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Cornerstone HVAC Services

HVAC Pros · 897 Adams St, Port St. Lucie, FL 34984

4.8 (287 reviews) · 36 years in business
  • Licensed & Insured
  • ⚡ 24/7 Emergency
  • BBB Accredited
  • License #FL-253472

Call now: (549) 224-3904

About Cornerstone HVAC Services

Cornerstone HVAC Services is an established locally-owned hvac contractor serving homeowners across Port St. Lucie, FL since 1990. Services include central AC and furnace install and repair, heat pump conversions, ductless mini-split installs, ductwork design and replacement, indoor air quality systems, and the increasingly popular spring/fall maintenance plans that keep manufacturer warranties intact. The technicians on staff carry NATE certifications and are happy to walk customers through a Manual J load calculation before quoting any system replacement, so you never end up with an oversized or undersized system.

Cornerstone HVAC Services serves homeowners across Port St. Lucie, FL and surrounding ZIP codes including 34952, 34953, 34983, 34984, 34986. 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

  • Manufacturer warranty work
  • Smart thermostat install
  • Spring & fall tune-ups
  • Heat pump conversion
  • Refrigerant leak detection
  • Ductwork design & sealing

Service area

Cornerstone HVAC Services covers Port St. Lucie and the surrounding metro, typically responding to addresses within 25–35 miles of 34984. 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 Services holds an active FL contractor license (#FL-253472) 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 Services and up to two other nearby hvac pros in Port St. Lucie. You'll receive up-front written quotes — usually within an hour during business hours — so you can compare apples to apples before booking.

Recent customer reviews

★★★★★
Veteran-owned and it shows — disciplined, organized, on time, and the workmanship is meticulous. I will absolutely call them again.
— Anthony P., Port St. Lucie
★★★★★
Honest pricing, showed up on time, and explained exactly what was wrong before doing anything. Quote was 25% lower than two other shops we called.
— Sarah K., Port St. Lucie
★★★★★
Got us booked the same day and finished the job in a single visit. Cleaned up everything before they left — couldn't even tell they'd been here.
— Mark T., Port St. Lucie

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