About Cornerstone HVAC
Founded in 1985, Cornerstone HVAC has built a reputation in McKinney, TX as a straight-shooting locally-owned hvac contractor that doesn't push system replacements when a repair will do. The team is unusually rigorous about indoor air quality and ventilation work in addition to core heating and cooling, and is one of the few local shops that will quote both a repair and a replacement option on the same visit so homeowners can make an informed call. NATE-certified, state-licensed, EPA refrigerant-handling certified, and proudly insured.
Cornerstone HVAC serves homeowners across McKinney, TX and surrounding ZIP codes including 75069, 75070, 75071, 75072, 75454. Pricing is up-front and quoted in writing before any work begins, with no obligation if the estimate isn't right for your project.
Services offered
- Commercial RTU service
- Ductless mini-split install
- Manufacturer warranty work
- Whole-home humidifier
- Refrigerant leak detection
- Heat pump conversion
- Ductwork design & sealing
Service area
Cornerstone HVAC covers McKinney and the surrounding metro, typically responding to addresses within 25–35 miles of 75071. Same-day appointments are commonly available for non-emergency requests booked before noon, and 24/7 emergency dispatch is offered for active leaks, electrical hazards, no-heat/no-cool calls, and lockouts when applicable.
Licensing & insurance
FixNearMe verifies that Cornerstone HVAC holds an active TX contractor license (#TX-775762) and carries general liability insurance covering work at residential properties. We re-verify licensing annually and remove any pro whose status lapses or whose review pattern deteriorates.
How to request a quote
Use the free quote form on this page to send your job details directly to Cornerstone HVAC and up to two other nearby hvac pros in McKinney. You'll receive up-front written quotes — usually within an hour during business hours — so you can compare apples to apples before booking.