Best Air Conditioner System in Phoenix AZ

This company and its employees were AWESOME from the get-go. Jeff, the sales rep, was extremely professional and spent a long time reviewing different options with us. He even put on booties when entering the house. He was clean and dressed with a company shirt. We were shopping for a new a/c, but did not plan on having it installed until cooler weather in the Fall. Jeff recommended minor things that would make our new a/c function to its full capacity.

Unfortunately, our a/c died a few weeks after our research. Desert Diamond was able to scheduled our new installation the following day. They are a 24/7 business.

The 3 installers encouraged our questions and covered everything in the utility room, where they had to access the attic. They totally cleaned up the yard, garage, and utility room. David, the lead installer, was patient in educating us with the new thermostat and answered all of our questions. After a long tiring very hot day, he was patient and in no hurry to get on the road until he was sure that we were content, satisfied, and had all of our questions answered.

We were extremely pleased with our installation crew: David, Russell, & Andrew. All 3 of the employees were respectful and hard workers.

Jeff will pay us a follow-up visit to check on our satisfaction and to inspect the job.

We decided to have them Aeroseal our ducts. It was completed quickly and easily. They covered everything in plastic and even vacuumed when finished. Doesn't get any better than that.

Our new a/c purrs like a kitten. We are even able to set the thermostat at a higher temp and be completely comfortable all the time. We can't even tell when it is on. It's the best.

Don't bother with the rest, go with the best - Desert Diamond Mechanical.

Called saturday night because our ac went out and it was getting pretty hot in the house in a matter of a few hours. they called back that night and were there the next morning! Very happy with the prompt service!

Awesome company! We originally hired Promise Heating and Air when we were remodeling our home and needed to replace our complete duct system. The team was very professional and punctual, one of the best companies we used for our remodel. After our great experience we signed up for their ongoing maintenance plan and have been very happy with the high level of service we have received. All of their employees are very nice and presentable and when entering our home the technicians wear shoe coverings to avoid making a mess, Overall awesome service - 5 stars!

Jacob came out and did a complete inspection of the system. He then made recommendations of what's required also pointing out what isn't required but nice to have.
The job was promised to start and finish the next day. They kept the promise. Also all the communication was straight forward and upfront.
The new water heater installation looks very professional and I can see that attention to detail was important to the installation crew.

James showed up quickly and was knowledgeable and friendly. He informed me of the price for diagnostics before starting and found the issue quickly once he inspected the HVAC. He let me know the price for the repairs and made sure I was comfortable with it before starting. He then repaired the issue and got everything working. I was impressed with the work and had him perform the biannual maintenance on my HVAC as well. I am very happy with the service and have signed up for there monthly maintenance plan.

Excellent company. All of their guys are great at their job and work clean and efficiently. I just had an AC unit replaced and I was super pleased with their work. I highly recommend them.

I am soooo impressed! John arrived when he said he would, knew exactly what was wrong with our a/c unit, pulled the part off the truck and had it working in about 10 minutes! Very courteous, knowledgable, and honest - 3 must haves in an air conditioning repair company. I highly recommend Valley's Best and will definitely contact them again for any a/c problems.

2 vents were replaced without switches (and without my knowledge, too). The walls were recently painted and the man pulled the old vent out and it also peeled out the paint. He did not communicate with me about what happened. Dishonesty, over priced and poor quality of work.

Such great service and technician was so great.

I would highly recommend this company.
They were efficient, professional, and informative. They got a new system installed for us in time for summer at an unbeatable price.

Great company to work with! Honest and reliable technicians. I highly recommend!

Nick responded to the call and did an excellent job! He answered all of my questions, put up with me watching and learning, took meticulous notes, was very friendly, fixed plugged drain line, completed all maintenance and went over all maintenance plans that were offered. He was very thorough and I would highly recommend him and his company. They are very reasonably priced too.

James is seriously one of the best at what he does very fair and honest. Very hard to find these days and doesn't try to sell things that aren't needed. I know very little about home Ac units and everything was explained to where I could understand what was going on. Customer service was amazing. Thank you Just Air for not just wanting my money and caring about my family.

Over the past 20+ years, Scottsdale Air has done a number of jobs, both big and small, for us. From replacing our air conditioner to annual tune-ups, all work has been done on time at a fair price.
The folks at Scottsdale Air, are skilled professionals who provide a personal, neighborly touch to their customer interactions. Due to my husband’s health, a recent AC repair (on a hot, July day) was especially urgent. Even though late July is the high season for AC repairs and their schedule was very busy, the caring, competent employees at Scottsdale Air made sure the repair was done quickly.
Thank you, Scottsdale Air!

These guys are awesome, very honest and good prices for the parts and labor. They were very helpful with me today replacing a blower motor that was under warranty. Matt did a great job replacing the bad motor first thing in the morning. I appreciate their good attitude, helpfulness and backing up the products they use. Thanks again and I will pass your name to my friends and family that are ever in need of a good air conditioning company

Went well, on time, neat clean, very professional.

I had to have my Thermostats moved to make room for some sliding barn doors. Reeis came and did the job quick and easy for me and best of all for a great price! I would highly recommend them for anyone that needs a similar service.

Great Ma and Pa company!

Excellent place to do business. Very honest and professional.

The technician was able to point out the problem with my shower leak and the replacement cartridge we purchased was incorrect. I was unable to continue with the service due to costs but he was great. Easy to talk too, friendly and knowledgeable.