Originally Posted by
JimmyP
Thanks for your imput.
There is no duct work in place yet. The house in new only 3 years old and well insulated so not much room for improvement there. Using HVAC Calc at 14F I get a heat loss of 23000. this x 25% in case of errors is 28700, I have a sensible heat load of 21300 .The 2.5 York has a sensible cooling load of 21000 - 23000. A 2.5 seems like the right choice. I was thinking of 3 ton 2 stage because I live in eastern canada and would need more heating than cooling even though the numbers are similar for loss and gain.
Jimmy