We're looking for a furnace replacement. A contractor came up with the
Lifebreath Clean Air Furnace which gets its heat from an existing hot
water tank. See http://www.lifebreath.com/pr_caf02.htm
Does anyone have experience with such a system? Does this system put
extra constraints on the watertank; max. temperature, burner capacity
etc? It can get really cold in Ottawa, ON, Canada. Would such a system
provide enough heat? We live in a moderate size townhouse (approx 135 m2).