90% Gas Furnace Installation in Unconditioned Attic
90% Gas Furnace Installation in Unconditioned Attic
(OP)
Can you install a 90% Gas Furnace in an unconditioned attic? We are a Mechanical Contractor and plan to install a 90% Gas Furnace in the attic for a Townhouse project. My questions are:
1. Freezing an issue? condensation from the furnace.
2. Would there will be a Gas Furnace performance issue?
3. What are our alternatives? 80% Gas Furnace? Install the 90% Gas Furnace in conditioned space? Ductless mini split?
Please advise. Thank you in advance.
1. Freezing an issue? condensation from the furnace.
2. Would there will be a Gas Furnace performance issue?
3. What are our alternatives? 80% Gas Furnace? Install the 90% Gas Furnace in conditioned space? Ductless mini split?
Please advise. Thank you in advance.





RE: 90% Gas Furnace Installation in Unconditioned Attic
RE: 90% Gas Furnace Installation in Unconditioned Attic
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: 90% Gas Furnace Installation in Unconditioned Attic
RE: 90% Gas Furnace Installation in Unconditioned Attic
knowledge is power
RE: 90% Gas Furnace Installation in Unconditioned Attic
RE: 90% Gas Furnace Installation in Unconditioned Attic
I agree with maintaining accessibility per comments above.
RE: 90% Gas Furnace Installation in Unconditioned Attic
RE: 90% Gas Furnace Installation in Unconditioned Attic
RE: 90% Gas Furnace Installation in Unconditioned Attic
I do not know about other manufacturers, but Carrier has some very specific recommendations for this type of installation.
B.E.
RE: 90% Gas Furnace Installation in Unconditioned Attic
RE: 90% Gas Furnace Installation in Unconditioned Attic
RE: 90% Gas Furnace Installation in Unconditioned Attic