10+ Years · Boulder
Experienced HVAC Companies in Boulder, CO
Experience matters. These hvac companies in Boulder have years of proven work behind them — and the reviews to back it up.
As of May 2026, RatingsNearMe ranks 13 hvac companies in Boulder, CO by verified customer ratings and review volume. The highest-rated is Welzig Heating, Air, Plumbing & Electric with a 4.9-star rating from 1,345 verified reviews. Also in the top tier: Allen Service and Sanders & Johnson Heating, Cooling and Plumbing. The average rating across all listed hvac companies in Boulder is 4.7 stars from 756 reviews per business on average.
HVAC service in Boulder: $75–$150/hr for repairs; full system replacement $4,000–$12,000 depending on size and efficiency.
Rankings updated May 17, 2026 · Scored by ratings (35%), review volume (30%), sentiment (20%), completeness (10%), availability (5%) · Not paid placement.
Local Market Snapshot
13
Businesses listed
4.7★
Avg rating
756
Avg reviews
May 17, 2026
Last updated
Top Rated HVAC Companies
Welzig Heating, Air, Plumbing & Electric
1831 Boston Ave, Longmont, CO 80501, USA
Allen Service
101 S Link Ln, Fort Collins, CO 80524, USA
Sanders & Johnson Heating, Cooling and Plumbing
7100 Broadway #7K, Denver, CO 80221, USA
HVAC Companies Rankings in Boulder, CO
| # | Business | Rating | Reviews |
|---|---|---|---|
| #1 | Welzig Heating, Air, Plumbing & Electric1831 Boston Ave, Longmont, CO 80501, USA | 4.9★ | 1,345 |
| #2 | Allen Service101 S Link Ln, Fort Collins, CO 80524, USA | 4.8★ | 6,563 |
| #3 | Sanders & Johnson Heating, Cooling and Plumbing7100 Broadway #7K, Denver, CO 80221, USA | 4.8★ | 756 |
| #4 | Meyers Heating & Air Conditioning1750 55th St #D, Boulder, CO 80301, USA | 4.8★ | 619 |
| #5 | Comfort Zone Heating & Air Conditioning2833 28th St, Boulder, CO 80301, USA | 4.9★ | 91 |
| #6 | Fusion Heating & Air Conditioning2005 Pearl St, Boulder, CO 80302, USA | 4.8★ | 62 |
| #7 | Omni HVAC Repair3970 Broadway, Boulder, CO 80304, USA | 4.9★ | 54 |
| #8 | Express HVAC Repair625 S Broadway, Boulder, CO 80305, USA | 4.9★ | 54 |
| #9 | Allied Heating & Air Conditioning663 30th St, Boulder, CO 80303, USA | 4.7★ | 63 |
| #10 | DNI Heating, AC, Refrigeration, Plumbing & Electrical3990 Broadway Suite 110, Boulder, CO 80314, USA | 4.8★ | 53 |
Ranked by verified ratings & review volume · Data from Google Business listings · Updated May 2026
All HVAC Companies in Boulder
Meyers Heating & Air Conditioning
1750 55th St #D, Boulder, CO 80301, USA
Comfort Zone Heating & Air Conditioning
2833 28th St, Boulder, CO 80301, USA
Fusion Heating & Air Conditioning
2005 Pearl St, Boulder, CO 80302, USA
Omni HVAC Repair
3970 Broadway, Boulder, CO 80304, USA
Express HVAC Repair
625 S Broadway, Boulder, CO 80305, USA
Allied Heating & Air Conditioning
663 30th St, Boulder, CO 80303, USA
DNI Heating, AC, Refrigeration, Plumbing & Electrical
3990 Broadway Suite 110, Boulder, CO 80314, USA
Elemental Comfort Systems
1200 Diamond Cir #G, Lafayette, CO 80026, USA
Prime Performance Mechanical
5471 Pinelands Dr, Longmont, CO 80504, USA
Timberline Mechanical System LLC
3195 Sterling Cir #150, Boulder, CO 80301, USA
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Frequently Asked Questions — HVAC Companies in Boulder
How do I find the best hvac companies in Boulder?
Look for businesses with 4.5+ stars, 50+ verified reviews, proper licensing and insurance, and transparent pricing. The top-ranked hvac companies in Boulder on this page are scored by our algorithm that weighs ratings, review count, and profile completeness.
Are hvac companies in Boulder licensed and insured?
Licensing requirements vary by trade and state. For most home service contractors, CO requires both a state license and liability insurance. Always ask any contractor for proof of current insurance and a copy of their license number before work begins — you can verify most licenses on your state licensing board's website.
How much do hvac companies charge in Boulder, CO?
Prices vary by scope, materials, and contractor experience. Use the free quote form on this page to request estimates from multiple local pros simultaneously. Getting 3+ quotes is the single most effective way to avoid overpaying.
What should I look for when hiring a hvac companies in Boulder?
Verify licensing and insurance, read recent reviews on multiple platforms, ask for a written estimate before work starts, confirm they pull permits when required, and check references from recent local projects. Featured businesses on this page are ranked by verified ratings and review quality.
How are the hvac companies on this page ranked?
Rankings use a transparent algorithm: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Featured Partner listings have paid for enhanced visibility but must still earn their position through real customer reviews — sponsored listings are clearly labeled.
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How Rankings Work on This Page
Every hvac companies on RatingsNearMe is scored transparently: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Businesses labeled exclusive or premium are Featured Partners — they have paid for enhanced visibility but must still rank through real customer reviews. We cap sponsored boosts so bad businesses can never buy the top spot.
Editorial notice: Ratings are based on publicly available data from Google Business listings. Consumers should independently verify licensing, insurance, and credentials before hiring any service provider. Last updated: May 17, 2026.
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