This has been the coldest week of the winter so far for D.C.-area residents, and not a bad time to think about how well your house holds in heat.
On Thursday Dominion Power crews sealed up drafty windows and door frames in three townhomes occupied by families transitioning away from homelessness in Reston, Va.
The changes will make for a warmer and cheaper winter, but design supervisor Bob Doniel also spent a few minutes fixing a broken window screen, something that could make a difference in the summer.
"We want them to be able to open their windows, and if the screens are in disrepair, they may not open up the windows, which would help with their cooling...in the summertime," Doniel says.
Dominion conservation specialist Alison Kaufmann says helping customers save energy makes sense for a company trying to meet energy demands.
"One way that we see how we can fill that energy gap and extra demand is by helping people conserve," she says.
Kaufmann says air-leaks can account for as much as 15 percent of a household energy bill.