HVAC reviews in Fullerton, California

Evolution gets it right with techs who know what they're doing. They show up on time, do the job correctly, and are done in one go. The office team is equally top-notch - friendly, professional, and knowledgeable. I've sent all my neighbours their way for AC work; thanks Evolution for keeping my place cool!

Received a complimentary maintenance visit after nearly a year of ownership, which exceeded expectations. The equipment has performed flawlessly, with no problems reported. Ricky handled the service, addressing concerns and providing helpful responses - I'm extremely satisfied with the experience and would wholeheartedly endorse Evolution.

I recently had Diego from this company come out to give me an estimate for a full AC and heating system installation. He showed me some samples of units, but one in particular caught my eye - it was tall and slender with a decent capacity for my sizeable home. Two days later, I got the job done. The price turned out to be lower than another company I'd considered. Diego and his team arrived on time, answered all my questions, and did their work methodically. They left everything spotless, including their equipment. Overall, I'm extremely pleased with the service and would definitely recommend them to others - in fact, I already plan to send a friend's business their way.

Got a fair deal on my mini split installation. The techs showed up on time, were pleasant to deal with, and left the spot clean. Impressed by their work ethic and attention to detail. I'd definitely use them again if needed.

I stumbled upon their ad in a local mailer towards the end of last year and decided to reach out about replacing one of my AC/Furnaces. The main draw for me was taking advantage of heat pump tax credits, which led me to contact them.

Brian showed up promptly and assessed my needs, recommending a single-stage American Standard Silver system with an additional air return. However, I had reservations about this choice since previous quotes suggested a multi-stage inverter system. Brian assured me the Silver system would work fine and claimed the other systems were unreliable. He emphasized his expertise and promised a hassle-free experience.

I spent several weeks weighing my options before deciding to trust this company. We scheduled the installation, but just a week later I noticed only a 7-degree difference between the return and register temperatures. I brought it up with Brian and Evolution, and they sent Diego, the owner, to resolve the issue. Diego said the problem lay with the Air Handler and recommended upgrading it to a furnace. They rescheduled the replacement, but even after this, there was minimal improvement in performance.

Fortunately, I have another system on the other side of the house, which provides noticeable temperature changes when that system is on. I reached out again to Brian, Rose, and others at the company, and they attributed the problem to insulation issues in my home. However, they never conducted a blower door test or any other confirmation of their suspicions. They also couldn't explain why the original 50-year-old system worked so well despite making less noise.

The irony is that by adding back a natural gas furnace, I can no longer claim heat pump tax credits for the original spec'd system. To make matters worse, this new system performs far worse than the old one. Not only did I pay them to replace a working system with an inferior one, but I'm also missing out on rebates and credits.

The company has since become silent about resolving my issue. Their "100% satisfaction guaranteed" slogan lacks substance when it comes to fixing problems. They seem willing to sell a solution, but when it fails or doesn't meet expectations, they disappear. Their troubleshooting methods and system design approach also lack scientific rigor.

If you're willing to take a chance on guessing which system you need, Evolution might be an option. However, if you prefer a company that genuinely matches a solution to your home and stands behind their word, I'd recommend looking elsewhere.

Brian is by far the most knowledgeable and experienced HVAC professional I've encountered. His team tackled an old hydronics system that stumped other licensed contractors, but not Evolution. The technicians on site were skilled and courteous, delivering exceptional service that I wouldn't have found elsewhere.

We had a seamless experience with this company. Out of five interviews, Brian from Evolution was the last to meet with me. He demonstrated exceptional knowledge and communication skills, addressing every concern I had. The installation team, led by Sal and Andrew, arrived on time and completed the entire HVAC system replacement in one day. We're extremely satisfied with their work.

I was thoroughly let down by their sales approach. A neighbor had recently hired them two years ago and recommended them, so I gave them a call. The number they provided answered on the first ring with Jeff claiming he'd be there in 15 minutes without even knowing my location. We scheduled an appointment, and when he arrived, he started talking about all his previous customers and boasts about his 50-year experience. To be honest, he was rambling on a lot.

He assessed my system and immediately said it would require a $15,000 job, but offered to do it for $11 based on his neighbor's deal. At this point, I had no idea what brand or specific parts were needed. After hearing more about their services, I asked him to provide an estimate so we could consider the options. His response left me stunned - he refused to give estimates and only made deals. That was a major red flag.

He continued to push for several minutes until he realized we weren't going to sign anything on the spot. As he prepared to leave, he blurted out a price of $8,500 if they could install it the next day. The drastic change from his initial quote was unbelievable - he went from $15,000 to $11 to $8,500 in just 20 minutes.

I recently had my unit serviced by Evolution and the whole process was top-notch. From the initial call to the technician's arrival, everything ran smoothly. The team kept me informed throughout the appointment via text. Ricky, the technician, showed up promptly and got straight to work diagnosing the issue with my furnace. He fixed it on the spot and I'm extremely satisfied.

Excellent service from the Evolution Team, courtesy of GM/Diego. Our water heater stopped working mid-week, leaving us with no hot showers. The team responded quickly, securing a deal by Friday's end and scheduling installation sooner than expected. They exceeded our expectations. Both the technician and installer were top-notch. We're extremely satisfied and highly recommend.

A great experience with this company. The team did an excellent job, outperforming their competitors by a significant margin. We replaced our old furnaces and condensers with heat pumps, thanks to Brian's expert advice on configuration and cost optimization. The installation crew was friendly and efficient, completing the work in just one day after a two-day notice.

Evolution heating and air conditioning is top-notch. We encountered an AC issue and they sent a technician out the same day. The tech, Ricky, identified the problem as the thermostat after checking components. We bought a new one from them and our system is working flawlessly now. Over the phone, Rose and Valerie were courteous and helpful. They provided a fair price on the replacement thermostat. Even more impressive was Ricky's hands-on approach - he purchased the part, returned to install it quickly, and ensured it was functioning correctly before departing.

Ricky's professionalism, friendliness, and courtesy were commendable. His dedication to ensuring the job was done right set a high standard for their service. I'm thoroughly satisfied with Evolution's work and will continue to rely on them for all my HVAC needs. I also plan to recommend them to friends and family - they truly deliver exceptional service.

We had a great experience with Evolution. They installed Mitsubishi mini split systems in two downstairs bedrooms and an upstairs bonus room. As a Diamond contractor, they provided an extended warranty. Their estimate was 25% lower than another Mitsubishi Diamond contractor's, and included higher-end units not offered by the other company. Unlike the other contractor, Evolution didn't push a maintenance plan - instead, they showed us how to maintain the units ourselves. The installation team worked efficiently, were polite, and collaborated well together. They covered all floors and left the area spotless afterwards.

Evolution and Air has consistently impressed me with their responsiveness and professionalism. Scheduling an appointment was effortless, and the follow-up reminders were greatly appreciated. The communication throughout the process was top-notch.

However, our current system is still not functioning properly when we use the upstairs heater. We reached out to Evolution and Air after our original installer retired due to health issues.

Ricky, our technician, was a standout. He was courteous, considerate of our home, and took his time to explain the issue with our zoning configuration. The evaluation wasn't rushed, and I appreciated the follow-up responses from Evolution even after the service. Their professionalism and attention to detail have earned my loyalty, and I would highly recommend them for any heating or air concerns you may have.

We're thoroughly impressed with Evolution Heating And Air Conditioning's entire process. Scheduling the estimate was fast, while the actual installation was even quicker. The technician, Diego, was extremely knowledgeable and professional, answering all our questions without hesitation. He kept us updated on progress and installation. The crew did a fantastic job in our home, leaving everything spotless. Rose and Marissa provided top-notch customer service - both friendly and helpful. Overall, we had an outstanding experience with this company.

I'm impressed with Evolution Heating and Air Conditioning - they really stood out from the competition. The team was top-notch, every single person I interacted with was friendly, polite, and knowledgeable. I needed a new furnace ASAP after mine gave up on me during a brutal cold snap, and called six companies for quotes. The rep from Evolution showed up the same day, offered a great price, and had a solid plan in place. They arrived bright and early next morning to get the job done - and boy, did they deliver! It looked like a pro had been there all along. I'm sold on this company and would highly recommend them to anyone.

I recently had a heating issue that required attention, so I contacted Evolution Heating and Air Conditioning. From the outset, their promptness was notable - they arranged a visit for the following day.

Their technician, Tim, arrived on schedule and demonstrated a high level of courtesy, expertise, and dedication to resolving the problem. He took the time to carefully diagnose the issue and made an effort to fix it during that single visit.

The next day, I reached out again due to the same issue recurring, and the company responded swiftly. They scheduled another visit with Tim, who was able to fully resolve the problem. His professionalism and work ethic were evident in his thorough approach.

I'm thoroughly impressed with Evolution's rapid response, efficiency, and commitment to delivering quality service. It's refreshing to deal with a company that prioritizes honesty and reliability. Given their exceptional performance, I'll undoubtedly rely on them for future heating needs and recommend them wholeheartedly.

I hired Evolution Heating and Air Conditioning to install units in April 2025. After getting multiple quotes, Brian from their company gave me a straightforward estimate that impressed me. He always took at least 20 minutes to discuss my concerns over the phone, which I found impressive. His technical expertise was evident, and he genuinely seemed to care about the business.

The following Monday, September 15th, 2025, one of my units started blowing air from the air handler but wouldn't turn on the outdoor unit. I called them, and Ricky arrived on Friday with a solution – replacing the Definite Purpose Contactor. He explained why it failed so soon, which was helpful. Within 30 minutes, the AC was working again.

As a consumer, I want an honest company that delivers quality service at a reasonable cost. Evolution Heating and Air Conditioning exceeded my expectations in this regard. As long as they maintain their current level of service under the same management, I highly recommend them. Throughout the process, Rose provided excellent communication, which was much appreciated. Thanks to the team for their assistance.

I recently had a new HVAC system installed by Evolution Heating and Air Conditioning and it went incredibly well. The owner, Diego, handled all aspects of the quote, job walk, and final walkthrough, ensuring everything ran smoothly from start to finish.

The manager, Rose, was excellent to work with. When I made some last-minute changes to the initial quote and job plan, she was accommodating, responsive, and professional. Communication throughout the process was seamless and timely.

The technicians were top-notch, showing respect, working hard, and completing the upgraded heat pump system - including indoor unit, outdoor condenser, and duct work - without issue. The entire installation passed city inspection with flying colors.

A couple of minor issues were discovered during the initial checkup, but they were swiftly addressed once brought up. Overall, I'm thoroughly pleased with the new system, the work, and the price, which was quite fair. Evolution Heating and Air Conditioning gets a strong thumbs-up from me!

Came right on schedule. Friendly worker explained what they were doing in a straightforward manner without pushing for additional products, even when discussing allergy-friendly options.

I hired Jamison for a central cooling issue and they sent someone over on Saturday. Isidro, the technician, was knowledgeable and took before and after photos of my system. He got it working again. The team provided good service and I'd suggest them to others.