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Desert Diamond Mechanical Heating & Air Conditioning
Desert Diamond Mechanical Heating & Air Conditioning is the right choice for ideal and affordable home comfort solutions in Phoenix, AZ. We aim to earn your total satisfaction through superior services and products.

From custom design, installation, maintenance, and repair of Air Conditioning Systems, to Aeroseal Duct Sealing, Heating Service, and Home Energy Audits, our dedicated technicians ensure the health, enjoyment, and condition of your home, year-round.We are a qualified Trane Comfort Specialist, and dealer of both Trane and Rheem products.

Call on the specialists from Desert Diamond Mechanical Heating & Air Conditioning at (602) 362-4599 for honest answers, cost-effective solutions, and sustainable results Valleywide, including Phoenix, Scottsdale, Peoria, Glendale, Sun City, & Surprise, AZ. In order to provide lasting cooling in your home, your A/C system needs regular maintenance.
Services
You can depend on Desert Diamond Mechanical Heating & Cooling of Phoenix, Arizona for your home or business's HVAC needs. Contact us at any time for information about our HVAC services or to schedule an appointment. We provide heating and cooling services in Phoenix and surrounding communities, including Glendale, Sun City, Goodyear, Carefree, and Peoria.
Last year, our company along with two local partners came together to donate and install a new Trane unit to a Mesa resident in need. Continuing in this tradition, we have chosen the Arizona Small Dog Rescue to receive a new unit, labor, and sheet metal at no cost.
Desert Diamond is a Phoenix-based HVAC company serving home and business owners Valleywide. We provide a range of heating and air conditioning solutions, including installation, maintenance, and repair. Our team of certified technicians is available 24 hours a day for emergency service. Contact us today for energy audits, air conditioning service, and heating service in the Phoenix area.
Through Wells Fargo Bank, N.A., participating dealers offer several flexible options for financing your new product or system, with approved credit. That way you can invest in your home's comfort or respond to an unexpected heating and cooling need without breaking your budget. Plus, by taking advantage of financing, you won't use up your existing funding sources, like a home equity line of credit, other credit cards, or bank account.
Is your air conditioner or heat pump more than 10 years old? If you're planning to replace your existing system, you could be eligible for $200 in rebates. Just have a Participating Contractor replace your old system with a new, energy-efficient system installed in accordance with the APS Quality Installation Standards.
Reviews (10)
John Gulick
John Gulick
Jan 29, 2022
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Ivan arrived for my service call early and he explained everything in detail. He also went over warranty items on my unit that I was not aware of, saving me hundreds of dollars in repair costs. I am very pleased with Desert Diamond! As a new customer, I have them set for my next annual service. They are certified experts and will give you the best recommendation on repairs or replacement. Do yourself a favor, hire the best HVAC techs’ in the valley to work on your system!
Desirae Crespo
Desirae Crespo
Jan 17, 2022
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Steve from Desert Diamond came out to measure for a new A/C unit. He was friendly and professional. The reason I am leaving a 3 is because he added about an extra $400 to the initial quote. While its not much compared to the $13,000 unit I am having put in, it still makes me leery of signing a contract with DDM. The contract clearly states that I am liable for any and all necessary and unforeseen costs needed to complete the install. If they are going to add $400 here and $400 dollars there, who knows how much I will end up paying in the end. I am still on the fence about hiring them and am looking
Dennis R. Remillard
Dennis R. Remillard
Jan 15, 2022
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I am so greatfull to the company for their professional and speedy service. It has been 3 time prior for checking and repairing our unit. It was old and again I called and they were there same day. This time the unit needs replacing. They also made that affordable and quick to replace. I love this company and their professional technicians. They deserve a big pat on the back for great service!
Christina Thiel
Christina Thiel
Jan 04, 2022
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We called on Christmas Eve about a leak and they were here within 30 minutes!!! Joe was so friendly and helpful, he went above and beyond!
We always have a wonderful experience with this company and anyone who services our air conditioner. Highly recommend them, you won't be disappointed!!
Dan McIntyre
Dan McIntyre
Dec 23, 2021
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I've been doing business with Desert Diamond for nearly 20 years, when it was just Carlo doing it all. They are very professional and I've never had any issues with them trying to upsell me on something not critically needed. I just had my semi-annual PM service and the tech was Cody. All of the techs are great but I am always impressed with Cody, he goes above and beyond and takes the time to explain what he saw and shows me pictures to back up what he says. He is friendly, personable, and knowledgeable. With employees like Cody on staff I will continue to do business with Desert Diamond.
Jodi Crouch
Jodi Crouch
Dec 19, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
This was an AWESOME AMAZING experience using Desert Diamond. The guys were personable, funny, professional and extremely knowledgeable! From the very beginning with inspection, measurements, scheduling to installation. I would definitely recommend. Great crew! Thank you for your services and crew!
Services: Duct and vent cleaning, Heating system installation, AC installation
Vivian Dore
Vivian Dore
Dec 19, 2021
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The gentleman they sent out, Joe, was very professional and knowledgeable. We absolutely loved the way he spoke with us and made sure we understood what he was doing. We were totally disappointed with the last service company that we had so we're already on guard. Joe put us at ease immediately and followed through with kindness and respect. A GEM in today's world. Thank you for employing such an honest person.
Carlie Morris
Carlie Morris
Dec 19, 2021
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Steve was fantastic! Desert Diamond Mechanical never disappoints. I called in the morning, needing service and they were able to get me up and running the same day. Super friendly and very knowledgeable. Thank you Desert Diamond! 5 stars all around!
Jane Flach
Jane Flach
Dec 14, 2021
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Very pleased with this company especially Cody who was the one that originally came out to give me an estimate on cost to replace my 2 AC/ Heat systems. Very personable and honest young man. Scheduled the work within a couple days of accepting their estimate. The workers came on time and finished the entire job the same day by mid afternoon. Hopefully everything will work as it should. Very pleased with Cody stopping by while his workers were installing system and answering any questions I had.
Mindy Nethery
Mindy Nethery
Nov 23, 2021
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We've had a maintenance plan with Desert Diamond for a few years, and they've always been fantastic. Just completed our winter maintenance, and Joe was great! He was super knowledgeable and nice! He made sure to mention a few things to keep an eye on so we keep our system running and in good condition. Their team is always on time and has never missed an appointment. I would highly recommend this company to anyone looking for reliable a/c service!