALL CONVECTORS HVAC

Heating Equipment Data Tag Location & Identification

This discussion explains where to find the data tag on air heating equipment.

To see specific details for your heater (boiler, furnace, heat pump, etc) you will need to know the brand and hopefully the model, then see
AIR CONDITIONER BOILER FURNACE AGE, MANUALS & PARTS GUIDES - HVAC

Heating equipment data tags are usually found on the exterior of the heater, usually on its top, front, or sides.

On occasion you may find the data tag information inside of the heating device, accessed by opening a removable front cover.

Often by removing the front cover of a forced warm air furnace, the equipment data tag is found inside the furnace jacket on the left, right, or directly on the exposed face of the furnace itself.

In our first photo shows gas fired heating boiler located in a garage.

The yellow arrow points to the common location of the equipment data tag on the upper left side of a Weil McLain heating boiler. [Click to enlarge any image]

Our second photo above shows the common location for the equipment data tag (circled in yellow) on a Peerless cast iron boiler.

On this page we illustrate typical equipment data tags on heating boilers and furances.

Our first photo below shows the data tag for a Smith Cast Iron Boiler.

You will find the model number identified on this heater as SERIES 19A SERIES-S/W-5, and SERIAL NUMBER FA2002-533.

Our second photo below shows the data tag on the exterior of an HB Smith heating boiler, Model BB14-*-4, (the * indicates that this is a steam boiler), though in my over-shot photo the serial number is not quite visible.

Furnace Data Tags Often Are Behind An Access Cover

Some gas furnaces sport a data information tag on the furnace interior left or right side, visible only after removing the front cover.

Below is the data tag for a rusty old Holland gas furnace, visible on the front of the furnace above the gas burner tubes, accessible only when the furnace front cover door has been removed.

Other Information Tags Are Not Equipment Data Tags

Watch out: not all of the information labels, tags, stickers seen on and in heating appliances are data tags. Don't get confused and don't think that because you cannot find the model and serial number on a label that the equipment has no data tag.

Frigidaire Serial Number Nomenclature Code

Look further on the outside and inside of the device. A true 'data tag' includes brand, model name, and serial number, often along with other information.

Other labels on heating equipment may give warnings or usage instructions, like the label I show below. This sticker gives model and oil burner nozzle guide information for System 2000 boilers by Energy Kinetcs - a boiler I installed in a New York home nearly 20 years ago) but this is not the unit's data tag.

Taking a further look around this same System 2000 Energy Kinetics boiler we spot the actual boiler 'data tag' giving its model and serial number on a smaller sticker that I show below.

Also see DATA TAGS on AIR CONDITIONERS

Age of the Boiler or Furnace as an Indicator of Building Age

Example of How to sort out shared names such as Flamemaster & Climate Master

If the heating equipment in your building is original - which may be determined by visual inspection, by knowing the building age, or knowing the heating system age, then each of these can inform us about the probable age of the other.

For example, an original Flamemaster (or Climatemaster) gas fired heating furnace is probably 40 or more years old even if you cannot find the date code in the furnace serial number.

Watch out: Names and who is using them can change over time: for example the name 'Flamemaster' appears on other products such as sealants, coatings and packaging produced by Flamemaster in Pacoima California, US - not a heting equipment manufacturer.

The product line Flamemaster gas furnaces shared product designs with ClimateMater. ClimateMaster continues in business (in 2015) as a manufactuer of geothermal heat pump systems.

• Bow Valley Resource Services, Ltd., Flame Master Gas Furnaces, (previously a 1960's company named Hi-Tower) a Canadian firm in Calgary, Alberta, also previously filed for activcity in the U.S. in California, no longer active.
  This company may have also produced model 394 & 396 Natural-Draft Flame-Master gas furnaces and gas furnaces sold under the brands of Bryant, Day & Night, and Payne Furnace brands. Estimated cessation 1986.
  See FLAME-MASTER FURNACES
• Climate Master Geothermal Heating & Cooling, 7300 S.W. 44th Street Oklahoma City, OK 73179 405-745-6000, USA, Website: http://www.climatemaster.com/
• Flamemaster Coatings, Flamemaster 13576 Desmond Street Pacoima, CA 91331-2315 Office Hours: Mon – Fri: 8:30a to 5:00p PST Tel: 818-890-1401 – Fax: 818-890-6001 USA, website: http://flamemaster.com/http://www.climatemaster.com/
• Pyrotec, TUV Nord Systems GmbH & Co. KG, in Germany produces a Flamemater propane flame projector - looks terrifying.
• Other Flame Master products include Keating's low temperature griddle.

...

Continue reading at MANUALS & PARTS GUIDES - HVAC - sources of more information including heating & air conditioning equipment age, history, manuals & manufacturer contact information, or select a topic from closely-related articles below, or see our complete INDEX to RELATED ARTICLES below.

Frigidaire Serial Number Nomenclature Lookup

Or see AGE of HEATER BOILER FURNACE FAQs - questions and answers posted origionally on this page.

HOME CONSTRUCTION CATALOGS 1950 - catalogs including heating equipment from the 1950s

Or see these

Frigidaire Dishwasher Serial Number Decoder

Articles on Building Component Age

• FURNACE AGE DECODING CHART - PDF
• LENNOX HVAC products Age PDF
• WATER HEATER AGE & MANUALS - tables & books decoding all brands.
• WATER HEATER AGE DETERMINATION CHART - PDF

Suggested citation for this web page

AGE of HEATERS, BOILERS, FURNACES at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

INDEX to RELATED ARTICLES: ARTICLE INDEX to HEATING SYSTEMS

Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia

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Technical Reviewers & References

• Mark Cramer Inspection Services Mark Cramer, Tampa Florida, Mr. Cramer is a past president of ASHI, the American Society of Home Inspectors and is a Florida home inspector and home inspection educator. Mr. Cramer serves on the ASHI Home Inspection Standards. Contact Mark Cramer at: 727-595-4211 mark@BestTampaInspector.com
• John Cranor is an ASHI member and a home inspector (The House Whisperer) is located in Glen Allen, VA 23060. He is also a contributor to InspectApedia.com in several technical areas such as plumbing and appliances (dryer vents). Contact Mr. Cranor at 804-747-7747 or by Email: johncranor@verizon.net
• [3] 'Residential Electric Water Heater Installation Instructions and Use & Care Guide', American Water Heater Co., October 2001, American Water Heater Co., Johnson City, TN, [manufacturer of residential & commercial water heaters, also manufacturer of Polaris/Commercial water heaters], Tel: 800-999-9515, web search 1/12/2012, original source: americanwaterheater.com/support/manuals/res-elect.pdf [copy on file]
• Lennox Heater & Air Conditioner Model & Serial Number Decoding Guide (local copy) - original source, Lennoxat http://www.lennox.com/pdfs/Lennox%20Model%20and%20Serial%20Nomenclature.pdf
• Peerless Boilers - the company doesn't want you to call or send direct email - you'll need to use their website to fill in a form or contact your local HVAC dealer. Here is the Peerless Current Boiler Products Literature Download page where installation and operation manuals are provided.
  http://www.peerlessboilers.com/Resources/Literature/TechnicalInformation/IOMManuals/tabid/86/Default
• Scott C. LeMarr has provided his file of keys to decode Furnace and Water Heater Age from the data provided on the manufacturer's equipment labels. Mr. LeMarr is a professional home inspector, Certified Professional Inspector/President, MASTER Indoor Environmental Specialist (MIES). Vice President of Wisconsin NACHI. He and his company, Honest Home Inspections, LLC. can be reached at 262-424-5587 or by email to scott@honesthomeinspections.com
• Fuel Oil & Oil Heating Magazine, 3621 Hill Rd., Parsippany, NJ 07054, 973-331-9545
• Goodman Furnace High Temperature Plastic Vent HTPV safety recall US CPSC notice
• Home Heating System Should Be Checked[for proper venting and for CO Carbon Monoxide Hazards - DJF]
• Domestic and Commercial Oil Burners, Charles H. Burkhardt, McGraw Hill Book Company, New York 3rd Ed 1969.
• National Fuel Gas Code (Z223.1) $16.00 and National Fuel Gas Code Handbook (Z223.2) $47.00 American Gas Association (A.G.A.), 1515 Wilson Boulevard, Arlington, VA 22209 also available from National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. Fundamentals of Gas Appliance Venting and Ventilation, 1985, American Gas Association Laboratories, Engineering Services Department. American Gas Association, 1515 Wilson Boulevard, Arlington, VA 22209. Catalog #XHO585. Reprinted 1989.
• The Steam Book, 1984, Training and Education Department, Fluid Handling Division, ITT [probably out of print, possibly available from several home inspection supply companies] Fuel Oil and Oil Heat Magazine, October 1990, offers an update,
• Principles of Steam Heating, $13.25 includes postage. Fuel oil & Oil Heat Magazine, 389 Passaic Ave., Fairfield, NJ 07004.
• The Lost Art of Steam Heating, Dan Holohan, 516-579-3046 FAX
• Principles of Steam Heating, Dan Holohan, technical editor of Fuel Oil and Oil Heat magazine, 389 Passaic Ave., Fairfield, NJ 07004 ($12.+1.25 postage/handling).
• 'Residential Steam Heating Systems', Instructional Technologies Institute, Inc., 145 'D' Grassy Plain St., Bethel, CT 06801 800/227-1663 [home inspection training material] 1987
• 'Residential Hydronic (circulating hot water) Heating Systems', Instructional Technologies Institute, Inc., 145 'D' Grassy Plain St., Bethel, CT 06801 800/227-1663 [home inspection training material] 1987
• 'Warm Air Heating Systems'. Instructional Technologies Institute, Inc., 145 'D' Grassy Plain St., Bethel, CT 06801 800/227-1663 [home inspection training material] 1987
• Heating, Ventilating, and Air Conditioning Volume I, Heating Fundamentals,
• Boilers, Boiler Conversions, James E. Brumbaugh, ISBN 0-672-23389-4 (v. 1) Volume II, Oil, Gas, and Coal Burners, Controls, Ducts, Piping, Valves, James E. Brumbaugh, ISBN 0-672-23390-7 (v. 2) Volume III, Radiant Heating, Water Heaters, Ventilation, Air Conditioning, Heat Pumps, Air Cleaners, James E. Brumbaugh, ISBN 0-672-23383-5 (v. 3) or ISBN 0-672-23380-0 (set) Special Sales Director, Macmillan Publishing Co., 866 Third Ave., New York, NY 10022. Macmillan Publishing Co., NY
• Installation Guide for Residential Hydronic Heating Systems
• Installation Guide #200, The Hydronics Institute, 35 Russo Place, Berkeley Heights, NJ 07922
• The ABC's of Retention Head Oil Burners, National Association of Oil Heat Service Managers, TM 115, National Old Timers' Association of the Energy Industry, PO Box 168, Mineola, NY 11501. (Excellent tips on spotting problems on oil-fired heating equipment. Booklet.)

Books & Articles on Building & Environmental Inspection, Testing, Diagnosis, & Repair

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As a rule-of-thumb, capacity information is encoded by air conditioning manufactures in the model number and date of manufacture info in the serial number.There are 12,000 Btus per ton of cooling, and air conditioners are sized by every ½ ton. Manufacturers often encode the approximate rating in Btus somewhere in the model number. Therefore it is often simple to scan the model number for a two-digit number that is divisible by 6 and to divide it by 12 to determine the capacity rating in tons. This number can be elusive, as it is not always exactly divisible by 6. Some manufacturer’s systems make this easier than others. To complicate matters, some manufacturers have changed their systems of encoding data over time.
Amana:
Age:
Use B-L-A-C-K H-O-R-S-E code
B = 71 or 81
L = 72 or 82
A = 73 or 83
C = 74 or 84
K = 75 or 85
H = 76 or 86
O = 77 or 87
R = 78 or 88
S = 69, 79 or 89
E = 70, 80 or 90
________________________________________________________________________
Bryant:
Capacity: Look for those elusive two digits in the model number usually (but not always) divisible by 6 and divide by 12 to convert to tons.
Example: 56BAB0042000A0
42 = size on thousands of BTU
42,000 Btu = 3½ ton
From 1964 through 1979 Bryant encoded age information in the serial number with the first two digits indicating week of manufacture and the letter following those first two numbers indicating the year beginning R = 1964:
R = 1964
S = 1965
T = 1966
U = 1967
V = 1968
W = 1969
X = 1970
Y = 1971
A = 1972
B = 1973
C = 1974
D = 1975
E = 1976
F = 1977
G = 1978
H = 1979
In subsequent years Bryant simplified its system where, the first two digits of serial number = Week of manufacture.
Third & fourth digits = Year of manufacture.
Example: 3188XXXXXX = 31st week of 1988.
Carrier:
Carrier has used several different codes at different plants. Information below refers to commonly used codes.
Capacity: Commonly found in the last three to five digits of model number, sometimes in 100s of Btus – sometimes in tons
Example:
001 = 1.5 ton, 002 = 2 ton, 003 = 2.5 ton, 004 = 3 ton, 004-5 = 3.5 ton,
005 = 4 ton, 006 = 5 ton
Or
18xx = 1.5 ton, 24xx = 2 ton, 30xx = 2.5 ton, 36xx = 3 ton, 42xx = 3.5 ton,
48xx = 4 ton, 60xx = 5 ton
Or
14xx = 1 ton, 18xx = 1.5 ton, 024 = 2 ton, 030 = 2.5 ton, 036 = 3 ton,
042 = 3.5 ton, 048 = 4 ton, 060 = 5 ton
Age: Through the 1960s Carrier used the first digit of the serial number to indicate the year of manufacture. Example: 3xxxxx = 1963, 4xxxxx = 1964, 5xxxxx = 1965, etc.
Beginning in 1970 Carrier began to use a letter followed by a single digit year.
Example: A1 = January 1971, B2 = February 1972,
M5 = December 1975
Note: No letter I
A=Jan
B=Feb
C=Mar
D=Apr
E=May
F= Jun
G= Jul
H=Aug
J=Sept
K=Oct
L=Nov
M=Dec
More recently Carrier has simplified things using the first four digits of the serial number to signify the age, where the first two digits indicate the week and the third and fourth digits indicate the year of manufacture (similar to Bryant).
Example: 3298xxxxxx = 32nd week of 1998
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Chrysler Air Temp:
Capacity: Rating in tons found in the fourth and fifth digits of the model number
0 = 1 –1.5 ton
2 = 2 ton
3 = 2.5 ton
4 = 3 ton
5 = 4 ton
6 = 5 ton
Example: xx06xxxx = 5 ton
Climatrol:
Capacity: Look for those elusive two digits in the model number (usually, but not always) divisible by 6 and divide by 12 to convert to tons. It is often in the last three to five digits, but is sometimes closer to the middle.
________________________________________________________________________
Coastline:
Capacity: Look for those elusive two digits in the model number (usually, but not always) divisible by 6 and divide by 12 to convert to tons. It is often in the last three to five digits, but is sometimes closer to the middle.
________________________________________________________________________
Coleman:
Coleman has used several different codes at different plants. Information below refers to some commonly used codes.
Capacity: Commonly found in the third and fourth digits of the model number – sometimes in 100s of Btus and sometimes as tons.
Example: xx30 = 2.5 ton, xx48 = 4 ton
or
xx02 = 2 ton, xx05 = 5 ton
________________________________________________________________________
Day-Night – Later manufactured as “BDP” (Bryant, Day-Night, Payne):
Capacity: Look for those elusive two digits in the model number (usually, but not always) divisible by 6 and divide by 12 to convert to tons. It is often in the last three to five digits, but is sometimes closer to the middle.
Age: First two letters of the serial number indicate age, where the first letter is the month and the second letter the year of manufacture beginning with 1970
A=1970
B=1971
C=1972
Etc.
Fedders:
Capacity: Last two digits of the model number indicate 1000s of Btus
Example: CF30 = 2.5 ton
Age (through 1977): Last two letters of serial number indicate month & year beginning with September 1966
Note: I not used
A=Sept
B=Oct
C=Nov
Etc.
A= 1966
B=1967
C=1968
Etc.
Example: xxxxAA = September 1966, xxxxBC = October 1968
________________________________________________________________________
General Electric:
Capacity: Last three digits of model number indicate approximate rating in 1000s of Btus
Example: 21TC030A = 2.5 ton
Age: Last three digits of serial number indicate date of manufacture, where the first digit indicates the year and the second and third indicate the week
Example: xxxxxx241 = 41st week of 1982
________________________________________________________________________
Lennox:
Capacity: Lennox has its own code found between hyphens in the model number
211=1.5 ton
261=2 ton
311=2.5 ton
411=3 ton
461=3.5 ton
511=4 ton
651=4.5 ton
Example: CHP16H-261-1P = 2 ton
Age: Prior to 1974 the first three digits of the serial number indicate the date of manufacture where the first two digits indicate the year and the third is the month.
Example: 732xxxx = February 1973
Beginning in 1974 the third and fourth digits indicate the year followed by a letter indicating the month.
Note: I not used
A=Jan
B=Feb
C=Mar
Etc.
________________________________________________________________________
Rheem or Ruud:
Capacity: Look for those elusive two digits in the model number (usually, but not always) divisible by 6 and divide by 12 to convert to tons.
Example: RPGC-037JA = 3 ton
Age: Four digits of serial number indicate date of manufacture where first two indicate the week and the third and fourth are the year. In the 1960s and early ‘70s this was the last four digits. More recently date of manufacture information is found closer to the middle of the serial number.
Example: xxxx1872 = 18th week of 1972
________________________________________________________________________
Tappan:
Capacity: Look for those elusive two digits in the model number (usually, but not always) divisible by 6 and divide by 12 to convert to tons.
Example: CM36-11B,T = 3 ton
________________________________________________________________________
Trane:
Capacity: Trane has used a number of different methods for encoding capacity information in the model number. It is commonly found in the first three digits – sometimes and Btus, sometimes as tons.
Example: SPCC-B504-A = 5.0 ton,
Or
TWS748A = 48,000 Btu = 4 ton
Age: Through the seventies date of manufacture information is found as a number and a letter in the serial number where the number is the single digit year and the letter indicates the month.
A=Jan
B=Feb
C=Mar
Etc.
Example: 1C-xxxx = March 1971
In the early ‘80s Trane began to stamp the date of manufacture in the lower right hand corner of the data plate.
________________________________________________________________________
Whirlpool:
Capacity: Look for those elusive two digits (often the first two digits) in the model number (sometimes, but not always) divisible by 6. Divide by 12 to convert to tons.
Age: Date of manufacture information is encoded in the serial number where a letter indicates the decade and the third and fourth digits indicate the week.
G=1970s
H=1980s
Example: H43571485 = 35th week of 1984