My HVAC contractor is soon to install a Bryant/Climatemaster Geothermal heat pump. He says I can go with either a 5 or 6 ton size because I'm between sizing.
Calculated Heating load = 59,500 BTU
Calculated Cooling Load = 42,500 BTU
According to the attached chart I could use a 6 ton for the heating load, but only need a 4 ton for cooling. I called Climatemaster and was told that for good heating I should go w/ the 6 ton, but that in the summer the unit would short cycle and cause higher humidity. I was thinking of compromising and doing a 5 ton but don't want to be under sized and kick on the electric back-up strips. Our cold & hot months are about equal here in Southern Idaho.