D&H AC is rated by Angie’s List among the very best HVAC companies in Tucson.
PLEASE CALL (520) 408-2665. Use this coupon for a discounted rate if your unit has not be tuned-up yet.

D&H Rated among Best HVAC Companies Tucson - Angie's List Super Service Award 2019
If you need more detailed information about the savings offered under our Guardian Plan for air conditioning service and systems check, please let us know by using this short form. A Certified Technician will contact you within 24 hours.

Preferred hours to call you:Betweenand

Air Conditioning Service & HVAC System Check

Air conditioning service the correct way

Our Guardian Plan extends the life of your equipment and reduces your operating costs and repairs. Our air conditioning service plans are available on your new HVAC system or existing equipment regardless of the brand or who installed it.  Even if we did not install your system, you can still call D&H Air Conditioning hotline at (520) 408-2665 and request a technical evaluation under our Guardian Plan for your specific installation. 

Regular 360° air conditioning service prevents breaking the bank

The #1 cause of HVAC system breakdowns is a deficiency in air conditioning service.

Regardless of the age, brand or even who installed your existing equipment, keeping it serviced to fctory specifications saves you money. In fact, HVAC manufacturers require planned maintenance to validate and preserve their equipment warranties. The good news is it’s never too late (or too soon) to start a proper A/C service plan.

When you sign up for our Guardian Plan, our air conditioning service and system check program, this is what you receive:

  • Expert service
  • ‘Front of Line’ priority
  • Preferential scheduling
  • Discounts on service calls
  • Extended repair guarantees
  • …And much more!

Click on the GUARDIAN PLAN icon to see more details

The Guardian Plan is one of the reasons D&H AC
ranks among the very best HVAC contractors in Tucson.

Experience pays off for you

With an experience of almost 60 years in installing, servicing and replacing HVAC systems in the greater Tucson area, we can safely say we have seen absolutely ALL sorts of issues with air conditioning systems. Our very extensive experience gives us a leading edge and ranks D&H AC among the very best HVAC companies in Tucson. Our Angie’s List Super Service Award of 2019 is a testimony to the quality of service we provide our customers.

Any part of an HVAC system can break and create problems for other parts, starting cascading issues that usually wind up with very costly repairs.

As years went by, air conditioning manufacturers have started to limit their warranties because of cascading issues: a badly serviced system triggers problems in another system and another system, etc. In the end, HVAC manufacturers were forced to change entire systems for issues that could have been dealt with very easily from the get-go. Planned air conditioning service and system check is the antidote for cascading issues: when an A/C system does not operate optimally in any compartment, planned service and failure detection systems isolate critical issues before they contaminate other parts of the system and become extremely costly to repair. HVAC brands such as Daikin publish maintenance guidelines that are very useful.

The latest generation of air conditioning systems give advance warnings of possible system failures and transmit these warnings to a central monitoring system. This enables HVAC companies like D&H to be alerted early of a malfunction or the sub-par operation of a sub-system, and to intervene early enough to avoid catastrophic failures outside of warranty clauses.

The difference between a well-maintained air conditioning system within a thorough planned service program (like our Guardian Plan) and a badly maintained system is the cost for the owner. Most manufacturers (if not all of them) will NOT cover warranty repairs due to a lack of preventative maintenance. In such a case, homeowners may have to foot a bill that can reach into the thousands of dollars. In commercial and industrial HVAC installations, these cost will mount up very quickly. Daikin knows this and offers HVAC service and system check plans through approved Daikin Comfort Advisors like D&H Air Conditioning.

It just makes “dollar sense” to equip yourself with a great air conditioning service plan that is thorough enough to detect the issues BEFORE they occur, and prevent them by replacing parts that are becoming too worn out to fulfill their function at a 100% performance level. Our Guardian Plan prevents those costly bills and complete system failures by assuring you of 360° inspections through the year, replacement of parts before they fail, and an overall great level of performance to lower your air conditioning bills.


Call our hotline today at (520) 408-2665 or use the appointment form above to inquire about our low monthly system check program for easy budget planning.

D&H Worry-Free Service and System Check is available for both new purchases and an existing system! Save big $$ with our low-cost service program. There is a reason why we are consistently voted among the best HVAC companies in Tucson. The Angie’s List Super Service Awards rewards HVAC specialists whose quality and reliability of service is acknowledged by Tucsonans. It takes serious work, training, processes and dedication to earn the coveted badge and rank among the best HVAC companies in Tucson.

D&H AC offers air conditioning services in all areas of Tucson metro

La Paloma Tucson 85718 - Air Conditioning serviceTowards the top of sunrise, in the beautiful La Paloma gated community, in the 85718 zip. A very unusual repair today!

Our client has a Goodman split heat pump, and it stopped working. Tracing back the problem, we found that the suction line had been damaged by a lawn maintenance device. The equipment… More about air conditioning service in the AZ 85718 area…






Air conditioning service on Circulo Bujia Tucson 85718

Air conditioning service on Circulo Bujia 85718 – Image courtesy of Google Maps

A service call to the Catalina Foothills, on Circulo Bujia, near N Pontatoc Rd.

Beautiful home, and a great A/C unit manufactured by Daikin. The maintenance call was not effected under D&H’s Guardian Planned Maintenance program, so we made sure all systems were go. We checked the… More about air conditioning service in the Catalina Foothills





tangerine heights 2 - Google Maps

Tangerine heights – Photo courtesy of Google Maps

A service call in Tangerine Heights, 85755

We performed maintenance on 2 HVAC units. One was a Daikin gas split and the other, a Daikin non-gas split.

Upon arrival customer let us know about an alert on his main house thermostat. It was a code for the outdoor temperature sensor error. When doing maintenance on that unit, we found that a sensor connector… More about air conditioning service in Tangerine Heights