We maintain, repair and replace all brands of air conditioning systems

D&H AC provides Tucson homes and businesses with air conditioning repair, A/C maintenance and A/C installation services since 1959. Our NATE-certified technicians are trained to repair air conditioning systems of any brand and any age, in a rush and all year long.

When your system needs repair, we can perform an audit of what went wrong so that the true cause of the failure be accurately detected and fixed. This saves you money from further repairs.

If you call us to enquire about a new A/C installation, we will automatically perform an audit of your current air conditioning system and its usage: this will allow us to determine with you what AC system is best-suited to your needs over 3, 5, 10 and 12 years.

Lastly, we provide top air conditioning maintenance services with NATE-certified technicians and the Daikin Comfort Pro (TM) ultra-selective label.

When it’s time for heating and heaters…

We don’t often think about furnace and heater maintenance and installation in Southern Arizona because they are minimally used most of the year. If you already have endured a local winter however, then you know that freezing occurs and optimum furnace and heater operation is essential.

Our NATE-certified technicians are highly trained on the many differing types/brands of heater and furnace equipment. Whether your furnace is brand-new or forty-five years old, our team will use all its knowledge and experience to help increase its longevity.

If it is time to replace your unit, ask our service technicians or Comfort Advisors about possible lifetime warranties on heat exchangers. Click here to find out more about our gas heating furnaces.

Guardian Air Conditioning Maintenance Plan

Click on the logo to see the full benefits!

Our air conditioning maintenance plan, GUARDIAN, makes a lot of “dollar sense”.

GUARDIAN detects issues BEFORE they occur. It prevents failures by replacing parts to keep your air conditioning system at 100% performance all the time.

GUARDIAN avoids costly bills, prevents system failures and lowers your air conditioning cost. Call us to help prevent system failures: (520) 408-2665.

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We always strive for improvement and we also appreciate praise. Reviews are your voice to tell us how we did. Please take a moment to cast your vote on any one of these four websites…

Hundreds of positive reviews at the Better Business Bureau, 4.7 stars in Google, 4.9 stars in Facebook, 4.5 stars in Yelp… For 58 years we have made our customers our PRIORITY #1 day after day. We don’t just talk a good game.





Keep your unit tuned up! Prevent costly repairs with proper maintenance. Having the proper maintenance plan also ensures preservation of your manufacturer’s warranty.

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Our technicians can fix the problem. Regardless of when your unit was installed and who installed it. All our technicians are NATE certified, the highest level of qualification in our industry.

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Tired of being nickel-and-dimed by your old A/C unit? When you call for your free in-home estimate, ask about our 12-year financing, 12-year equipment warranties. Or about our ‘no-payment, no-interest for 18 months’ plan.

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We are dedicated to providing our customers with outstanding service and expertise. We value our customers’ opinions to know when our processes are working properly and as learning experiences to improve when necessary.

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Receive up to $2000 in discounts and rebates toward the purchase and installation of a new Premier Home Comfort System!

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Brett Wright, President


years in business


satisfied clients


technicians on call



Daikin AC unit repair - Surge protectors save money

Inspection & Repair of a Daikin A/C Unit – Surge Protectors Save You Money

  In this real-time inspection video, our Service Professional shows you what parts need to be replaced in this Daikin AC unit, and discusses the importance of surge protectors for the validity of your air-conditioning unit warranty. He also shows you another system that will save you a lot of money by helping the compressor…


Daikin AC unit - Clean-up after inspection and repair

Final clean-up inspection after repair of a Daikin A/C unit

Clean-up inspection time: In this real-time video inspection and repair of a Daikin air conditioning unit, our Service Professional makes sure that the work area and the unit are clean before he leaves the roof. Cleaning up is the last step of an air conditioning maintenance and repair intervention: leaving a unit clean and a site in…


Diagnostic of a failing air conditioning unit – Part II – D&HAC

This A16 year-old A/C unit was failing. The homeowner called D&HAC to perform a diagnostic of the issues. Our Comfort Pro Specialist Jacob G is showing in this video how he proceeds with the diagnostic and remedies the critical issues he found from the get-go. He also covers some of the recommendations D&HAC will make to the homeowners.


Diagnostic of a failing air conditioning unit – Part V – D&HAC

Back on the roof of the home in which our super-technician Jacob G is performing a deep diagnostic of the issues plaguing an A/C unit that seized up. This video is the end of the series. The A/C unit has been repaired, and a few additional part changes will be recommended to the homeowners.



Air Conditioning Maintenance, Repair and Installation Experts in Tucson Since 1959


D&H Air Conditioning & Heating
AC repair, maintenance and installation

3629 N Oracle Road
Tucson, AZ 85705

Phone: 5204082665
Fax: 5208876204

Office Hours of Operation:

Mon – Fri :
8:00 AM – 5:00 PM

Sat :
8:00 AM – 2:00 PM

Service Hours :
Mon – Sun : 24 hours

AZ ROC# C-79 #070188 / C-39 #076494


Free estimates:
reception [at] dandhac.com

Service Requests:
service [at] dandhac.com

Service Manager:
servicemgr [at] dandhac.com

General information:
reception [at] dandhac.com

Our NATE-certified air conditioning technicians serve homes and businesses in the following cities: Tucson, Casas Adobes, Oro Valley, Marana, Vail, Green Valley, Saddlebrooke, Tubac, Sahuarita, Benson, Catalina, Oracle, San Manuel, Mammoth, Rio Rico, Nogales, Sonoita, Patagonia, Huachuca City, Sierra Vista, Tombstone, Eloy, Arizona City, Casa Grande, Florence and communities in-between.

Our A/C maintenance programs are designed to ensure your manufacturer’s warranties are preserved and your air conditioning system runs efficiently.

Our service technicians are North American Technician Excellence (NATE) certified. This certification gives you access to service technicians with verifiable knowledge of air conditioning, air distribution, heat pumps, gas heating, oil heating, hydronics gas, hydronics oil, light commercial refrigeration and commercial refrigeration.

The professionalism of our technicians is continuously developed through training programs focusing on customer service.

Our commitment to client service, professional training and quality control procedures has been a cornerstone of the success D&H Air Conditioning has enjoyed in Tucson and Southern Arizona for over 58 years.