- Joined
- Apr 4, 2016
- Messages
- 855
A one ton (12KBTU) unit will work for your 900 sq. ft. shop provided it is well insulated and you don't live in a region with extremely high summer temperatures. 18KBTU would be my preference. Assuming this is a heat pump, the -10 deg F performance will be marginal. Will it provide some heat at -10 deg ? Sure, it's just physics, but it won't be a lot.Bob, the unit being quoted are good for as low as -10 degrees F.......which where I live is plenty good enough.
Ted
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