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!“

“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.“

“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!“

“We had an AC blower fan motor failure and I called another local company to inspect and diagnose. After two weeks and five phone calls, I was told that parts were not ordered and there was no timeline for fixing the unit. I called Blue Valley and they had a HVAC tech out (Jason Baker) within the hour, inspected, conducted diagnostics on the system, and located a replacement blower fan motor within about an hour. I received a call the next day that Jason and new motor were on the way over. My system was up and cooling within 24 hours from my initial call to Blue Valley. They are local, professional, experienced, communicative, and client focused. Jason was highly experienced and walked me through the diagnostics, describing what should be happening during start up etc. and made sure I understood what happened to the unit and how it would be rectified. I ended up learning a lot about my system and heating and cooling in general. It was a super positive experience and I highly recommend Jason and Blue Valley to everyone.“

“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!“

“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!“

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

“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!“

“It is a great feeling when you need HVAC work done and when the work is completed it not only exceeds expectations but is done at a very fair price. Home Run HVAC and plumbing has done exactly what their name implies; they have hit a 5 Star home run for some very difficult work in my 118 year old home. Highly recommend giving them a call if you are looking for help with heating, cooling or plumbing, you will be very happy if you do.“

“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“

“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!!!!“

“Took my call but never responded to setup an apt. There was a miscommunication between the answering service and routing the call... They did call back eventually and are correcting the issue.“

“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!“

“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“

“Corey and Vertical Heating&Cooling are simply unbelievable! One of our two water heaters was flooding into the crawl space along with flooding from a water line. The two were not related but created a giant mess. Corey responded right away. Reorganized his schedule for our emergency! Corey not only replaced the ruined duct, but called a water restoration company for us. Repiped and Installed a tankless heater, and did a maintenance check on our HVAC. When nobody would respond to our emergency, they were here within two hours. Their cost was very fair and their professionalism was off the charts! I highly recommend Vertical Heating and Cooling!“

“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!“

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

“They efficiently resolved all the appliance issues in my residence. I can only express my satisfaction with the professional approach, exceptional execution, and amiable service. Thank you sincerely for their diligent efforts!“

“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 ❤️“