How old is my Intertherm unit?
Intertherm is part of Nortek Global HVAC (NGH). 3 serial formats sourced across central air conditioner, heat pump, furnace.
Serial number decoder for Intertherm
Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.
Format example: GBB030708229
- Intertherm air conditioner serial numbers in the era not stated format encode the year as digits 4-5 of the serial, i.e. the first two numerals after the 3-letter prefix (03 = 2003) and the month as digits 6-7 (07 = July) (source: building-center.org).
- Example: serial GBB030708229 decodes to July 2003.
- Intertherm air conditioner serial numbers in the era not stated format encode the year as digits 3-4 after the middle factory letter (91 = 1991) and the week as digits 1-2 after the middle factory letter (38) (source: building-center.org).
- Example: serial MN3D102 F3891 4228 decodes to week 38 of 1991.
- Intertherm air conditioner serial numbers in the era not stated format encode the year as digits 4-5 (99 = 1999) and the month as digits 6-7 (05 = May) (source: building-center.org).
- Example: serial G6R9905-05028 decodes to May 1999.
- Intertherm's official lookup at intertherm.com returns warranty / registration lookup.
Decoder pages by product
Format eras
- era not stated VERIFIED
AAA#########Furnace, Central Air Conditioner, Heat Pump - era not stated VERIFIED
AA#A### A#### ####Furnace, Central Air Conditioner, Heat Pump - era not stated VERIFIED
A#A####-#####Furnace, Central Air Conditioner, Heat Pump
Official lookup: the authority
Open the official Intertherm lookup takes serial number; returns warranty / registration lookup; URL verified live
This site is a reference built from published tables. The manufacturer's own lookup wins whenever the two disagree.
What we could not confirm
- Styles: FGA030310579 (root style 1) and G6R9905-05028 (family style 3). intertherm.com curl 200 but JS-rendered (no text); it is a brand site, not a serial lookup. Water-heater page https://www.building-center.org/intertherm-water-heater-age/ not fetched.
Sources
- https://www.building-center.org/nordyne-hvac-age/
- img: Nordyne-style-1-2023.jpg (transcribed)
- https://www.building-center.org/intertherm-hvac-age/
- https://www.building-center.org/gibson-hvac-age/
- https://www.building-center.org/broan-hvac-age/
- img: Nordyne-style-2-2023.jpg (transcribed)
- https://www.building-center.org/tappan-hvac-age/
- https://www.building-center.org/westinghouse-hvac-age/
- https://www.building-center.org/miller-hvac-age/
- https://www.building-center.org/kelvinator-hvac-age/
- https://www.building-center.org/maytag-hvac-age/
- https://www.intertherm.com/official