Good Duct Work Calculation Program

[flyrod52]

I have recently started installing geothermal units in new homes. These homes have four inches of stiafoam in the walls. I need a program that can calculate R factors of twenty five or better. The local power companies have been doing the heat loads for me but if anyone knows of a program that will do both I would love to take a look at it. Thanks, flyrod52

 

[gunnarhole]

I just bought HVAC-Calc and I like it. Take a look at

http://www.hvac.cc

 

[Goorah]

I use HVAC calc Commercial as well. It's quick and to the point and I feel that with the variabiles in HVAC design it is of sufficient accuracy to do most jobs on planet earth. Other programs take hours to input data and have a level of accuracy that simply isn't necessary. If you're pressed for time, this program does a sufficiently accurate job.