HVAC reviews in Denver, Colorado

ross came out to check our heater after another company said we needed a full replacement. instead of just trying to sell us a new unit, he took the time to carefully inspect everything first. after a thorough look, he quickly found the exact part that was causing the problem and explained it clearly to us. he was able to get the part and came back to finish the heater repair just two days later. the price was fair, and the whole process felt honest and efficient. we really appreciated how easy it was to communicate, even getting a quick reply to our email on a sunday evening. we'll definitely use ascendant heating & air conditioning again whenever we need help with our heating in denver!

I've called on this company in Denver for heater repair a few times now. When my heater stopped working, Ross showed up and quickly figured out the issue within just a few minutes. I decided to go ahead and get a brand new furnace installed. The team had everything set up and my home was warm again in just a few hours. They were professional, knowledgeable, respectful, and kept everything clean. I highly recommend them if you need heater repair or any HVAC service in Denver. Great experience!

After waiting a while to make sure I could give a thorough review, I wanted to share my experience with getting our HVAC system replaced. Our old system stopped working in the middle of summer, so our house was getting uncomfortably warm. Ross came out right away to go over our options and helped us choose a new, high-efficiency HVAC system (97% efficiency, 16 SEER) that qualified for great rebates. Ross was very knowledgeable and professional throughout the process, and even brought over a portable AC to keep us comfortable until installation day. When it was time for the install, Herbert and Brendan arrived on schedule and got right to work. I tend to ask a lot of questions and like to watch the process, and they were very friendly and patient, explaining everything as they went along and showing me the different parts being installed. Their manager, Tony, also stopped by to check on the job, which showed they care about the quality of their work. The team made the whole rebate process super simple, sending me all the links and information I needed to apply. Not only did I get $2,800 back in rebates, but I also noticed a huge drop in my energy bills since the new HVAC system was installed. The installation was clean and professional, and they even sent flowers as a thank you, which my wife really appreciated. It’s been a couple of months now, and the new unit is running smoothly with no issues at all. If you’re considering a new HVAC system, I highly recommend this company. They’re local, professional, and really deliver on quality and service.

I recently had my furnace repaired in Denver, and the service was fantastic! The team showed up right on schedule with all the equipment they needed. Ross, Brendan, and Matthew were very professional and efficient throughout the whole process. They explained everything clearly, including how to use the new thermostat, and made sure I understood how my heating system works. The crew was friendly, polite, and cleaned up after themselves before leaving. I was really impressed with their work and wouldn't hesitate to call them again for any furnace repair needs. Highly recommend!

We have been loyal customers of Ascendant Heating & Air Conditioning for many years. They have always provided top-notch furnace repair and maintenance services for our home. Over the years, we've had them replace our furnace, and they also handle our annual furnace inspections and cleaning to keep everything running smoothly—especially important with Colorado’s cold winters. Thanks to their expert recommendations, we even upgraded our system to help with humidity control due to our older home's unique needs. The team is honest and never pushes unnecessary repairs or upgrades. Herbert, who handles our appointments, is trustworthy and always looks out for our best interests. We truly appreciate the reliable service and care we receive, and wouldn't trust anyone else with our furnace repair and heating needs.

Fantastic work! Meticulous job and James did my install when the temperature in Denver was 101 degrees.

We recently purchased a new house and while our furnace was in decent shape according to our home-inspector, the motor loudly broke down in the middle of an extremely cold winter night, just a month after moving. Early that morning, I called several HVAC shops and an HVAC technician from a large firm inspected it, confirming it was the motor, which is unfortunately an expensive repair. Pasterkamp was among the shops I called and they offered a better price to fix the motor, however. I spoke with Dirk, I'll add, and he answered all of my questions over the phone and seemed honest, straight-forward and knowledgeable--cost alone was not my sole reason to hire them for the job. A friendly and efficient Pasterkamp technician came to our place early the next morning to fix our furnace motor and it was up-and-running in no time, which was a great relief as Denver was going through a stretch of bitter-cold temps.

I'm giving them a top review for the following reasons: they answered all of my questions; they offered a competitive price; their service was quick and efficient; and the repair has worked-perfectly. I also prefer to support local, small businesses when possible. It was highly stressful to have our furnace in our newly-purchased home break-down in the middle of winter, as one can imagine, and they provided a great service.

Brett and Liam are wonderful. On time - even early! And checked everything thoroughly to make sure I was comfortable with my AC. Highly recommend them.

Terrible! I went with this company because of their ratings and longevity! I should have steered cleared when the owner stated the majority of the business is now commercial and not as much residential. The financial portion was easy because it wasn’t through them. After that, I received no phone call about when the install would happen. I called and was given the date, without discussion. A new upgraded thermostat was part of the deal, and it failed. The had to come out to replace it and because he didn’t have the same one they installed I was stuck with an identical version of the original one. 6 months later my a/c wasn’t working. The owner told me to check the breaker. I told him I wasn’t comfortable with touching anything because I didn’t want to screw it up. He understood and stated he would send out a technician. I stated I hope this is under warranty, and his response was, it should be.........well evidently it was the breaker. It was half tripped and never touched since they were there to replace the thermostat. I received a bill for 250 dollars for an electrician to reset the breaker! when I called to discuss the bill, the receptionist proceeded to tell me they don’t have a crystal ball to know what the problem was, and it wasn’t their problem! She was super professional! The Lennox a/c is awesome! Just find another company to install it!

We recently had a Mitsubishi ductless air conditioning system installed in our house and we are so pleased with the work performed by the nice people at Pasterkamp. We met with Jared, the residential sales estimator, who spent several hours with us answering lots of questions. He was so polite and congenial, and never rushed us to make a decision. After we accepted his proposal, the units were installed 7 - 10 days later. Eldon and Aron and Ken, the electrician, got it installed and up and running in a day and a half. Not only were these guys knowledgeable and quick, they also cleaned up their mess each day. Needless to say, we love the air conditioning and give Pasterkamp a five star rating.

Dan, the tech, was a nice guy. Got on my roof for 30 minutes just look over the swamp cooler with me. Said it all looked pretty good. Told him I'd replace the float valve myself. Talked to Dan at the truck, bought $24 worth of parts, and he rang up my bill at $279. He was on my roof 30 minutes, but I was charged for an hour drive time prior to that @ $34 per 15 minutes IN ADDITION TO a $45 Trip Charge. Recap: $279, $24 in parts, 30 minutes looking at swamp cooler, no repair made. Had a personal chat with Dirk, he explained their billing and he found this bill justified--FREE MONEY. I would never recommend or work with this company again. Everyone I spoke with was nice enough, but being charged $136 prior to even meeting the person at my house is ABSURD. I guess if the job before mine was right next store, I would have only paid $34 prior to meeting ole Dan.

This miserable outfit is the worst company I’ve ever dealt with.
They sold us and installed a Mitsubishi multi-splt HVAC for our Master area.
Their installation was faulty and during their second attempt at service they injected a refrigerant sealant which not only was unsuccessful in making the unit operable but rendered the unit completely unserviceable and voided the manufacturer’s warranty.
Pasterkamp’s response to our dilemma was as inattentive, incompetent and irresponsible as their installation and service has always been.
They have a complete disconnect from competent installation and a very casual and careless concern with whether their services have left their customer with even a functioning product. They simply don’t care or don’t have the capability to perform professionally.
After waiting for two weeks with no follow-up I followed Mitsubishi’s recommendation and contacted another dealer who confirmed the mess Pasterkamp left us with.
The difference between the new company and Pasterkamp was shocking.
After Controlling Systems conferred with Mitsubishi we purchased a new unit from them.
This experience left us with a $6,600.00 contribution to the land fill – thanks to Pasterkamp.
I’ve made demand on Pasterkamp for reimbursement.
To date their response is they are sure sorry but I created the problem they didn’t.
They excel in wormy avoidance of the responsibilities to the consumer necessary to conduct a first rate, reputable business.
Details and documentation of this mess can be found on the complaint I filed with the BBB against Pasterkamp.

We have used Pasterkamp Heating and Air conditioning for years.
They have always done an outstanding job for us. The depth of experience that they bring is super helpful and we appreciate their team recommending the best fit for our house. Highly recommend them!!

About a month ago we needed a replacement of water heater with more than 20-years-old. After calling several companies and getting quotes, I came across Pasterkamp heat & air conditioning. Pete was very friendly and informative and able to answer all of my questions. There were some challenges with replacing the tank and he confidently suggested logical solutions. He delivered the product that we wanted as promised. Aron, the installer came on time he was courteous, professional and paid attention to the details. Everything was completed within the timeframes provided. We had fantastic customer experience with this company and at a reasonable cost. I highly recommend Pasterkamp heat & air conditioning for their excellent service.

I would highly recommend Pasterkamp. We had purchased a house that had been converted from electric heating to an outside boiler system. The boiler went out in the first major snow storm, and we were without heat and hot water. To install a standard furnace/ac unit was not a straightforward installation. But their team spent the time to come up with a solution. Their installation team was friendly and did a fantastic job. We now have heat and hot water and a standard system. I cannot say enough good things about the entire team.

Pasterkamp provided a competitive quote and did an excellent installation. Ken and Doug arrived on time and put down protection in the main floor hallway and basement stairs for the removal of our existing furnace and installation of our new furnace. I highly recommend them!

Fast, friendly, and efficient! They repaired my heating system in no time. Great experience overall!

Excellent customer service. Liam has been our tech twice and he is wonderful. Professional and friendly.

Pasterkamp isn’t just a service it’s peace of mind. They took care of my AC with such care and precision, it felt like family looking out for me.

Dakoda Bell came today and as each time he’s been here, he did excellent work , was friendly and explained what needed to be done. We trust Blue Sky completely to do good work, and to stand behind their work 100%. We recommend Blue Sky to anyone you can’t go wrong; Not the cheapest, but the best. Mike

Quality, experience, and great pricing I was surprised at how affordable the service was, especially considering how well the job turned out. You can tell they’ve been doing this for years.