Quick answer: Schedule heater maintenance in Chandler in October or early November. For gas furnaces the most important part is the heat exchanger inspection, which looks for cracks that could let combustion gases into the home.
Schedule heater maintenance in Chandler in October or early November, before the first nights in the low 40s. The visit catches the problems that come from seven months of the equipment sitting idle, and on gas furnaces it includes the safety check that matters most: the heat exchanger inspection.
Gas furnace checklist
- Visual and camera inspection of the heat exchanger for cracks, rust-through or separated seams.
- Combustion analysis: carbon monoxide in the flue, draft, and burner flame pattern.
- Clean flame sensor and inspect igniter.
- Test limit switch, rollout switches and pressure switch.
- Check gas pressure and look for leaks at the valve and union.
- Inspect flue pipe for disconnections, especially in attic installations.
Why the heat exchanger inspection matters
A heat exchanger keeps burning gas and its exhaust separate from the air you breathe. Metal expands each time the furnace fires and contracts when it stops. Over decades that cycling can crack it. Chandler’s population doubled between 1990 and 2000, so many original furnaces from that era are now well past 20 years old. A crack does not always show symptoms. That is why we inspect rather than wait. If we find one, we show you photos or camera footage and explain your options. We will not shut off a furnace without showing you why.
Heat pump checklist
- Force the system into heat mode and confirm the reversing valve shifts.
- Test defrost control and sensor.
- Measure backup strip heat amperage and check sequencers.
- Check outdoor coil and refrigerant temperatures in heating mode.
Electric strip heat
We check heating elements for continuity, look for loose terminals that cause breaker trips, and vacuum dust from the element housing to reduce the first-run burning smell.
Combine with spring cooling maintenance
Homes with heat pumps use the same equipment year-round. A fall heating visit plus a spring AC tune-up keeps both modes checked.
Common questions
What is a heat exchanger inspection?
A visual and camera check of the furnace heat exchanger plus a combustion test for carbon monoxide in the flue.
Do heat pumps need fall maintenance?
Yes. The technician confirms the reversing valve shifts into heat mode, tests the defrost control and measures the backup heat strips.
How old are most furnaces in Chandler?
Many date from the 1990s building boom, when the city's population roughly doubled, so a large share are now past 20 years old.
Book a fall heater check. Call 480-719-8109 — a real person in the East Valley answers.