HVAC reviews in Phoenix, Arizona

It was my first time using this company and I was glad I did! Our AC went out at 2 am and Tom was at our house by 8:15 am. He found the problem, showed me a video of the part that needed to be fixed, discussed pricing and my AC was back up within 30 min. I highly recommend this company. Great service!

We had a problem with our air conditioner in our master bedroom. After our original service company failed to correct the problem, we contacted Mountainside Air. Chris found the problem and corrected it and outline the options which were available to us to replace our AC unit, which was 10 years old. We contracted with the company for a new AC unit which was installed flawlessly and works perfectly. Based on our experience, we can recommend Mountainside Air for any HVAC problems that you may have.

After our excellent experience with Mountainside air, we elected to replace our thermostats in the remaining areas of our home. We contacted Mountainside snd received a quote for the three thermostats we needed. Several days later Chris successfully installed all three. Including the app. We are very satisfied with this company.

In August 2025, our new air conditioner in the master bedroom quit working At 6 AM I called Mountainside and spoke with Steve who told me what he thought the problem was and would like to schedule a repair call today. Steve came on time and his suspected problem was correct. He corrected it and our air conditioner is working perfectly now. In addition, he was so kind as to repair the wall around our thermostat for this air conditioner snd repaint it with the paint that we supplied him. I don’t know how much more anyone could expect of any company than what we have received from Mountainside air. I would highly recommend them for any of your HVAC Issues that you might have.
Richard Juel

Excellent experience, glad we chose Mountainside Air. Cristian provided thoughtful, factual explanations as to the issues our older unit is facing but did not pressure us to purchase anything. Definitely felt like a valued customer. We will be using this company again for sure!

Ive used the guys personally and professionally. I have recommended them to other folks who have struggled with HVAC which went well. These guys know what there doing. Answer the phone. Show up. Dont need baby sitting. Are professional and decent people. And get the job done.

Very impressed with Chris the tech working in my AC unit. Was very thorough and explained what was going on. Impressed with the customer service with the information on a new unit. New unit to be installed soon. Thanks guys. Additional review. Raul and Josh put a new unit on my house Monday. Both keep me updated on the progress and when completed showed me how to use the new thermostat and answered my questions. I’ll definitely use this company again. Very impressed

Communication was on point. The tech hit the time window of arrival that was given and they came on short notice when our AC went out. Tech took pictures and showed in detail for repair to be done. Highly recommend this company

Cristian was the Mountainside Air technician who recently serviced our two AC units.

For us, he checked all the boxes: He arrived on time, was thorough and honest in his analysis, was clear on explaining specific areas of concern, and performed the maintenance flawlessly.

We were late in scheduling our AC maintenance this year, and several other companies were booked out for months.

We feel fortunate that Mountainside was able to get us scheduled so quickly, and that Christian was our technician as he provided provided quality service.

Best a/c company I have ever used. Cristian is amazing, professional, punctual and absolutely the BEST a/c tech ever. I have lived through a nightmare for 5 years. Dealing with 4-5 different a/c companies that all lie. If they tell you it's just the way the a/c units are made and not a word about air flow.....run as fast as you can . Save yourself the hassle and trauma, ask for Cristian ❤️. This might just be the last honest and trustworthy a/c company out there. Also, very reasonable prices, and they stick to their estimate.

Awesome awesome service!! My mother's a/c took a crash so I called Mountainside Air on a Sunday spoke to Steve, one of the owners, he told me they weren't available until Monday, but was more than willing to help me over the phone being that the issues I described could be an easy fix. Unfortunately we did need service, Steve showed up promptly with a clean truck, uniform and attitude! Gave me straight nuts and bolts on what's was wrong along with other economical options. Never once did I feel pressured to choose a certain option he presented. Decided to go with repair and left her a/c working! Will definitely have him out for my personal home as well! Highly recommended!

Highly recommend Mountainside Air! My husband and I are very grateful for them and always appreciate how quickly they can schedule us. We got a new AC from them last year and they were amazing. This year we remodeled our house and they came out to check that everything was working well. Great people, great business. Thank you!

Mountainside HVAC is amazing. The staff are so knowledgeable and professional and make sure your system is running properly. Run don’t walk to have them evaluate your Heating system. Just the best. Techs never in a hurry, just the best and don’t stop until everything is working perfectly. Absolutely the best!!

I have been in my house for less than a year and I had lost the cool air from my HVAC system. I called Mountainside and a repairman arrived the same day on schedule. He was courteous and diagnosed and fixed the problem very quickly. He showed me basic filter maintenance to perform that will keep the problem from recurring.

In Phoenix is gets hot, and stays hot. Our AC went out, and Mountainside was able to be at our door within 2 hrs. They fixed the AC within 1 hour. They also provided diagnostics to help me understand how much potent life is left within our AC unit. Best in show!!

Mountainside has been quick to respond and send someone out quickly anytime I had AC issues. The tech they sent out (Cristian) was super knowledgeable and polite. I appreciate them not always trying to upsell but always giving the option.

The team was prompt on time for the appointment. They made sure everything was secured and cleaned up when they left. Great service by the whole team!

My a/c went out late last night and a friend recommended me to contact this company. I called first thing this morning and from the initial phone call to the completion of the repairs it took 2 hours tops! Thank you so much to my technician Chris who was fast, knowledgeable and extremely kind. I would recommend this company to anyone who needs efficient repairs done in a timely manner!

My AC went out late in the evening and I called Mountainside Air. I talked to Steve about the issue and he made me first on his list for the next morning. Steve was very nice and thorough and figured out the problem quickly. Soon, my cool air was flowing again. I will definitely use this company again.

My ac unit quit blowing cold so I googled for ac service in my area, found them, and saw all the awesome reviews. So I figured I’d give them a try. I filled out the contact us on their web page and I heard back in under 10 minutes, and got scheduled quickly… and also they were able to accommodate my schedule on a Friday. They diagnosed the issue which ended up being a relatively cheap replacement part. Best part is both service techs were super knowledgeable and pleasant. No pressure up selling and they gave me great advice. I am a customer for life now and highly recommend!!

Cristian was awesome! Very knowledgeable and was very transparent on the repairs that needed to be done. Definitely would recommend!

The team was excellent, nice and very detailed group of guys. They took their time to make sure everything was working as expected, taking no shortcuts.

Cristian did an amazing job. He was here bright and early and the job was completed in under 2 hours. The price was very reasonable! I would recommend this company to anyone who needs their AC repaired. Thank you again Cristian and Mountainside for an excellent job well done