HVAC reviews in Longmont, Colorado

These guys are great! Solid, skilled, courteous, and dependable. I'm so grateful for the customer service the provide. They stand by their work and go above and beyond. Lawrence, the tech, is amazing! He really knows his stuff and leaves no stone unturned. Brien Carroll is a trustworthy and reliable owner. Nicki and Janis in the office are also on top things, friendly, and helpful. Love this local company!

Timely. Intelligent. Friendly. Only did what was needed. Highest rating. Hot water heater eval & cleaning.

Our plumbing technician Andy was very helpful, courteous, knowledgeable, friendly and thorough.

The guys who came to my house to do the repair were great. They were able to diagnose an issue and worked with Carrier to get it covered under warranty. I have had lots of issues with my furnace, I wish I would have started with them!

Andy did a a great job inspecting our HVAC system, and was very knowledgeable and helpful. I would highly recommend him!

Stellar service. Zach and Travis were friendly, knowledgeable, and communicative, so I learned a lot about how to maintain my now-working AC system in a new home. They identified the problem quickly, and even braved a hidden wasp nest to get to work. (Above and beyond!). I was worried about the final cost on top of the initial diagnostic fee, however the end price was extremely reasonable.

I wanted to be sure to leave a review because I’m very happy with the work and equipment I received by CMS. I had Dominic come out to look at my furnace that wasn’t working . We tried a few parts to try to keep my furnace working but it was over 20+ years old and needed to get replaced. Aj came over and gave me and my wife a fair quote and we scheduled install of our new Carrier furnace. Dario was the tech who came to install our furnace. I needed him to come a little early because I was recently in a car accident and needed to go to my doctor. He came early was very respectful and installed my equipment in no time. He cleaned up the area where the old furnace was and the new furnace was installed wonderfully and is currently warming my home in the cold weather we have been having . The front end was very responsive and helpful at getting my furnace checked out and they didn’t give me the run around as I’ve had with other companies . Nikki and Janis were amazing and worked with my busy schedule . They were one of the best company’s I’ve ever worked with and wanted to leave this review In hopes that helps you if your looking to have someone to come out and resolve your heating or cooling issue . Happy holidays

As usual, top notch service and inspection of on demand water system and furnace. I don’t have to worry because I’m in competent hands! With great communication. 30 yesrs with Welzig.

Andy was thorough, courteous and professional. Every step of the process was well-communicated — from arrival time to all systems that were inspected, as well as findings. Highly recommend!

Great service!! The technicians were informative and explained everything that they were going to do. I would highly recommend the service plan. Happy I chose this company with my new purchase to Home

Gerry the Plumber was amazing. So happy CMS is now offering plumbing service. He did a thorough evaluation of my new home, checking the sump pump, water heater, pipes, toilets, and test my water quality. He identified that my water had extremely high levels of chlorine. Very affordable and educational

Welzig serviced my tankless waterheater and checked the house water pressure and toilets for proper operation. He had a few recommendations and was very thorough. Thanks for the checkup.

So friendly and helpful!

Professional, courteous and prompt!

Prompt, courteous and professional. Extremely reasonable.

Reasonably priced and very reliable and trustworthy.

Honest and fair. Explained issue thoroughly, very trustworthy.

Never called me back. And showed up an hour late.

Great prices, on time, does a good job! Highly recommend!

Great prices, does a great job, and have always been on time.

Bob was extremely professional, kind and very knowledgeable. Yvonne was so kind and helpful. Thank you