Since 1980 we have provided comfort solutions for thousands of Plano area homeowners. As a family owned and operated business, we focus on 3 simple fundamentals. Quality, Honesty, and Integrity. Our technicians are experienced, NATE certified and Carrier factory authorized. You can be sure you are in good hands when you turn to the experts Collin Air For a heating and cooling professional that meets your family's needs you can count on Collin Air Select product shipping now avaible on Honeywell and Aprilaire replacement filters by phone order. For more products, check out our Products page. Don't forget to stop by our Coupons Page to check out our current deal of the month!