
HVAC & Plumbing in Mesa, AZ
Proudly Serving the Valley
Donley A/C & Plumbing has provided expert plumbing, AC, and heating services in Mesa since 1976. We serve both residential and commercial customers with long-lasting, energy-efficient solutions. You can count on us for comprehensive service, including 24/7 emergency service. If it’s time to resolve a leak, replace a heating system, or repair an AC unit, choose Donley A/C & Plumbing for exceptional service.
Contact our team today to schedule plumbing, AC, or heating services in Mesa, AZ.


How Can We Help You?

HVAC Services
A common mistake homeowners make is not worrying about their HVAC systems until there’s a problem. You can enjoy reliable heating and cooling year-round through routine HVAC maintenance and prompt repairs. We service and install central air conditioners, heat pumps, furnaces, ductless mini-splits, and more.
Air Conditioning
When temperatures rise in Mesa, AZ, Donley A/C & Plumbing will be ready to handle your cooling needs. We offer these AC services in Mesa:
- AC repair: We can fix your air conditioner, whether the issue is minor or complex.
- AC maintenance: Schedule an annual AC tune-up to extend your system’s lifespan and improve performance.
- AC installation and replacement: Rely on our experts to install or replace your cooling system.

Comfort You Can Count On. Service You'll Want to Share.
We Do It Right, Guaranteed.
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“We contacted Donnelly for on after hours emergency plumbing issue. Eric was a true professional! He was thorough and explained his findings in layman’s terms putting our minds at ease.”- Kathy G.
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“We’ve used Donley Services for 7 years and found them to be responsive, thorough, and never pushy about buying unneeded products or services. It’s hard to find reliable service techs. Look no further.”- Peter T.
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“Seth was so helpful. He listened to my concerns and replaced my disposal with 30-40 minutes. We have been using Donley for years and will continue to be lifelong customers.”- Virginia H.
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“Jose was very professional and friendly. He discussed what he would do, and when the job was done, he went over his findings and asked if there was anything else he could do for us.”- Kevin P.
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“We are so happy with Donley and the new AC they just installed. Chris and his team were so quick, thorough and courteous. Chris took the time to help us get the new thermostat registered online and working. He was extremely patient!”- Linda G.
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“We have used Donley Service for over 30 yrs. You will not find a better or more honest company. For our recent service, a big shout out to Daniel. Great work and so pleasant. Use Donley you will never regret it.”- Lindsey Y.
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“Arrived on time, called ahead, explained possible costs up front, and then fixed the issue quickly. Great service and knowledgeable technician. Friendly and respectful.”- Jodi R.
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“Air conditioner installation went very well, guys were pleasant. Got the job done efficiently even on an extremely hot day. Very pleased with Donley. They do what they say and deliver a good product. We are happy that our home is finally cool.”- Kathy S.
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“The technician who responded to my inquiry, Sean, was extremely personable and professional. He was timely in his arrival and honest. He explained all the work that needed to be done.”- Arthur G.
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“I have been with Donley for over 25 years. They offer professional services from the office staff to the technicians. Their prices are more than fair. They are trustworthy and honest. Wonderful people to work with.”- Sharon F.
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“Josh Jimenez is about the best plumber we've ever had, and we have lived in a lot of homes. He is a great listener, thinker and doer. He solved our concerns quickly and with follow through.”- Katherine W.
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“- Misty M.
They come out promptly and fix the problem. They do not overcharge extremely fair with their prices. I have had one unit replaced and no issues since 2022 and I’m going to have a second unit replaced.
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Why Choose Us?
Donley A/C & Plumbing serves homeowners and businesses throughout Mesa and surrounding areas, and we’ve been doing it for over four decades. We’re reliable experts who pride ourselves on honest and timely service you can count on. Our team is well-established in the community and takes an active role in local charities. We offer appointments Monday through Sunday and are available 24/7 for emergencies. Our company also provides no-obligation second opinions, free installation quotes, and flexible financing options subject to credit approval.
Request an appointment online or call Donley A/C & Plumbing today.
