13 HVAC Maintenance Contractors in Longmont, CO
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Top-Rated HVAC Maintenance Contractors in Longmont
M and M Heating, Cooling, Plumbing and Electrical
“Every reviewer in the sampled set awarded 5 stars, and none of those reviews expressed concerns about pricing or callbacks. Karl Moeller explicitly noted that…”
Welzig Heating, Air, Plumbing & Electric
“All six visible reviews award 5 stars, with three reviewers specifically naming technicians Zach and James while describing repair outcomes. Four reviewers…”
All HVAC Maintenance Contractors (13 total)
Blue Valley Heating & Cooling
“1181 reviewers maintain a 4.8-star average, with multiple five-star reviews praising specific technicians by…”
TNT Home Services - Longmont
“Among 864 reviews, the 5-star feedback consistently highlights specific technicians like Craig, Adam, and…”
KJ Thomas Mechanical
“All 252 reviews carry 5-star ratings, with customers consistently praising honest estimates, on-time…”
Colorado's Finest Heating and Air Conditioning
“215 reviews yield a 4.9 average rating, with Jordan mentioned specifically across multiple five-star reviews…”
Carroll Mechanical Services
“All 77 reviewers awarded 4 or 5 stars, with customers specifically praising technician knowledge, transparent…”
Prime Performance Mechanical
“5 of 6 displayed reviews carry 5-star ratings, with owners consistently noting the founder's hands-on…”
Circulating Air Inc
“All five detailed reviews award perfect five-star ratings, with four specifically praising technician…”
Highland Heating & Air, Inc.
“5 of 7 reviewers assign 5-star ratings, with Chris, Scott, Jack, and Ashley named as individual technicians.…”
Woelfel Heating & Air
“Five of seven detailed reviews award 5 stars, with technicians named in each top rating. Positive feedback…”
HVAC Maintenance Costs in Longmont
Routine tune-up and maintenance plan pricing for Longmont homeowners.
| Service | Low | Average | High |
|---|---|---|---|
Single AC tune-up | $72 | $129 | $206 |
Single furnace tune-up | $82 | $139 | $227 |
Full HVAC inspection | $155 | $283 | $412 |
Annual maintenance plan Includes 2 visits/year + discounts on repairs | $124 | $247 | $371 |
Premium maintenance plan Priority service + free diagnostics | $206 | $361 | $515 |
Duct cleaning (full home) | $309 | $489 | $824 |
Filter replacement (per filter) | $15 | $36 | $77 |
Prices reflect continental metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
HVAC Maintenance in Longmont, CO: What to Expect
Longmont’s position on Colorado’s northern Front Range brings the thin, high‑altitude air that pushes heating demand and strains cooling systems. Summers are warm but dry; winters regularly drop into the teens. Those factors make preventative service essential, and with six contractors serving the area—an average rating of 4.8 and four offering 24/7 support—hvac-maintenance Longmont is a frequent, sometimes urgent, homeowner expense.
Detailed price lists weren’t supplied for top maintenance items, but common cost drivers are annual tune‑ups, filter replacements, refrigerant top‑offs (noting AC systems derate 10–15% at altitude), safety and combustion checks, and repairs discovered during inspection. Colorado lacks a statewide HVAC license, so ask about local permits, trade credentials, and whether quoted work includes parts, labor and seasonal call‑out fees before committing.
No customer highlights or named technicians were provided, so review patterns matter: look for repeat praise for prompt emergency response and clear communication, and watch for comments about correct equipment sizing—mistakes show up fast at elevation. Prioritize contractors who document load calculations, offer maintenance plans, and explain derating and heating‑first strategies.