# Need help with condenser/date

**URL:** <https://forum.nachi.org/t/need-help-with-condenser-date/71917>\
**Category:** Inspecting HVAC Systems\
**Created:** [September 12, 2012, 7:13pm UTC](https://forum.nachi.org/t/need-help-with-condenser-date/71917 "2012-09-12T19:13:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![prussell](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/prussell/32/309158_2.png) [@prussell](https://forum.nachi.org/u/prussell)\
**Post date:** [September 12, 2012, 7:13pm UTC](https://forum.nachi.org/t/need-help-with-condenser-date/71917/1 "2012-09-12T19:13:40Z")

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Unitary Products Group, Norman OK

S/N WELM031393 & WELM031391

Charlie???

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**Author:** ![cbottger](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/cbottger/32/206_2.png) [@cbottger](https://forum.nachi.org/u/cbottger)\
**Post date:** [September 12, 2012, 7:51pm UTC](https://forum.nachi.org/t/need-help-with-condenser-date/71917/2 "2012-09-12T19:51:00Z")

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> [@prussell](#):
>
> Unitary Products Group, Norman OK
> 
> S/N W **EL** M031393 & WELM031391
> 
> Charlie???

May be out of the ball park but off the top of my head E= May L= 81 or 02

I am thinking Unitary is a York product

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**Author:** ![prussell](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/prussell/32/309158_2.png) [@prussell](https://forum.nachi.org/u/prussell)\
**Post date:** [September 12, 2012, 8:15pm UTC](https://forum.nachi.org/t/need-help-with-condenser-date/71917/3 "2012-09-12T20:15:47Z")

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Thanks Charlie, House was built in 1989  
Never saw one of these before and now I’ve seen two!!!  
No labels on the covers at all just on the serial tag.