I'm looking for a heat load calculator so I can size baseboard heaters for a couple of rooms. My brother and I bought a house with an incomplete remodel. it's and add-on to an A-frame. So we want to convert the space between the roof and the addition into a mudroom.
I'm an engineer so I enjoy the calculators that ask for a lot of detail on door and window sizes, insulation values, etc. Any suggestions appreciated. Would like a free one, though.