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Sterling HVAC

HVAC Pros · 5414 Madison Ct, Thornton, CO 80233

4.6 (465 reviews) · 35 years in business
  • Licensed & Insured
  • BBB Accredited
  • License #CO-312984

Call now: (202) 788-6166

About Sterling HVAC

Founded in 1991, Sterling HVAC has built a reputation in Thornton, CO 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.

Sterling HVAC serves homeowners across Thornton, CO and surrounding ZIP codes including 80229, 80233, 80241, 80260, 80602. 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

  • Ductless mini-split install
  • Indoor air quality systems
  • Whole-home humidifier
  • Smart thermostat install
  • Ductwork design & sealing

Service area

Sterling HVAC covers Thornton and the surrounding metro, typically responding to addresses within 25–35 miles of 80233. 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 Sterling HVAC holds an active CO contractor license (#CO-312984) 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 Sterling HVAC and up to two other nearby hvac pros in Thornton. 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

★★★★★
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., Thornton
★★★★★
Best contractor experience I've had as a homeowner. They sent a real written estimate, did exactly what they quoted, and the bill matched.
— Diego R., Thornton
★★★★★
Used them twice now. Always punctual, polite, and the work has held up perfectly. Saving them in my phone for next time.
— Priya S., Thornton

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Highland HVAC Services

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4.7 (473 reviews)
  • Licensed & Insured

Highland HVAC Services is an established locally-owned hvac contractor serving homeowners across Thornton, CO since 2018. Services include central AC and furnace install and repair, heat pump conversions,…

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Hometown Climate Control

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4.7 (458 reviews)
  • Licensed & Insured
  • ⚡ 24/7 Emergency
  • 10+ Years
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Founded in 2016, Hometown Climate Control has built a reputation in Thornton, CO as a straight-shooting well-respected hvac contractor that doesn't push system replacements when a repair will…

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