Desert Diamond Air Cooling & Heating

In Desert Diamond Air Cooling & Heating's own words

Desert Diamond Air & Plumbing is locally owned and operated in Phoenix, AZ. Contact us for expert HVAC or plumbing service, repair and installation, or schedule an appointment for a certified home performance energy audit. Emergency service is also available in the event of a plumbing emergency or AC, heating system break down. Call today!

Trade

HVAC contractor

Business address

16602 N 25th Ave, Phoenix, AZ 85023

Telephone

(623) 246-2377

Website

desertdiamondhvac.com

Hours

• MondayOpen 24 Hours
• TuesdayOpen 24 Hours
• WednesdayOpen 24 Hours
• ThursdayOpen 24 Hours
• FridayOpen 24 Hours
• SaturdayOpen 24 Hours
• SundayOpen 24 Hours

From the business's Google listing, checked Oct 2026

Register

AZ register

Recorded as supplied and as found in public sources. This register makes no credential or quality claim about any business; check license status with the state board.

Google Reviews

4.9 ★★★★★ (2525)

• Ian was professional went through all the checks. Provided all information and showed what the issue causing the problem was . Showed how an upgrade to the tank drain would be benificial in the future and the company specifically Dakota worked out a little better price to fit my budget. Trustworthy company.

  rob P.★★★★★

• Man, these guys were great. Super responsive, and fixed my unit. Timothy was the tech that worked on my unit. He was friendly, personable, and professional, fixed the problem, and addressed all my questions.

  Kathy R.★★★★★

• Eddie did a great job for us today! He was quick efficient and explained everything. Ralph

  Ralph M.★★★★★

• Very informative & patient to answer all my questions. Highly recommend

  Julie V.★★★★★

• Tristin showed up on time and did a great job.

  John Z.★★★★★

• I purchased a brand-new multi-stage air-conditioning system from Desert Diamond Air in May 2026 for approximately $14,000, expecting improved efficiency and reliability compared with the 21-year-old system it replaced. Unfortunately, my experience has been the opposite. Since the installation, my electric bills have been approximately 40% higher—and during the hottest months, nearly double what I was paying during the comparable period last summer. Because I have solar, I contacted APS to verify that my solar system was producing normally. I also had my solar panels professionally cleaned. There was no issue with my solar production. The only significant change was the installation of this new air-conditioning system. I recently had a technician come out because the system was not operating properly. During that visit, I was informed that the wiring from my house to the outdoor unit had failed. A temporary repair was made, and I was told that Desert Diamond could provide a bid if I wanted them to permanently rewire it. More concerning, the technician also discovered that the new multi-stage system had not been properly configured at installation. It had been left operating on a single stage at 100% velocity, rather than being properly configured to utilize the multi-stage functionality I paid for. This is particularly frustrating because I specifically raised concerns about the system shortly after installation. During the post-installation inspection, I told the technician that the unit was extremely loud—significantly louder than my 21-year-old system—and that when it kicked on, the entire house would noticeably shake. I was assured that there was nothing wrong and that the increased noise was simply because the new system was getting better airflow. I have since spoken with other HVAC professionals and researched the issue extensively. Based on that information, I am extremely concerned that operating a multi-stage system at 100% velocity rather than properly utilizing its staged operation can substantially affect its efficiency and energy consumption. I contacted Desert Diamond Air and asked whether the company would take some responsibility for the situation, particularly given the substantial increase in my electric bills following the installation. I was essentially told that the setting had no meaningful impact on my energy usage. I strongly disagree with that assessment, particularly given what was discovered during the recent service visit. The issue here is not simply that something went wrong with a new air conditioner. Equipment can fail. The issue is that a $14,000 system appears to have been improperly configured from the beginning, I raised concerns about its abnormal operation shortly after installation, those concerns were dismissed, and I subsequently experienced significantly higher energy costs. I estimate that this mistake has cost me approximately $800 in additional electricity expenses during the hottest months of summer, on top of the $14,000 I spent for a system that was supposed to be more efficient than the one it replaced. What is most disappointing is the company’s unwillingness to acknowledge the problem or make a reasonable effort to address the financial impact of an installation/configuration issue that was ultimately discovered by their own technician. A company earns trust not when everything goes perfectly, but in how it responds when something goes wrong. In my experience, Desert Diamond Air has not demonstrated that accountability. I cannot recommend this company based on my experience.

  Naydine R.★★★★★

• I called at 450pm and someone was at my house by 715pm. Phillip was professional, polite, helpful and funny. This is my first time using Desert Diamond A/C and I won't hesitate to call them again. Thank you Phillip!!

  Linda L.★★★★★

• Adam did an amazing job with my A/C units’s routine seasonal servicing today. Just like the wonderful previous technicians from Desert Diamond Air, he arrived right on time, was extremely polite, and treated my home with respect by keeping everything clean. He thoroughly inspected the system, gave it a complete tune-up, and explained exactly what he did to ensure it runs smoothly all season long. Adam is honest, professional, and highly knowledgeable. I will definitely continue to trust this team for my future seasonal maintenance—highly recommended!

  Sonya L.★★★★★

• Dakota was awesome! He is a great asset to your company. 😊 Very friendly, great communicator, knowledgeable, all around great guy. Really took the time to make sure everything was okay today for our next round of hot summer here in Arizona. I would definitely recommend him! We will definitely ask for him next time around! I'm so glad I found a great company that is honest and easy to work with. The staff is also very friendly and helpful 🙂 June 6th 2024, since Dakota has now moved into another position, we were recommended Nixa. She next came out today for my mother's unit. Very nice, professional, and knowledgeable. I was very confident with her expertise! Did a great job 👍 thank you very much Nixa for your great customer service. Desert Diamond Air is awesome. I keep referring people to your company for the awesome customer service. Keep up the great work! 😁

  Bianca A.★★★★★

• Sam was really great! Very informative and took his time to make sure I understood everything. 10/10 would recommend

  Jenifer L.★★★★★

Read all reviews on Google

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About Phoenix

Sources: U.S. Census Bureau. NOAA U.S. Climate Normals 1991-2020.