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plan_r

Uh-oh -- pregnant wife, no AC, 90 degrees...

plan_r
15 years ago

Of course the AC goes out today with wife pregant & her family coming to visit next week. Current system is Goodman 4 ton AC (20 years old) and Heil 92% efficiency furnace (3-7 years old, not sure BTUs). House is in North Carolina, built in 1936 & not well insulated, bit over 3,000 sf. Insulation is obvious next project -- for now, since my wife is cooking up a new baby, just need to avoid cooking her at the same time. We're looking at a couple possibilities:

1. New AC only, 14-15 seer single-stage unit. (Furnace does not have variable speed, so can't do highest efficiency AC.)

2. New heat pump, using the existing furnace in a dual-fuel system. Again, single stage in the heat pump, 14-15 seer.

3. New heat pump & furnace -- maybe Bryant Hybrid Heat option. This lets us have higher-efficiency two-stage heat pump, like 17-18 seer, I think. Furnace maybe slightly higher efficiency, plus probably more comfortable with all the high-tech controls, etc. (Old furnace donated to Habitat for Humanity.)

Which makes sense? Heating bills last winter were between 300-400. No electric bill for full summer month yet (May was cooler), but not anticipating good things. Electric here is 7.5 cents/kwh, gas is 1.75/therm.The third option sounds great in terms of comfort & efficiency, but maybe doesn't justify upfront cost. (Getting estimates now.) Planning to be in house for a while, but don't want to throw money away either. THANK YOU for your advice & wisdom!

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