Source to guide me through sizing radiant floor & hot water boiler?
Does anybody have a source to help guide me through the calculations required to size a boiler for my basement radiant floor system?
It is going to be a combi boiler tankless water heater with a 50 gallon storage tank. Per my heat loss numbers I need 29,000 Btuh heat load plus whatever I need for my domestic hot water.
I’m really just trying to keep a check on the radiant contractor who I think is over sizing the boiler by a long way. He proposed a 135,000 Btuh unit – the LAARS Mascot FT model.
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