We had an air conditioner and heat pump installed about two years ago. They did a great job! On a…read moreSaturday evening our thermostat stopped working. I texted them and they responded within ten minutes. They had us fiddle around with things to no avail. They came out on a Sunday and determined the thermostat was a lemon. They upgraded with a new thermostat explained how to use it and said to please call if there are any issues. There was no charge for their three trips the wiring the thermostat and installation. This company is outstanding and stands behind their work.

I cannot say enough good things about this company and their service! Our AC went out on a very hot…read moreday, and ECS fit us in the very next day. We got several quotes and met with several other companies and after meeting Eric it was clear to us that ECS was the best option. He was professional, kind, and above all knowledgeable and honest. We felt so comfortable trusting Eric and his team. They were able to start the AC/furnace replacement promptly and worked efficiently to have our AC up and cooling the house by the end of the first day of work. I wish I could remember the names of the technicians that installed the unit, but they were fantastic. So professional, knowledgeable, and patient with all of our questions. They walked us through every bit of the install so that we knew exactly what was going on. Dana, in the office, was also very easy to work with. I couldn't recommend this company more!! I feel relieved knowing we got an excellent unit for a fair price with a reliable install job. And I love knowing that for as long as we live in the area, we know who to call for all of our AC/furnace needs!! They offer a very great maintenance plan, so they will be servicing our unit for years to come! Do yourself a favor, stop looking for other companies and call Elemental Comfort Systems.

So few companies will even do mini splits, much less demonstrate true expertise in the technology…read more Rudy and the team designed and installed an excellent system to heat and cool our garage and home office, completed the job ahead of schedule and for $2500 less than my nearest quote. There was a slight deviation from the equipment in the quote and what was installed and I wasn't even worried. Three weeks later I got a call that they had the part and they installed it! Being true to what they commit to, even if I wasn't bothered by it, seems to be their culture. Thanks!

We recently had our heating/cooling system replaced by Controlling Systems and we could not be…read morehappier with their service from beginning to end. Chris in sales, who is as nice and responsive as can be, gave us a fair and comprehensive breakdown of our options and all associated rebates. Jimmy and Darin, the installers were friendly, knowledgeable and efficient. Highly recommend!

Terrific experience overall. Furnace wasn't working this morning and they managed to get someone…read moreout same day. Very honest and quick to remedy the issue. Shout out to Tony who took care of the issue in no time. Very friendly, good guy, and looks like I found me new go-to for HVAC issues. Thank you guys! Jason

We would never go with anyone else... Circulating Air has been servicing our A/C system for years,…read moreand although it is old, they continue to give us honest and trusted advice for keeping the system healthy and operating, until we need to replace. Just cannot say enough about the integrity, efficiency and promptness of this company. They are also extremely reasonable with their pricing.

We have used this business off and on over the last 7 years and what I like most these days is that…read morewe have a really good understanding of my house and the issues that come up with it. I like that they track and document every service provided with photographs and that if they can send the same technician each time, they do so that person has a good memory of your situation with your home. They have always been prompt at returning calls and helping me figure out what I need. Even if their prices might be a wee bit high here and there, the peace of mind to know that we are being taken care of is worth it to me. I like knowing they have our house history, they have established a relationship with me over the years and I know that when they offer me options its not to just get all they can - there is a purposeful reason. If you are in a situation where you need an airtight service with a tracked repair history that you can look up in images etc, then this is a great place to call for assistance.

A furnace tune-up was requested. The tech did the tune up, found no issues, however, when the pushy…read moresales guy showed up, he tried to sell a new furnace AND air conditioner. The furnace is only 8 years old. Why would a new furnace, that works great, need to be replaced? Maybe because the customer was a 90 year old woman who was vulnerable. I will NEVER use M and M for anything again.

KJ Thomas Mechanical installed a new furnace and air condition unit a couple of months ago…read more.. Everything from start to finish was top notch! I can't even put into words how fabulous this company is and how caring they are about getting everything right I'm extremely particular and they exceeded my expectations many times over! Update: today May 13 just a couple of months after my furnace and air-conditioning were installed for reasons unbeknownst to me by air-conditioning stopped producing cold air I called the company was answered by a real person not voicemail or a robot... And with them 30 minutes they sent out my original installer Tate -to troubleshoot within 30 minutes cold air was blowing out of my registers. This company is first class and clearly Customer Service is over the top. Tate you're the best thank you for working your magic and it's now almost 8 PM and my house is cold :-)

KJ Thomas Mechanical definitely puts its customers first. We called them to service a 20-year-old…read morefurnace set-up. When one of the units failed to work, they offered three options: (1) a new unit, (2) try to find and install 20-year replacement parts, or (3) have a senior technician come back out the next day and see what they could do. Well, the next day, they took the machine apart and discovered that a dead mouse was stuck in the way of the fan, which prevented it from working. We realize that a new system will likely be required next season, but KJ Thomas Mechanical helped us achieve our immediate goal of getting through another winter season. Thank you!

They got bought out by welzig. I did not have a good…read moreexperience with welzig. Technician was smelly. Did not diagnose correctly.

We highly recommend CMS- a family-owned business based in Longmont- for any hvac service or…read morereplacement! Brien's furnace replacement crew of Lawrence and Zach were very prompt, personable, and professional. They replaced our old 80%-efficiency furnace with a 95% Carrier model in less than 8 hours, made absolutely sure that everything was done right and to Boco code, and left no speck of debris or trash. To top it all off, Brien's bid was VERY competitive with all other bids, he helped us apply for an Xcel rebate, and he offers a 2% discount for payments by check. This is a great local business, you'll be glad you hired them! -Tim in Longmont

We requested an Essency electric water heater installation. We also needed 240/220 run from the…read morepanel outside to the mechanical room. 1. We were given quotes for 4 different water heaters, including one gas heater. That allowed us to compare pricing & features. 2. We were given 2 quotes for the electrical work depending on ease or difficult access to the mechanical room. All quotes were detailed with line items for parts, etc. That was very professional vs the companies that give you a "black box" price with no details. Prices were reasonable for today's structure. Still a shock as we've had the house for 13 years with very few repairs needed. But it is what it is. We had a problem with the initial water heater hookup. They quickly sent out a top electrician (Pete) who verified everything and found one problem. He said he'd talk to the owner in case there was a problem with the water heater. The Essency has communication and app control features so the board working is critical. The next morning they had a full replacement water heater on the truck in case it was needed. It was not needed, Pete and Jacob had it up and running and reverified everything. Pete also caught that our router had paused the connection to water heater for some reason. Pete called later to make sure everything was good. We live near DU and there was no stalling around about coming out here. Every person that showed up communicated well and was good to have in our house.

6 reasons to think twice about save home heat…read more This one goes out to female homeowners who might be especially vulnerable to smooth-talking HVAC salesmen. A week ago, I had a regularly scheduled maintenance visit with Save Home Heat. What followed was a beautifully crafted upsell: psychologically astute, layered, and intricate. It may have been an isolated incident, due to a slow February, or part of a larger corporate ethos. The salesman tried to sell me a water heater, which I do in fact need, but also tried to say my 2019 furnace was basically beyond repair, and that I would need a new furnace, and because my AC was also the same vintage it would be best to get a new heat pump as well, for "peace of mind." The total came to $30,761.83. Here's exactly what happened. 1. The year prior, on a maintenance visit, Save Home Heat missed a critical repair, a major red flag, to fix the flue and combustion air for furnace. Flue and combustion air systems are key for safety, efficiency, and equipment longevity in fuel-burning appliances. 2. The salesperson tried to say what he called my 8-year-old furnace, which in fact just turned 7 in January, was old, meh (builder's grade), and pretty much beyond repair. He said the industry standard for my furnace was 12 years. The repairs they quoted me came to $3242.08. The salesguy said there were in fact probably more repairs lurking that he couldn't even see and best would be to replace the furnace altogether. Cost for a new furnace: $13,464.12. When I did get a second opinion, as strongly suggested by friends, I went with Carbon Valley Heating & Air. Dale Moe, the Carbon Valley service manager, said industry standard for furnaces was in fact between 10 and 15 years, and my furnace was well worth repairing rather than replacing. Estimate for Carbon Valley's repair, for flue and combustion air for furnace, and for return air in basement: Cost = $1898. 3. The Save Home Heat salesguy mentioned my furnace was grinding, which it wasn't really doing. He also showed me an amp reading and said the motor was using more than was indicated. His reading was 2.41. Therefore, I would need a new combustion blower for $898. The specified amount on the nameplate is 2.35. When Carbon Valley came and did a reading, their reading was 2.2. 4. Save Home Heat, in their estimate, quoted a repair for the blower wheel ($431), blower motor replacement ($850) and for a pressure switch ($224). Carbon Valley said the blower was "not grinding nor compromised, was balanced and showed no signs of needing repair." Dale said the furnace would not be working with a bad pressure switch and this another unnecessary "repair." 5. Save Home Heat then went beyond suggesting I replace my furnace. (February, given its mild temps, was apparently a very slow month for the HVAC trade!) He said, since my AC was the same vintage as my furnace, and therefore on the edge of its life, why not consider replacing both the AC and the furnace and swapping in a heat pump? Again, for "peace of mind." A heat pump would save me money on propane and since they were replacing everything at once they could really get in there do a great job of modifying the return AirDrop and supply ducting. Cost for a new furnace and heat pump: $25,195.57. 6. Save Home Heat used the classic sale tactics of creating fear and urgency. The salesman mentioned this was all pre-tariff pricing--God knows how much the new 2026 pricing would be when it would be instated very soon. Also, he pressured me more by saying their offer was only good for February, giving me roughly a week to come up with a decision. So my takeaway? Always get a second opinion for big ticket items. Always be skeptical and curious about every single line item. Work with a company that has proven its integrity and is worthy of your trust. As for me, I cancelled my membership with Save Home Heat and will not be working with them in the future.

This is a great company to work with. Our boiler had gone out right after we receive our quote from…read moreJeremy for a new system. They were out in 2 days. Right before the 03/06/26 storm. Talk about just in the nick of time. Devon arrived first to start the removal of the old system, while hid partner Ruben went to pick up the new boiler. They worked solidly all day with nary a break. Clean, zero mess left behind. Small company (brother and sister run) with great prices. If needed, I will not hesitate to call them again.

Easy to deal with and professional. Had them replace old…read moreA/C with a heat pump. Team did a great job