About Cool Casa Cool Casa Heating & Air located in Rockwall, TX is a family owned & operated business that started with one thing in mind, building a reputable company that is known for being extremely trustworthy, honest and fair. When we service your home or business we will provide you with peace of mind and an experience you wont forget. We want to gain your long-term business by doing a great job for you. We have built our business off of word of mouth referrals with little advertisements by providing our customers with superior services they can trust every time!