We're slowly emerging from the winter and I'm happy to report that I burned about 30-40 gallons of oil thanks to the addition of our PE insert and new Harman P43. Combined, they kept us cozy through the winter and surely saved us some $$. For the coldest parts of the winter, I kept my oil boiler on standby as a way to add a little heat into the basement and so I could circulate hot water through the baseboards occasionally, replacing the cold water with hot. This strategy successfully kept any pipes from freezing. However, my boiler is on its last legs and desperately needs to be removed completely (preferred action) or replaced (not preferred since I really do'n't need it). If I remove it, I won't have to worry about the baseboard pipes from freezing since they'll be drained. However, I am concerned that the domestic water pipes in the basement could be subject to freezing temps if I don't introduce at least at little bit of heat into the basement during the deep freezes. Even with the boiler on standby, the basement temps dropped to the high 30s. I've insulated all the pipes, put plastic over the basement windows and insulated the box sills with R30. I'm not aware of any drafts in the basement, but I'm sure there's a spot or two. Any suggestions on how to keep the basement at temp so as to keep pipes from freezing?