Dependable Service When You Need It Most
What Can We Help You With Today?
Comprehensive Heating Services in Phoenix & Surrounding Areas
The desert's extreme temperature swings, hot days and chilly nights, can put extra strain on your system, while dust buildup and dry air can impact efficiency and indoor air quality. Whether you need new furnace installation, heating repairs, or seasonal maintenance, we provide reliable solutions tailored to the needs of your home or business.
Heating Repair: Diagnosing & Fixing Common Issues
When your heater isn’t working properly, timely repairs can prevent bigger problems and keep your space comfortable.
Our team is available seven days a week to diagnose and fix a range of heating issues, including:
- Uneven heating or cold spots. If some rooms stay cold while others get too warm, there could be duct leaks, airflow restrictions, or thermostat malfunctions. We assess your system, check for blockages, and offer solutions like duct sealing or thermostat adjustments to help restore balanced heating.
Heating Maintenance: Keep Your System Running Efficiently
Even in Phoenix’s mild winters, a neglected heating system can develop issues that lead to unexpected breakdowns or high energy bills. Donley A/C and Plumbing provides thorough heating maintenance services to help customers get the most out of their systems.
Our maintenance services include:
- Full system inspections. Our team checks all major components, including burners, heat exchangers, motors, and electrical connections, looking for any signs of wear or potential problems before they lead to costly repairs.
- Filter replacements and cleaning. Dirty air filters restrict airflow, making your system work harder than it should. Regular filter changes help maintain efficiency, improve indoor air quality, and prevent unnecessary strain on your heater.
- Thermostat calibration. A thermostat that isn’t reading temperatures correctly can cause inconsistent heating and energy waste. Adjusting and testing the thermostat helps maintain a comfortable indoor temperature while avoiding overuse.
- Safety checks. Gas furnaces and heat pumps have components that need regular inspections to identify potential hazards like gas leaks, carbon monoxide risks, or electrical issues. Our team performs safety checks to keep heating systems running securely.
With 2,800 customers enrolled in maintenance agreements, Donley A/C and Plumbing has a long history of helping Valley homeowners keep their heating systems reliable and efficient throughout the winter.
-
“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.
-
“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.
” -
“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.
-
“Isidro was fantastic. Evaluated the problem, gave an estimate and the job was completely in a timely manner. He was very polite and verified which type of valve we wanted before installation. We will call Donley for any future services needed.”- Margie S.
-
“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.
-
“What can I say to convey the great service I received. Quick, efficient, and personable. Have had no problems since it was installed.”- Mel P.
-
“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.
-
“- 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.
”
-
49+ Years Industry ExperienceSince 1976, we have provided the valley with responsive, dependable, and caring service.
-
Customer-Focused ServiceWe treat your home like it’s our own.
-
Expert TeamSkilled professionals trained to handle any HVAC or plumbing issue.
-
We Do It Right, GuaranteedOur work isn’t done until you’re completely happy.
Why Choose Us for Heating Services?
- Serving the Valley since 1976. As a trusted, family-run business, we’ve spent decades helping local homeowners and businesses stay comfortable through Arizona’s seasonal temperature changes.
- Service 7 days a week. Heating issues don’t always happen at convenient times, which is why we’re available seven days a week and offer same-day appointments for urgent repairs and maintenance—so you’re never left in the cold.
- Honest pricing and financing options. We provide upfront estimates with no hidden fees, so you know exactly what to expect before any work begins. We also offer financing options to help make repairs and replacements more manageable, so you can stay warm without financial stress.
- Licensed and insured. Our team is fully licensed and insured, so you can trust that we’re qualified to handle all your heating needs safely and professionally.
- 4.9-Star google rating. Our long history of customer satisfaction is reflected in thousands of positive reviews from homeowners and businesses who trust our services.
- Se habla español. We’re proud to serve more members of the community by offering bilingual service, making it easier for Spanish-speaking homeowners to get the help they need.
With a fleet of 49 service trucks on the road, our team is equipped to handle heating repairs, installations, and maintenance promptly and professionally across Phoenix, Scottsdale, Mesa, Glendale, Chandler, and Gilbert.
Whether you need repairs, a new heating system, or maintenance, our team is here to help.
Contact us today at (602) 698-8912 or online to schedule an appointment.
Phoenix, AZ 85029 Map & Directions