Best Heating & Air Conditioning / HVAC In Longmont

“Very highly recommend!! The whole team is super professional, honest, kind and knows what they are doing. I am so grateful we used M&M to replace our furnace and ac units. They truly care about their clients and taking care of them!“

“I’ve used Welzig for a variety of services and have been incredibly impressed every single time. Most recently, I had their electrical team—Paul and his two apprentices—install conduit for my EV plug. While doing the job, they discovered that my ground wire wasn’t actually in the ground (a major safety issue I never would have known about). They fixed that right away and also installed a surge protector for extra peace of mind. Their attention to detail and commitment to doing things right really stood out.

I also had Johnnie come out to install a Halo water filtration system, and I absolutely love it! The water quality is amazing—it completely eliminated the chlorine, which is a huge relief for my autoimmune and other health issues. It’s made a noticeable difference already.

On top of that, I’ve now signed up for Welzig to handle all my ongoing maintenance needs for my furnace, AC, and tankless water heater. They’ve already done this year’s service, and everything is running smoothly.

From electrical to plumbing to HVAC, Welzig is my go-to. I trust them completely. They’re responsive, professional, and just great guys all around. Highly recommend!“

“Great service. Friendly and capable. Would be 5 stars if they were better about returning phone calls.“

“This is an outstanding HVAC solutions provider!

In order to sell my 21 year old townhome with original equipment, I shopped three firms to help me replace old equipment: Colorado’s Finest beat the pants off the other two, in terms of service, attitude and Value.

They care. They’re highly professional. They’re efficient. They are honest. They are timely.

This company gives the industry a great reputation where other firms game play, deceive and possibly leave a customer with bad impressions.

I recommend them to you, your family and friends, and work colleagues seeking HVAC solutions.“

“We’ve been using Service Experts for over a decade and they have always been great to work with. Jordan was at our house for our check up today and was great to work with!“

“Groulx Mechanical for the win again! Not only did they do a great job installing my new AC unit, they came back and helped set up my smart thermostat!“

“I called Home Run to help out my elderly mother who lives in Longmont. She was being severely taken advantage of by another HVAC business. Home Run lived up to their name, knocked it out of the park and took care of my mom quickly, and more importantly, fairly. I cannot thank them enough.“

“Theses' guys are great - I guy's are professional, friendly and know what they are doing.“

“Orel and Aiden installed a whole house humidifier and did a wonderful job. I’ll be using them again for our HVAC needs.“

“If you're sweating to death in your house because your AC died and you've been told you have to get everything replaced to the tune of about twenty grand, but you don't know a single thing about HVAC installs and are concerned about some nefarious company screwing you over—

Relax. You've found the right place. Bob and his crew are excellent—and they're honest. Liz in reception is very nice. I got estimates from multiple places and even though I hadn't yet signed a contract with Circulating Air, Bob took the time to explain to me why the other bids (from Cooper and DNI) were actually terrible. It turned out they were offering me about 25% less for 25% more.

The install took less than a day. When I had a problem with the AC keeping the house cool, they promptly came out and fixed it (turns out it was a manufacturer instruction error about how much refrigerant to add.)

It is stressful when you're about to drop 18K on a big project—particularly if you don't know anything about HVAC and are ripe for being ripped off.

Go with Circulating Air. You won't be sorry. Also, if you're contemplating going with a place that offers financing, don't. Try to get a HELOC or other sort of bank loan. It ends up being cheaper.

Thank you, Circulating Air!“

“Colorado Green Plumbing is amazing. Not only did the technician walk me through what the issue was, he did not choose the most expensive method to fix the issue, he started small and the fix worked. This is like the old days were the folks showed up on time, you could trust them and they wanted your business for life, not just for a short term profit!“

“I had a problem with my toilet and it was going to flood the house! I called Brent Burger with TNT and he came right over after working all day and took care of the problem! I highly recommend him and this company! I’ll never call any other company for my issues again! Thanks Brent, you’re a lifesaver and a true angel ❤️“

“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“

“Impressed by the team's professionalism and attention to detail during our ceiling installation. They completed the task efficiently, and the new ventilation system works perfectly. Highly recommend!“

“Work accomplished within apptox 1/2 hr !
Well done. Lovely people . Will recommend
To others in my neighborhood. Reasonally priced as well.“

“Great Company! Great service tech’s, and wonderful office help! Many thanks to Chris & Ashley for fixing our heat pump!!!!“

“I have really enjoyed the service from SAC. They are reliable and deliver a great value.“

“The owner literally came out in the snowstorm last minute this evening to get my heater started when it stopped working (obviously on the coldest night!) He was kind and honest and didn’t try to sell me stuff I didn’t need! Will definitely be my new HVAC go to!“

“I cannot express enough how great Harvey and Stephanie are! With the temperature hitting triple digits today Harvey was booked solid and unable to get to me, but he and Stephanie took time to help me trouble shoot why my AC wasn’t working. Walked me through several things that could be the issue and what to do. I was able to get it up and running thanks to their help. Thank you!“

“They were all very polite and professional. So far the furnace is working well, and we look forward to getting the A/C finished in the spring.Services: A/C system repair“