GT Heating--Do I need to insist on a schedule J Calc.?
I talked to a GT heating sales guy today, and when I spoke with him, he said he could size a unit for my home with just some climate data (which he has), and the natural gas therm usage for the past year.
Does this sound right? Is this typical? Is this the typical, ballpark way to size a unit for a bid, and if so, should I expect and demand that a schedule J be completed before I sign off on the bid, as a part of the system design?
Dan in Mpls