The house is performing wonderfully. The gas usage for November and December was 247 therms. The gas usage for last December alone was 248 therms. The family room, where we spend a lot of our leisure time, is much closer to the temperature of the dining room (where the thermostat is), so we can lower the thermostat and still be comfortable. The family room was also a lot less overheated during the summer. We've also noticed that our electricity use is lower than the solar panels alone can explain. I'm guessing that reduction may be related to how much power the blower fan draws. Bottom line - I'm really glad we had the work done. It wouldn't have been cost-effective without the state rebate, but the rebate certainly made it worth it.
The house is performing wonderfully