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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.
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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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“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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“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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“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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“Thank you for the service and troubleshooting on our HVAC system today. It's refreshing to deal with an AC company that has qualified and honest techs like Juan B. - we will always request him in the future.”- Robin 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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“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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“I can't say enough about the amazing professionalism and help that I received when my AC unit needed to be replaced. Everyone was kind and took the time to answer many questions. They were honest, punctual, and knowledgeable.”- Linda W.
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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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49+ Years Industry ExperienceSince 1976, we have provided the valley with responsive, dependable, and caring service.
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Customer-Focused ServiceWe treat your home like it’s our own.
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Expert TeamSkilled professionals trained to handle any HVAC or plumbing issue.
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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