Cornerstone Air for Quality Heating & Cooling

At Cornerstone Air, we’re more than just a heating and cooling company – we’re your neighbors, rooted in the small-town values that define this community. Founded by Dak Jones and Clayton Terry, we’re proud to deliver honest, high-quality HVAC service with the kind of craftsmanship and integrity you expect from folks who know what it means to do a job right.

With over 20 years of combined experience, we’ve been serving the McKinney area and beyond, focusing on keeping our customers comfortable year-round. Whether you need a repair, a new installation, or routine maintenance, you can count on us to be there when you need us.

We don’t believe in gimmicks or flashy sales tactics – just straightforward service, quality parts, and equipment that gets the job done right. We’re proud to rely on American Standard, known for its durable and energy-efficient systems, made right here in Texas.

At Cornerstone Air, we blend the reliable service you’d expect from a small-town business with the latest technology for faster, more efficient solutions. We’re committed to being there for you with prompt, professional service, offering a 24-hour response time because we know HVAC issues don’t always wait for business hours.

When you choose us, you’re choosing a company that values trust, integrity, and doing what’s suitable for our customers. We look forward to earning your trust and keeping your home comfortable, no matter the season.