Heating Repair
Heating Repair in Scottsdale & Phoenix.
Heat pumps, gas packs, and furnaces. Diagnosed on the first visit, priced in writing before we start.
Heating repair across Scottsdale and the Phoenix area. Every visit starts with a full diagnosis, and you get the total cost in writing on site, before we touch anything. Built on over 50 years of Arizona HVAC experience.
- Avg. 30 Years Technician Experience
- Licensed, Bonded & Insured
- Est. 1975
- Locally Owned & Operated
Heating Repair in Scottsdale & Phoenix Since 1975
Phoenix heating sits idle eight months a year, then gets asked to work on the first cold morning in December. That is when a weak igniter, a stuck reversing valve, or a dusty flame sensor finally shows itself. Most Valley homes heat with a heat pump or a gas pack on the roof, and both have their own short list of failures. We know that list. Maricopa Air has repaired residential and commercial systems across the Valley since 1975.
Maricopa Air
How Repair Pricing Works
Every repair starts with a full diagnostic visit. You get the fault, the total cost, and your options in writing before any work starts.
What we quote on site is what you pay. No “we found something” calls from the roof. No three-day-later quote by email.
Repairs and replacements can be financed through Wisetack on qualifying projects. See financing options →
our process
What Happens on a Service Call
Two-hour arrival window
We text when the tech is on the way.
Diagnostic walk
Thermostat and call for heat, electrical, ignition sequence or heat pump defrost cycle, refrigerant pressures on heat pumps, backup heat strips, blower, filter, and airflow. We check the whole system, even after we find the first problem.
The fault, the cost, your options
Written on the spot.
The repair
Done that visit when we can. Most igniters, flame sensors, capacitors, and control parts are on the truck.
Verification
We run a full heating cycle and measure supply temperature before we leave. You see the numbers.
While you wait for the tech: If you smell gas, leave the house and call Southwest Gas from outside, then call us. If you smell burning plastic or see smoke, shut the system off at the breaker. A faint dusty smell the first time the heat runs each year is normal and usually clears within an hour.
trusted
Common Heating Failures in Phoenix Homes, and What They Mean
Most Valley homes heat one of two ways: a heat pump, the same unit that cools in summer run in reverse, or a gas pack, a rooftop or side-yard package unit with a small gas furnace built in. Here is what fails on each. For the full rundown on heat pumps, including summer problems, see Heat Pump Repair in Scottsdale & Phoenix →
Heat pump: reversing valve stuck in cooling.
Symptom: the system runs on the heat setting but blows cool air. Sometimes it is a failed solenoid coil, which is a quick fix. Sometimes it is the valve itself.
Heat pump: defrost control or sensor failure.
In cold, damp weather the outdoor coil frosts over, and the unit should defrost itself every so often. If the board or sensor fails, the coil ices solid and heat output drops off.
Heat pump: backup heat strips or sequencer out.
The electric backup heat that helps on the coldest mornings. Symptom: the house never quite reaches temperature on cold nights, or “AUX” or “EM HEAT” is lit and the electric bill jumps.
Heat pump: low refrigerant from a leak.
A heat pump that cools weakly in summer will heat weakly in winter. We find and repair the leak before recharging. A recharge without fixing the leak only buys time.
Gas pack: failed hot surface igniter.
The most common no-heat call on a gas pack after a summer of sitting idle. Symptom: the inducer motor runs, then the unit shuts down without lighting. Usually repaired the same visit.
Gas pack: dirty flame sensor.
The burners light, then go out after a few seconds. Usually cleaned or replaced the same visit.
Gas pack: inducer motor or pressure switch.
The safety check that proves the venting is clear before the burners light. Rooftop units collect debris and nests in the vent over the summer.
Gas pack: high-limit or rollout switch tripped.
The furnace section is overheating, usually from a clogged filter or blocked airflow. The switch is doing its job, so we find the airflow problem instead of just resetting it.
Thermostat not calling for heat.
Especially after a thermostat swap or a summer of cool-only settings. Sometimes the cheapest repair on the list.
Maricopa Air
Repair or Replace?
If the math points to repair, we repair. If it points to replacement, we say so. We run the numbers with you on site: estimated repair cost, system age, remaining lifespan, and what a replacement quote would look like. A heat pump in Phoenix works year-round, cooling in summer and heating in winter, so age catches up with it the same way it does an AC.
If replacement turns out to be the right call: Heating Installation & Replacement in Scottsdale & Phoenix →
OUR WORK
How Heating Repair Connects to the Rest of Your System
Heating Installation & Replacement
Heat pumps and gas packs sized with a Manual J load calculation, from American Standard, Goodman, and Amana.
Heat Pump Repair
Reversing valves, defrost boards, backup heat, and refrigerant leaks, diagnosed in any season.
Financing
Financing available through Wisetack on qualifying repairs and replacements.
Real questions Valley homeowners ask us every week.
Heating Repair FAQs
Why is my heat pump blowing cold air on the heat setting?
Three common causes. It may be in a defrost cycle, which is normal and lasts a few minutes. The reversing valve or its solenoid may have failed, leaving the system stuck in cooling. Or it may be low on refrigerant. If cool air continues for more than 15 minutes, call us. More on this in our heat pump repair guide.
Why is steam coming off my heat pump's outdoor unit?
That is almost always a normal defrost cycle. The unit is melting frost off the outdoor coil, and the meltwater steams in cold air. It should stop within about 10 minutes. If the coil stays iced over, or the unit steams constantly, the defrost control may have failed.
What do "AUX heat" and "EM heat" mean on my thermostat?
AUX (auxiliary) heat is electric backup that turns on by itself when the heat pump needs help, like on a cold morning or during defrost. EM (emergency) heat is the same backup switched on manually, with the heat pump off. Short AUX runs are normal. If AUX runs for hours, or EM heat was left on by mistake, your electric bill will show it, and it can mean the heat pump itself needs repair.
Why does my heater smell like burning dust when I first turn it on?
Dust settles on the furnace or heat strips over the summer and burns off on the first run. It should fade within an hour. A burning plastic or electrical smell, or any smell that does not fade, is different: shut the system off and call us. If you smell gas, leave the house and call Southwest Gas from outside.
Do Phoenix homes really need a heating system?
Yes. Valley nights regularly drop into the 30s and low 40s from December through February, and most homes are built with a heat pump or gas pack for exactly that. It runs only a few months a year, which is why problems tend to show up on the first cold morning.
How long do heat pumps last in Arizona?
About 10 to 12 years. A Phoenix heat pump cools 7+ months a year and heats through winter, so it wears like an AC that never gets an off-season. If yours is 10+ years old and facing a major repair, we will show you the repair-or-replace math on site.
How much does heating repair cost?
It depends on the fault, and we do not guess over the phone. Every visit starts with a diagnostic, and you get the total repair cost in writing before any work starts.
Do you work on all brands?
Yes. We are manufacturer trained on American Standard and Goodman, and we service every major residential brand.
Is there a warranty on the repair?
Yes. Parts carry the manufacturer warranty. Our workmanship warranty on the repair itself is one year.
Do you offer financing on repairs?
Yes, on qualifying repairs. Financing is available through Wisetack. See financing options →
Built for It.
A Written Diagnosis and Price Before Any Work Starts.
Call (480) 941-3945 or send us a request and we’ll get back to you to schedule a repair visit.