Heat calculation

FrankR

Can anyone tell me how to size a new boiler for my house. I've had several radiation studies done with wildly different results. One study was done by counting all radiators (size number of tubes and sections) in the house and measuring the rooms and another one was done by mesuring rooms, doors and windows. I have a hot water oil fired  boiler and I am more confused now then ever.

Paul48

Try

Slant Fins heat loss calculator. You can do it yourself. Just put in the information. Try here http://www.pvsullivan.com/Downloads.html