Cool By Design was founded by Corey Mullins after more than 15 years in the South Florida HVAC trade — years spent learning that most comfort problems aren't about the equipment. They're about the building. A leaky duct system, an unsealed envelope, an oversized unit fighting a losing battle against Florida humidity — that's what Corey built this company to fix.

As a State Certified Class A Air Conditioning Contractor, he leads a team that handles everything from emergency AC repair to full system replacement, blower door testing, Manual J calculations, thermal imaging, and indoor air quality upgrades. Over 300 five-star reviews tell the story: show up on time, communicate constantly, do the job right.