well this is the first time in about 5 years i have seen snow on the lane over my pipes and the ground froze 250 of thawed ground in mid january had to be using a lot of btu's i am calculating by the wood pile so far that a savings of about 4 bush cords or more. that will work out to about 1 free year in every three or if i were to sell the 4 cords per year i save at (the going rate here) 200 bucks a bush cord x 4 that is 800 per year 4 years and my pipes are paid for
plus, if you are running your domestic water on your OWB you pretty much need it to run 24/7 if the water in your underground pipes has to travel 250 feet and it had cooled to say 100 degrees before any demand is called for, your domestic water will be luke warm for a few gallons before it is up to dishwashing temps. (those are my thoughts anyway) also talk to any pump guys, they will tell you what wears out a pump faster than anything else....starts! my taco 0011 is original equipment this is year 11, one start per year. On in October, off in June