Lots of talk here about energy audits and reports lately. I had an audit done in March '13, and thought I would post my report (pdf below) for curious folks to check out. Over the summer, I had a company do a bunch of energy eff improvements, with a a tab of $6k. I also had all the aluminum 3-track storm windows in my house replaced with new 2-track low-e storm windows, for another $6k. The old storms were literally falling out, so I see the latter charge as a home maintenance cost, rather than an energy upgrade cost. My estimates, based on logged HVAC data, are that my heating and cooling are reduced by ~25-30%, or about $500/year. If I factor in reduced wear on my HP, I can argue that is worth $700/year. Ignoring the windows, this is ~9-10 year simple payback. It is poor because I have cheap electricity ($0.135/kWh), a high efficiency heating and AC system, and I had previously gotten a lot of low hanging fruit DIY. Given the long payback, I would not have done this out of pocket (due to opportunity cost). The state (PA) is offering the equivalent of a 0% 10yr loan for the whole $12k that made it appealing, so I pulled the trigger.