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Posted by ahimon on June 04, 2007 at 14:12:14:
I have a two family with an old oil fired hot water boiler that supplies water in 3" iron pipe to 3/4" pipe (in the walls) to radiators. I want to replace this unit with 2 units so the tentant can pay thier own heat. My haet loss calcs say 37,000 BTU/hr required to heat this whole house which is about 20'X 30'. Units are not insulated and are one over the other in a 100+ year old colonial. Both units have new 30 gal domestic hot water tanks. What type of systems would you install?