Hi - simple question..
Assuming I don't need the OFCH to heat the house or heat water, do I need to run the OFCH system?
(ie: can it be left off for weeks?).
What would happen if I don't?
Thanks
by Mr.Punch » Sat Oct 11, 2008 8:08 pm
by plumbbob » Sun Oct 12, 2008 6:06 pm