A Number 1 Air and Appliance: Sales and service of air conditioners, heaters and appliances in the Dallas, Texas area.
Airflow Systems, Inc.: Manufacturers of air cleaning, air filtration, and dust collecting systems.
Dallas ASHRAE: Dallas chapter of American Society of Heating, Refrigerating, and Air-Conditioning Engineers. Contains calendar of meetings, and online newsletters.
Guardian Engineering Company: Provides company history and information on services of kitchen exhaust and HVAC duct cleaning, and structural vacuuming.