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Cornerstone HVAC Services

HVAC Pros · 7392 Cedar Ln, Bellingham, WA 98229

4.2 (234 reviews) · 27 years in business
  • Licensed & Insured
  • License #WA-945720

Call now: (382) 709-3812

About Cornerstone HVAC Services

Founded in 1999, Cornerstone HVAC Services has built a reputation in Bellingham, WA as a straight-shooting family-run 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 Services serves homeowners across Bellingham, WA and surrounding ZIP codes including 98225, 98226, 98229. 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

  • Central AC install & repair
  • Furnace install & repair
  • Spring & fall tune-ups
  • Refrigerant leak detection
  • Manufacturer warranty work
  • Commercial RTU service

Service area

Cornerstone HVAC Services covers Bellingham and the surrounding metro, typically responding to addresses within 25–35 miles of 98229. 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 WA contractor license (#WA-945720) 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 Bellingham. 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

★★★★★
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., Bellingham
★★★★★
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., Bellingham
★★★★★
They diagnosed an issue three other contractors had missed. Fixed it in two hours and didn't charge for the diagnostic visit. Easy 5 stars.
— Karen W., Bellingham

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