# Age of Comfortmaker furnace

**URL:** <https://forum.nachi.org/t/age-of-comfortmaker-furnace/55218>\
**Category:** Inspecting HVAC Systems\
**Created:** [December 28, 2010, 1:43pm UTC](https://forum.nachi.org/t/age-of-comfortmaker-furnace/55218 "2010-12-28T13:43:02Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![chiatt](https://avatars.discourse-cdn.com/v4/letter/c/a9a28c/32.png) [@chiatt](https://forum.nachi.org/u/chiatt)\
**Post date:** [December 28, 2010, 1:43pm UTC](https://forum.nachi.org/t/age-of-comfortmaker-furnace/55218/1 "2010-12-28T13:43:02Z")

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Need help with age of Comfortmaker furnace Serial # L973058323 NTG9050FFA2

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**Author:** ![lkage](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/lkage/32/347658_2.png) [@lkage](https://forum.nachi.org/u/lkage)\
**Post date:** [December 28, 2010, 1:46pm UTC](https://forum.nachi.org/t/age-of-comfortmaker-furnace/55218/2 "2010-12-28T13:46:13Z")

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> [@chiatt](#):
>
> Need help with age of Comfortmaker furnace Serial # L973058323 NTG9050FFA2

1997

**Comfortmaker** (International Comfort): A letter followed by a 9-digit number. The  
second and third letter represent the year, the fourth and fifth numbers represent the week. There may be a date stamp to the right of the serial number.  
Sample  
Serial Number: R883512345 Date of Mfg: 09/88

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**Author:** ![chiatt](https://avatars.discourse-cdn.com/v4/letter/c/a9a28c/32.png) [@chiatt](https://forum.nachi.org/u/chiatt)\
**Post date:** [December 28, 2010, 1:52pm UTC](https://forum.nachi.org/t/age-of-comfortmaker-furnace/55218/3 "2010-12-28T13:52:29Z")

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Thanks so much Larry. I thought that was it but unit looked newer, so I questioned. Appreciate prompt response

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**Author:** ![jsecord](https://avatars.discourse-cdn.com/v4/letter/j/f08c70/32.png) [@jsecord](https://forum.nachi.org/u/jsecord)\
**Post date:** [December 28, 2010, 1:58pm UTC](https://forum.nachi.org/t/age-of-comfortmaker-furnace/55218/4 "2010-12-28T13:58:36Z")

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As Larry said correctly, the 30th week of 1997. Couple of good web sites for dating HVAC and HW heaters.

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**Author:** ![chiatt](https://avatars.discourse-cdn.com/v4/letter/c/a9a28c/32.png) [@chiatt](https://forum.nachi.org/u/chiatt)\
**Post date:** [December 28, 2010, 4:03pm UTC](https://forum.nachi.org/t/age-of-comfortmaker-furnace/55218/5 "2010-12-28T16:03:51Z")

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Hey Jeffrey, welcome. Thanks for your response, but I didn’t see where you listed the actual web sites. I found a couple, but didn’t find anywith this brand.

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**Author:** ![jsecord](https://avatars.discourse-cdn.com/v4/letter/j/f08c70/32.png) [@jsecord](https://forum.nachi.org/u/jsecord)\
**Post date:** [December 28, 2010, 5:03pm UTC](https://forum.nachi.org/t/age-of-comfortmaker-furnace/55218/6 "2010-12-28T17:03:37Z")

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HI, and thanks for welcome. Try [www.hisearch.web.officelive.com](http://www.hisearch.web.officelive.com). ON the left you will see pull down menu for hvac equiptment and also hw heaters.

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**Author:** ![chiatt](https://avatars.discourse-cdn.com/v4/letter/c/a9a28c/32.png) [@chiatt](https://forum.nachi.org/u/chiatt)\
**Post date:** [December 28, 2010, 5:24pm UTC](https://forum.nachi.org/t/age-of-comfortmaker-furnace/55218/7 "2010-12-28T17:24:32Z")

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Thanks so much.