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Kittyangel 10-14-2010 10:45 AM

Gas Furnace/Air Conditioner
we replaced the furnace and put in central air 4 yrs ago when we purchased this house. We are putting a addition on our house and we are wondering if we need to upgrade the furnace and air?

Our furnace is 90plus high efficiency furnace 75,000 and the air is a 2.5 ton?

yerry 10-14-2010 12:33 PM

I have a comfortmaker 90 about 10 years old red light blinks 4 times fan come but does not light help please

SKIP4661 10-14-2010 12:45 PM

You would get more responses by posting this in the HVAC section.:thumbsup:

fabrk8r 10-14-2010 12:57 PM

Kittyangel, the only way to know if your system has enough capacity to heat and cool your addition is to have you or someone else do a heat load calculation on your home. Anything else would be a wild guess and you and your family probably wouldn't be comfortable.

yerry, look at the inside of the access door on your unit. There should be a chart in the wiring diagram that tell your what the trouble codes are.

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