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Inspecting HVAC Systems Topics include heating, venting, and air conditioning inspections.

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  #1  
Old 9/19/09, 5:23 PM
Mitch A. Harris Mitch A. Harris is offline
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Default Age Help Please

I believe these units are about 35 years old but can not confirm.
Electric Furnace Heat Wave S/N LO40423 Model # E1B35-23 who built Heat Wave?

AC is GE S/N 219370927
Any help would be greatly appreciated.



[]Mitch Harris
Harris Home Inspections
mitch@harrishomeinspections.com
Your Central Kansas Pro-Sight affiliate
www.prosightinspections.com/HHI
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  #2  
Old 9/19/09, 5:32 PM
Wayne B. Wilson's Avatar
Wayne B. Wilson Wayne B. Wilson is offline
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Default Re: Age Help Please

General Electric: Age is the last 3 digits of the serial number. First digit being the year
and the second and third digits being the month. Example xxxxx241 = 41st week of 1982,
92, 02 etc., xxxxx533 = 33rd week of 1985, 95, 05 etc..
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  #3  
Old 9/19/09, 5:32 PM
Wayne B. Wilson's Avatar
Wayne B. Wilson Wayne B. Wilson is offline
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Default Re: Age Help Please

i would say 1989
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  #4  
Old 9/19/09, 5:53 PM
Jae Williams Jae Williams is offline
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Default Re: Age Help Please

My records say:

GENERAL ELECTRIC [HEAT WAVE Furnaces] “S” = 1980 (go up or down from that)
Before 1975…last three numbers- […247 = 47th week of '62, '72, '82 etc…]

"L" is eight numbers down from 1980...making the date around 1972, which would be close to your guess of 35 years old.

But before '75 it was the last 3 numbers, in this case 423. How does March of 1923 strike you? I'd go with the 1975 possibilty if you think they're 35 years old.



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Last edited by jwilliams4; 9/19/09 at 5:56 PM..
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  #5  
Old 9/19/09, 6:40 PM
Mitch A. Harris Mitch A. Harris is offline
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Default Re: Age Help Please

Thanks Wayne, and Jae.



[]Mitch Harris
Harris Home Inspections
mitch@harrishomeinspections.com
Your Central Kansas Pro-Sight affiliate
www.prosightinspections.com/HHI
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