What the heck are Manuel J Load calculations anyway?  A simple answer is it is a series of calculations to determine the correct size cooling system for your home.  There are many factors that come into play when conducting these calculations.  You must take into consideration number of people in the home, number of windows and doors, roof type and materials, as well as the direction each side of the house faces. When sizing a heating and cooling system for a home, rule of thumb measurements can yield an improperly sized system. Yes, you've probably heard it all before, but a poorly sized HVAC system can lead to an uncomfortable living environment and higher bills for the homeowner, to name a few of the problems

The popular method of calculating heating and cooling loads is to use ACCA, Manual J-compliant load calculation software. The old method of buying a Manual J book and sizing by hand is rarely used these days due to all the great software available. As I am sure you have read, to qualify for the Cash for Clunkers AC program, your HVAC professional must conduct Manuel J Loads.  As always for assistance with these matters contact us @ www.artplumbingandac.com