
HVAC & Plumbing Services in Surprise, AZ
Valley-Wide Service | 7 Days A Week
Donley A/C & Plumbing has served homeowners and businesses in Surprise, AZ, and the rest of the Phoenix metro area since 1976. Our technicians and plumbers are available for new installations, including conversions, maintenance, and repairs, and respond seven days a week.
Our team can help you choose energy- and water-efficient solutions that will save you money while lowering your environmental impact. We can also help you keep that equipment in great condition over the years.


How Can We Help You?

Energy-Efficient HVAC Solutions
One of the easiest ways homeowners in Surprise can reduce their energy consumption is with a programmable or smart thermostat. The U.S. Department of Energy (DOE) estimates that the average home can lower its heating and cooling bills by as much as 10% by scheduling.
Increase or decrease your temperature setting while you’re asleep or away. Smart thermostats have Wi-Fi capability for remote access and control, and they can have a wide range of additional features, including:
- Geofencing
- Vacation mode
- Adaptive learning
- Energy monitoring
- Maintenance alerts

Comfort You Can Count On. Service You'll Want to Share.
We Do It Right, Guaranteed.
-
“Seth was very clear in explaining how he would fix our outdoor faucets, the reverse osmosis system and the cost to do so! Seth was on time and completed the work quickly and efficiently!”- Pat E.
-
“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.
-
“- 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.
” -
“Donley is the best! Came out after hours on a Friday to fix our AC. Milad was very knowledgeable and was able to make the necessary repairs quickly.”- Erin R.
-
“Donley provided expert advice at a price thousands less than another company. Sean was great, respectful and did a great job for us. Highly recommend this company.”- Kimberly B.
-
“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.
-
“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.
-
“- Dennis C.
The whole crew did an excellent job. They were very prompt, the install was clean and obviously effective as the house immediately began to cool. Derrick managed the process very well and kept me updated on the progress.
” -
“If you are looking for someone who does high-quality work at very reasonable price Donnelly, AC and plumbing is the way to go! Jose Felix did a kick ass job. He checked everything and fixed it as he went that that he found.”- Glenn G.
-
“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.
-
“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.
-
“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.
Why Choose Us?
Homeowners and businesses throughout Surprise and surrounding areas have trusted Donley A/C & Plumbing for over 49 years. You can count on our plumbers and heating and cooling technicians for professional advice and superior work. We offer maintenance agreements that offer our customers great value. Our company provides upfront pricing and financing on approved credit. We also back all our work with a workmanship guarantee and a 100% customer satisfaction guarantee.
Need HVAC and plumbing services in Surprise? Contact Donley A/C & Plumbing to schedule your service with us today.
