service calculations

[augie47]

Can anyone recommend a site for a free or inexpesive service calculation program. Mike has one on hi site but it appears to address central heat and air (seperate) and not heat pumps where comprssors and heat operate at the same time. Suggestions ?

[Dennis Alwon]

Can anyone recommend a site for a free or inexpesive service calculation program. Mike has one on hi site but it appears to address central heat and air (seperate) and not heat pumps where comprssors and heat operate at the same time. Suggestions ?

Augie-- just use Mike's and put in the load for both units under the heat. Wouldn't that work???