Yet another part in making sure this house is ready for future energy costs will be the geothermal heating and cooling system. We are installing a 3 ton Florida Heat Pump system. With all the insulation in the house, we are able to under-size the HVAC by quite a bit. Our old house was about the same square footage and had a 5 ton standard heat pump unit. Our builders have told us several times our electric bills should not be over $100 a month for this house.
The house will be so air tight, we have to use a device called an HRV (heat recovery vent) to introduce controlled amounts of fresh air into the house. It does this by passing it through a heat/cold exchanger with the inside air being exhausted out. This transfers about 60% of the energy that would be lost to the incoming fresh air. The system will not try to suck air through windows and doors. The duct men from Total Comfort got most of the duct work in. The geothermal lines outside are where most of the labor costs come in.
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