Groulx Mechanical Heating & Cooling Inc.

About the business:

At Groulx Mechanical Heating & Cooling Inc. in Longmont, we specialize in providing top-tier HVAC services for homes and businesses. As a reliable HVAC contractor, we're proud to offer a comprehensive range of heating and cooling solutions tailored to our clients' needs.

With over two centuries of combined experience within our team, we have honed our expertise in the HVAC field, delivering exceptional results consistently. Our commitment to customer satisfaction is evident in our 5-star rating, backed by 252 glowing reviews from satisfied clients.

When you choose us for your HVAC needs, you can expect professionalism and specificity throughout every step of the process. From initial assessments and system installations to repairs and maintenance, we cover all aspects of heating and cooling services with precision and dedication.

Based in Longmont, Colorado, our team at Groulx Mechanical Heating & Cooling Inc. is your trusted choice for reliable HVAC services, ensuring your comfort and energy efficiency year-round. Contact us today to learn more about how we can help you maintain a comfortable living space.

Hvac Contractor

In Longmont, we're your reliable HVAC Contractor, providing efficient and effective solutions for all your heating and cooling needs. Our …
Book from $50

Photos and videos

Hours of operation

Mon – Fri
Sat
Sun

8:00 AM – 6:00 PM
8:00 AM – 1:00 PM
Closed

Latest reviews

Write a review

Karina Crowder
8 June 2026
5
Mark was a lifesaver when our furnace had a rattling noise coming from it. He came over accessed the problem right away and got it fixed as soon as he was able too. Thank you Groulx Mechanical!
Emerald Murphy
8 June 2026
5
They were very friendly, and very reliable!
I was so happy with their service and support!
Larry B
8 June 2026
5
Groulx Mechanical is the absolute best, hands down. Mark quoted me on a new AC install for my townhome in Longmont, CO and not only came in with the best price, but with excellent equipment as well. He and his crew were prompt, courteous and paid attention to every detail. They were also fast and cleaned up real well when they were done. I couldn't be happier with this company. A special shout-out to Ana at the office for her role as well...she was fantastic! Thanks again Mark for the great job. I will certainly recommend you whenever I can !!! Be well and stay cool :-)