Groulx Mechanical Heating & Cooling Inc.
Longmont, CO Furnace Repair · #4 of 4
Overview
Groulx Mechanical lists focused furnace repair and diagnostic work as a core service. The company notes Lennox and Mitsubishi preferred-dealer relationships on its site. Same-day emergency response is advertised for no-heat situations. Groulx Mechanical states financing is available for larger repairs. Longmont winters increase combustion-safety demand, and the company highlights local furnace maintenance offerings.
Furnace repair specialist serving Longmont area homeowners and light commercial customers. Lennox and Mitsubishi preferred-dealer status appears on their website. Emergency Response is listed as same-day for urgent heating calls. Financing Available is noted for larger repairs and installations.
Score breakdown
Longmont, CO Furnace Repair average is 85/100. Ranks #4 of 4 listed Furnace Repair providers in Longmont, CO.
Composite of public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment of provider profile. See full methodology →
vs. Longmont average
| Signal | Groulx Mechanical Hea… | Longmont avg | Delta |
|---|---|---|---|
| Vouched Score | 82/100 | 84/100 | -2 vs avg |
| Google rating | 5.0★ | 4.9★ | +0.1 vs avg |
| Review volume | 265+ | 1,675+ | -1412 vs avg |
Pros
- High Google rating (5.0★ across 265+ reviews)
When to choose them
- You need no-heat / emergency furnace repair
- You need furnace tune-up & maintenance
- You need same-day or after-hours service
- You need to finance the work
- You prefer a family-owned operation
Services
Service area
Guarantees & credentials
- Licensed and insured
Sourced from the provider's own website. We surface these as published; we do not independently verify each license or warranty.
Contact & hours
Frequently asked questions
What are the pros of Groulx Mechanical Heating & Cooling Inc.?
When should I choose Groulx Mechanical Heating & Cooling Inc.?
What is the Vouched Score for Groulx Mechanical Heating & Cooling Inc.?
How can I contact Groulx Mechanical Heating & Cooling Inc.?
What does furnace repair service typically cost when working with a Longmont, CO provider like Groulx Mechanical Heating & Cooling Inc.?
Does Groulx Mechanical Heating & Cooling Inc. do Furnace Repair in Longmont, CO?
Does Groulx Mechanical Heating & Cooling Inc. do Emergency HVAC Service in Longmont, CO?
Compare with nearby providers
| Provider | Vouched | Years | |
|---|---|---|---|
Groulx Mechanical Heating & Cooling Inc. (this company) |
82/100 | 5.0★ (265+) | — |
Mountain Valley Plumbing and Heating ⭐ Best for Combustion-Safety Diagnosis · ⭐ Most Transparent Pricing |
84/100 | 4.9★ (875+) | 19+ |
| 78/100 | 4.8★ (860+) | 10+ | |
M and M Heating, Cooling, Plumbing and Electrical ⭐ Highest Vouched Score · ⭐ Best for Heat-Exchanger Replacement · ⭐ Best for Gas Valve & Combustion Repair |
91/100 | 4.9★ (3,520+) | 25+ |
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Profile last updated July 28, 2026.