Every furnace call starts with a combustion and carbon monoxide safety check, not just a symptom fix.
Flat-rate pricing quoted after diagnosis, no pressure toward a premature system replacement.
If you're dealing with a pilot light that won't stay lit, an ignitor that clicks but never catches, or a furnace that runs but blows cold air, you already know furnace failures carry a safety dimension — carbon monoxide and gas leaks — that most other HVAC repairs don't, so the diagnostic has to start there.

Waiting rarely saves money and often turns a same-day repair into a longer, more involved job.
AAA Pro HVAC built its furnace repair process around one idea: diagnose first, quote honestly, fix it right.
We're licensed, insured, and staffed with techs who've spent years specifically on furnace repair, not general handyman work with an HVAC certificate bolted on.

Every furnace visit includes a combustion analysis and carbon monoxide test before any repair recommendation.
Our crews are trained on standing pilot, hot surface ignition, and electric resistance furnace systems alike.
No push toward replacement when a repair genuinely solves the problem.
We understand a dead furnace in winter is a pipe-freezing risk, not just a comfort issue.
From the first symptom to the final fix, these are the specific furnace repair services our Marissa-area crews are equipped for.
Hot surface ignitors crack over time and simply stop glowing — we test resistance rather than replacing on assumption. This is one of the most requested furnace repair calls we get across Marissa, IL.
Faulty gas valves are treated as a safety-critical repair, prioritized accordingly. This is one of the most requested furnace repair calls we get across Marissa, IL.
A cracked heat exchanger is a carbon monoxide risk and gets flagged immediately with the furnace shut down if needed. This is one of the most requested furnace repair calls we get across Marissa, IL.
We test motor amp draw against rated spec before replacement. This is one of the most requested furnace repair calls we get across Marissa, IL.
We inspect the full flue run, not just the connection at the furnace. This is one of the most requested furnace repair calls we get across Marissa, IL.
A furnace that won't respond to the thermostat at all sometimes traces to a control board fault rather than the burner assembly. This is one of the most requested furnace repair calls we get across Marissa, IL.

Tell us the symptom — no ignition, cold air, gas smell, or error code — and we route accordingly.
Techs arrive with combustion analyzers and common ignitor/gas valve stock loaded.
Safety check first — combustion and carbon monoxide — then full mechanical diagnostics.
Most ignition and control repairs finish same-visit.

Tech tested the ignitor's resistance right in front of me and swapped it in under thirty minutes.
Old furnace was blowing cold air even though the blower ran fine.
They found a hairline crack in the heat exchanger I never would've noticed.
Pilot light kept going out every few hours.

Usually a failing ignitor or a fouled flame sensor — both are testable with the right equipment rather than replaced blind.
Yes — it's a genuine carbon monoxide risk and we treat it as a safety issue, not a routine repair line.
Could be a delayed ignition fault, a failed gas valve, or a limit switch issue — a full diagnostic narrows it down.
Electric resistance furnaces fail differently than gas units, and we diagnose accordingly.
Gas odor calls receive top dispatch priority.
Call dispatch for a live arrival estimate based on current demand.

Our furnace repair crews are positioned throughout Marissa, IL to keep response times realistic, not just promised.
☎ Call +1-866-805-8548 for Marissa Service