HVAC reviews in Boulder, Colorado

called for ac repair on a saturday and craig was super quick to respond. his knowledge about hvac systems is top notch, he was friendly, answered all my questions, and worked really efficiently. he gave helpful advice and fixed the issue with my air conditioner right away. would definitely use this company again! later, craig and his assistant came to handle three more ac-related jobs at my place in boulder. once again, they were very professional, super friendly, and clearly know their stuff inside and out. the work was excellent every time. most recently, craig installed a humidifier onto my furnace. he finished everything quickly, removed the old equipment, put in the new one, and took the time to show me exactly how it all works. craig is simply the best ac repair guy around—can’t recommend him enough!

Who would have thought that Justin would come out and save my furnace after it suddenly stopped working! My experience with Comfort Zone Heating & Air Conditioning started with the friendly staff who scheduled my appointment quickly after receiving my request, and finished with the most helpful and considerate technician I’ve ever met. Justin fixed my furnace fast and even shared some tips to help save energy during the colder months. I’ll definitely use them for all my heating and furnace repair needs in the future.

Just had Duane come out to do a clean and check on my furnace and AC. As always, he showed up right on time and did excellent work. I highly recommend him for furnace repair and yearly maintenance. Duane has helped fix my furnace before, and now I have him stop by once a year to keep everything running smoothly and efficiently. He takes care of any repairs that are needed, does the job correctly, and charges fair prices. I called today and he made the extra effort to come by at the end of his day, even though I said there was no hurry. Duane is honest and hardworking. I prefer to support local businesses like this instead of big companies. If your furnace or heater needs repair or a tune-up, definitely give them a call. And if not, keep their number handy for when you do!

I reached out for an estimate to replace my furnace system. The representative I worked with was fantastic—very responsive, polite, and professional. It was simple to arrange for someone to visit and assess my furnace, provide their advice on what would work best for my home, and give me a quote. After a quick inspection, we sat down together, and the technician was more than willing to answer all my basic questions without trying to upsell or pressure me in any way. I mentioned that I was getting opinions from a couple of other companies, and he was perfectly fine with giving me the time I needed to review their suggestions and make my choice. After having a few other HVAC companies come over, they all recommended similar work, but this company stood out for their promptness with estimates (some didn’t even send me a quote), and their pricing was very fair. Scheduling the appointment for the furnace replacement was also straightforward. The installers arrived on time, laid down plenty of drop cloths and plastic sheeting to keep everything clean, and got right to work. Although it was a long day for them, the installation went smoothly without any issues. I’ve been testing out the new furnace during the recent heat waves, and it has been working perfectly. It's the small details that differentiate a good company from a great one, and this company pays attention to those details. For instance, they replaced a bulb in my attic without me asking. During the installation, they needed to modify my attic access hatch to fit the new furnace and even installed a new access hatch at no extra charge. I’m extremely satisfied and would gladly recommend them for any furnace repair or HVAC needs.

we were pretty anxious when our furnace stopped working right before we were expecting guests and heading out for a family vacation. i called to schedule a furnace repair appointment for the following week, though they did offer to come out the same day. the technician, craig, arrived right on time and was very polite and professional. we were concerned we might be told we needed a whole new furnace, but craig carefully inspected everything, found a leak, and fixed it. he also recharged the system with the proper refrigerant. the total repair cost was about $150, and our heat was up and running again quickly. we’re definitely planning to use their furnace repair services again in the future.

When our AC stopped working during a really hot day in Boulder, I called for help and Craig showed up at our house in no time. He talked us through some helpful tips on how to keep our AC system running more efficiently and maybe even make it last longer. The best part was that he got our cooling system working again so our family, including our two young kids, could sleep comfortably that night. The pricing was very fair, and we definitely plan to use their HVAC services again in the future. Highly recommend for anyone needing AC or HVAC help in Boulder!

We’ve been using Comfort Zone Heating & Air Conditioning for our heater repair and maintenance for several years. When our furnace stopped working, they installed a new heater and air conditioner for us. Ever since, we’ve been really happy with our decision. Each year, they come by to do regular maintenance on our system. Every technician we’ve had—like Craig or Ruben—has always been professional, respectful, and helpful. If you need heater installation, repairs, or routine maintenance, I highly recommend them. Their service just keeps impressing us!

We recently bought a home and wanted an estimate for adding a furnace in the garage. Jeffery got back to us quickly and gave a much better price than the other company we contacted. He arrived right on schedule and installed both the furnace and thermostat in about four hours. I highly recommend Comfort Zone Heating & Air Conditioning for any heating or cooling needs. This was actually the second time we used them, and they impressed us again. Our AC stopped working during a heatwave, and with temperatures expected to be very high, we needed help fast. I called and spoke to Jeffery, who explained they were busy but would try to fit us in. He and his team showed up in less than 30 minutes and quickly found the problem—a failed capacitor. The repair was done efficiently, and the cool air was back on in no time. We are very happy with the service and would recommend them to anyone needing AC repair or HVAC work.

I can't say enough good things about our recent furnace repair experience! We came home after being away and found that our furnace had stopped working properly. With the cold Colorado weather, we needed help right away. The technician, Ruben, came out quickly to check on our furnace. He clearly explained what the problem was and gave us honest options for both repairing or replacing it, without pushing us to choose one over the other. Ruben was upfront about the pros and cons of each choice, which helped us feel confident about our decision. We decided to go ahead and have the furnace replaced. The proposal included several options and was sent to us in no time. The new furnace was ready for installation within a few days, and the actual installation only took one day. Ruben went the extra mile during the whole process. Even when a few unexpected issues popped up, he stayed until everything was finished so our home would be warm again that same night. He was professional, friendly, and made the whole situation much less stressful. We truly appreciate the great service!

we had an emergency one evening when our furnace suddenly stopped working. we called a local furnace repair company in Boulder and they got back to us right away. tristan, the technician, was really polite and started working on the furnace as soon as he arrived. the cost was fair, and we were told up front that there would just be a service call fee, with an estimate given before any repairs. there were no surprise hourly charges. tristan explained the problem honestly without making it sound worse than it was. he managed to get the furnace running that night and ordered the necessary part, then came back to install it as soon as it arrived. i'm very happy with the service and would recommend them to anyone looking for reliable furnace repair in Boulder.

Comfort Zone Heating & Air Conditioning handled a complete furnace and AC replacement at our son's new home in Boulder, right before his family moved in. Tristan and the crew kept us in the loop every step of the way. Any time we had questions or needed to reach out, they answered quickly and explained everything in simple terms. During installation, Andrew even stayed late to make sure the heat was running smoothly that evening, which was important with Boulder’s cooler nights. They also discovered an old, damaged exhaust pipe that was leaking CO2 into the house and replaced it completely, making the home much safer. The whole process was smooth and professional, and we’re really happy with the results. Highly recommend for anyone needing HVAC service.

I want to start by saying how glad I am that I hired this HVAC company. A few days ago, my air conditioning unit started leaking water inside the house around 5 pm. As someone who has been in real estate for years, I called my usual HVAC technicians, but nobody answered. I searched online and found this highly rated company. They showed up promptly and did a thorough inspection of my AC system. Micah and the team quickly discovered the reasons behind the water leak. They were very professional and took the time to explain the importance of keeping the AC drain line clean, which is something I hadn't known before, even after flipping houses for years. This helpful advice will definitely save me money in the long run and help keep my AC working smoothly, especially during the hot Colorado summers. They also offered a very reasonable price for cleaning both units and fixing the drain system. I highly recommend this company to anyone needing HVAC services and will definitely use their services again in the future.

i had a really good experience getting my heater fixed in boulder. they got back to me quickly and answered all my questions about my heater. duane explained everything as he checked out my boiler and found the problem. he ordered the part i needed and came back soon after to finish the repair. now my boiler works great and i appreciate the careful work and clear explanations. duane even shared some helpful tips about my water heater. i would definitely recommend this company if you need heater repair in boulder.

We highly recommend their team to anyone in Boulder looking to install or repair an HVAC system, including air conditioning or furnace units. We had Tristan come out to set up a new A/C and furnace for our home, and the price was very fair compared to other quotes we received in Boulder. After a few years, we noticed a small issue with the A/C. We reached out by email, and Tristan got back to us right away and was able to stop by the same day. He quickly figured out that the problem was just an air filter that needed to be replaced. Tristan took care of it for us and didn’t even charge for the visit. We really appreciate how professional, responsive, and friendly he was throughout the whole process. If you need HVAC work done in Boulder, we definitely suggest reaching out to them!

After reaching out to a few other companies for an estimate on a new gas furnace and AC system, i wasn’t happy with their answers and didn’t appreciate being pushed to buy things i didn’t need. when i found this company, the sales consultant was quick to meet with me. instead of trying to oversell me, craig was honest about what my home actually needed. i put down a deposit to get started, and they let me know right away when the installation would happen. justin and duane, the technicians who handled the installation, were professional and kept everything tidy. they answered all my questions and made sure the job was complete before leaving. i’ve had some bad experiences with other plumbing companies, but this team really impressed me. justin even took a look at my hot water tank and fixed the venting, which had been installed incorrectly by someone else. he explained that it was leaking fumes and made sure everything was safe. if you’re in need of a furnace or heater repair, tune up, or even a full replacement, i definitely recommend giving this company a call. they’re honest, professional, and really know what they’re doing.

Our air conditioner started blowing warm air during a really hot day, and we needed help fast. I tried spraying the outdoor unit with water myself and it helped a little, but I knew I needed a professional to take a closer look. I called a couple of other HVAC companies but couldn’t get through since it was a Sunday afternoon. After reading some positive feedback, I reached out to this HVAC company and I’m glad I did. Paul got back to us within the hour and came over quickly. He let us know that spraying down the unit was a good idea, since it was pretty dirty, and reassured us that the AC system was still in good shape. Paul was very honest and didn’t charge us a service fee, even though he came out on short notice. He even turned down a tip when I offered one. It’s great to find an HVAC company in Colorado that’s reliable and trustworthy. I’ll definitely call them again for any heating or cooling needs, and I’ll recommend them to my friends and family.

I’ve been using this company for AC repair and maintenance for many years. They are always quick to respond, show up on time, and really know what they’re doing. Their prices are always fair, too. Over the years, they’ve helped me by repairing and maintaining the AC systems in different types of homes, including replacing an old central AC at my house and installing new AC units at other properties. No matter where I move, I always rely on them for all my air conditioning needs. Big thanks to Ruben, Andrew, Micah, and the rest of the team for always providing excellent service!

We had Micah come out to our home in Boulder to help with some AC repair and annual maintenance on our cooling system. The AC job was a bit tricky because it required creating a new vent to the outside, but Micah handled it smoothly. He communicated clearly with us and even worked well with other contractors on site. The pricing was very fair, and Micah was always friendly and took the time to explain everything to us throughout the process. We plan to call them for any future HVAC or AC repair needs and would definitely recommend their services to anyone! Recently, our blower motor stopped working, and Micah got it fixed really quickly with a great price. Once again, we were very happy with the service and have already told our neighbors and realtor about this company.

I contacted this company when my old heater stopped working during a cold weekend. I was out of town and worried about my house freezing up, but after a neighbor recommended them, I gave them a call. Justin and his team really understood my situation and quickly got to work, so I didn’t have to stress while I was away. When I got back, I saw that they were already installing a new, energy-efficient heater. The whole process was done with a lot of care and skill. Jeffery, the technician who handled most of the repair, was fantastic. He was always on time, kept a positive attitude, and made sure to communicate with me about every step of the job. Even when he had to work in tight spaces like my attic, he didn’t complain and made sure my property and pets were respected—he even let me know before using any loud tools so I could move my dogs. When he finished, everything was cleaned up perfectly. Thanks to their great service, my new heater works quietly and my energy bills have already gone down. I’m very happy with the experience and wouldn’t hesitate to use them again for any heater repair or replacement needs.

If you need AC repair or HVAC work, this team is the one to call. They recently replaced our air conditioner, furnace, and humidifier, and their attention to detail and skill were outstanding. Because they have a small crew, they really take the time to make sure everything is installed correctly and runs smoothly. The work was finished right on schedule and within the budget we discussed, and our system is working perfectly. Our third floor now stays cool, even when the temperatures are high, and we’re looking forward to saving money on our energy bills. Paul is extremely knowledgeable and only brings in other experts. Micah led the project at our home and did a fantastic job. Highly recommend reaching out to them for your next AC repair or HVAC project.

as a recently retired home inspector, i've worked with many hvac companies over the years, but comfort zone heating & air conditioning stands out for their furnace repair service in boulder. when one of my tenants called about a furnace that had stopped working, i tried to troubleshoot it myself but realized it needed a professional. i contacted their after hours line and got a quick call back from duane, who arrived in less than an hour. he had the right part with him and fixed the furnace right away, so my tenant didn't have to go without heat. duane even brought along some portable heaters just in case the repair took longer, which really showed he cared about keeping us comfortable. i always recommend this team to friends, family, and anyone needing reliable furnace repairs.