MechaniCalcs LLC. was formed to assist HVAC contractors and builders in their design needs.  After 11 years in the Florida HVAC business and seeing how essential proper sizing is we are equipped to help your company succeed.  If you are in need of Manual J / D / N ,Florida energy calculations, and on site duct design please contact me.  As a Florida Class 1 Rater and RESNET certified we can also certify your homes for national and state rebates.