We have decided to buld an ICF home here in NE Ohio. approx 3600 sq feet.
I have become very obsessed in making the house very energy effecient and tight. ICF exterior walls, R-49 blown cellulose attic over living space, proper seealing windows/doors etc...
I need some information on the HVAC part. The contractor recommends a 95% efficient 2 stage Goodman variable speed propane furnace (70,000 BTU), a 3 1/2 ton (13 SEER) Add on Heat pump, digital thermostat, media typs air cleaner and a New Aire Air to air heat exchanger. Normal .35 air change per hour is reduced to approx .06 with ICF and sealant package-from the builder.
1. I have read many of other posts pros/cons of many units/brands...however I am wondering for my situation -is a Goodman a good fit? Also should the 13 SEER be increased to a 16 SEER ? (one recommendation of an energy advisor) This is assuming a very tight and dry house.
2. I do not have propane or gas. So with the efficient furnace, do you think all electric would be close to cost of gas? I am not sure of cost of KW .08 or .09?
2. I have also talked with a dozen Energy Advisors over the last month. I am interested in two of them. They specialize in making an efficient home and will give a great deal of advice on what to do in the home. They will run the numbers comparing energy savings of standard stick home compared to the ICF insulated home. They will also do the door blower test, duct leakage etc 0nce the home is done. (of course all for a fee). Have any of you used the service of an advisor like this? Have you found it to be worth it? the price seems actually small for their potential advice, if taken by the builder.
One such example: Advisor recommended a Panasonic Whisper bathroom fan for all bathrooms. He said they are extremely quiet and pull a great deal of air/water from the bathrooms. He said these are far better than the standard contractor fans builders use. I know nothing about this unit. The cost is over 5 times a standard "buildes fan" would be. Can this really be worth this kind of cost, is a bath fan that important?