90
ExceptionalLongmont, Colorado · HVAC
HVAC contractors in Longmont, CO
7 HVAC contractors in Longmont, out of 8 HVAC and plumbing businesses the Registry lists there. Ranked by Registry Score, owner-confirmed records first.
- Pros
- 7
- Avg. score
- 62.9
- Scored
- 7
Summary
Data last updatedAs of October 14, 2026, the ProComfort Registry lists 7 HVAC contractors in Longmont, Colorado. Most-listed specialties: heating & furnaces (5), air conditioning (3), commercial (2). 7 have enough public signals for a Registry Score, averaging 62.9 out of 100; 3 score 70 or higher. Together they hold 2,556 public reviews on Google, Yelp and Facebook. The highest-scored is Blue Valley Heating & Cooling, at 90 out of 100. 4 are Featured for 2026. View Blue Valley Heating & Cooling.
Counts come straight from the Registry's records. How the Registry Score works
Featured HVAC contractors in Longmont
88
ExceptionalLongmont, CO 80501 4.9(1,171 reviews)
HVACPlumbingHeating
50
Established48
DevelopingShowing 1–7 of 7
90
ExceptionalLongmont, CO 80504 4.9(622 reviews)
HVACHeatingA/C
88
ExceptionalLongmont, CO 80501 4.9(1,171 reviews)
HVACPlumbingHeating
75
Strong67
Established50
EstablishedLongmont, CO 80504 4.0(15 reviews)
HVACCommercial
48
Developing22
DevelopingHVAC contractors in Longmont: at a glance
- How many HVAC contractors are in Longmont, Colorado?
- As of October 14, 2026, the ProComfort Registry lists 7 HVAC contractors in Longmont, Colorado.
- Who is the highest-scored HVAC contractor in Longmont, Colorado?
- By Registry Score, Blue Valley Heating & Cooling (Longmont, CO) ranks first at 90 out of 100, among 7 scored businesses averaging 62.9. The score combines public reviews (50 points), digital presence (30) and reach (20); nobody can pay for a higher score.
- Which companies are featured in Longmont, Colorado for 2026?
- ProComfort Registry features Blue Valley Heating & Cooling, Welzig Heating Air Plumbing & Electric, Maddison Mechanical Inc, Homerun Heating & Air. Featured companies are selected editorially from public reviews and track record; listings and rankings are never sold.
- How are HVAC contractors in Longmont, Colorado ranked?
- By Registry Score (0-100, from public reviews, digital presence and reach), with records confirmed by their owners listed first. The full method is at https://procomfortregistry.online/methodology.
What this list includes: heating, ventilation and air conditioning businesses (furnaces, heat pumps, A/C, climate control). Tags come from each business's public category and name, so a company can appear under several trades. HVAC contractors across the US