Useful / Helpful Websites
The Texas Department of Licensing and Regulation (TDLR)
TWC
The Air Conditioning, Heating, and Refrigeration Institute (AHRI)
Alliance to Save Energy
American Council for an Energy Efficient Economy
The American Society of Heating, Refrigerating and Air-Conditioning Engineer- (ASHRAE)
Air Conditioning Today
Air Conditioning Heating & Refrigeration News
Contracting Business
Heating Gain/Loss Form
NATE
