With the help of Jeremy Marin, a neighbor and efficiency activist, I've got an appointment with an energy auditor a week from Friday. 

Jeremy is part of the Energy Smackdown, and he arranged with Next Step Living Inc. to offer a volume discount to his teammates, and then to other interested parties. 

They're sending two staffers for three hours, during which they will assess the house not only with the blower-door test, but with thermal imaging, and perhaps other tools as well. (The former pressurizes the house to measure the air flow against an objective standard, to see how much air is escaping unintendedly, through wall sockets, corner joints, etc. The latter looks at the house for temperature, rather than light; where the temperature on outside surfaces is higher, that's where heated inside air is escaping.)

In addition to diagnosing, the company will do the easiest fixes right on the spot, for the added costs of materials only. It will also provide a report that identifies all we could do to improve, in order of priority.

The fee for this will be $499, which I'm told reflects a volume discount. I didn't asked what it would have been otherwise. I concede that a smart shopper would have asked. My expectation is that we will pay back the investment in relatively short order, though perhaps we will need some costly work done before we can reap a substantial portion of the available efficiencies, which would push out the break-even point. Of course, we'll get the climate-emergency payback the minute the work is done.