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Life expectancy of an Intertherm water heater: this article describes how to read the data tag and de-code its numbers to determine the age of an Intertherm water heater. We show typical water heater data tag model and serial number formats and note where in that information the year or week or month and year are encoded.
How to De-Code the Data Tag on an Inter-Therm Water Heater - Age Determination
Intertherm Water Heater Age Decoding Guide
Query: Hi, can you tell me the date an Intertherm water heater was made?
Model #IHMS960E4 - Serial #K07433029
Reply: best guess 1974
From the serial number, look at the first four digits of the serial number KO 74 - where the format is MM YY for the production month and year. Most likely this unit was made in 1974.
Another example, using Inter therm model #HE40-240SH and the Serial # 078318181 we would decode the date of manufacture as MM YY in the first four digits or July 1983.
A third Intertherm water heater decoding example using digits 3-4 as production month and digits 5-6 as production year we would decode Serial # AB039912345 as having been produced in March 1999.
Also see Rheem water heater de-coding data.
Intertherm currently produces air conditioners, heat pumps, and packaged systems that provide combined heating and cooling.
For Intertherm compatible water heater parts, installation instructions, and new equipment see Rheem equipment or see Arco Refrigeration or Arco Distributing
101 Arco Drive
Saint Charles, MO 63303, Tel: 800.438.2720, Website: http://www.arcodistributing.com
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Scott C. LeMarr has provided his file of keys to decode 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
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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 ($69.00 U.S.). Technical Reference Guide, Carson Dunlop Weldon & Associates, Ltd., 120 Carlton St. Suite 407, Toronto, Ontario, M5A 4K2 Canada, ISBN 1-895585-90-2 165pp.
G.E. Water Heater warranties and other water heater information can be found online at geappliances.com
Lochnivar or some vendors of Lochnivar water heaters provide an online copy of its water heater warranty (01/26/2009)
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