Best Furnace Igniter & Flame Sensor Repair in Marietta, GA
What to look for in Igniter & Flame Sensor Repair in Marietta
A fouled flame sensor or cracked hot-surface igniter is the most common reason a furnace stops heating — and the cheapest fix when diagnosed honestly. We weight providers who rule out the common, low-cost parts before quoting a control board or a new furnace.
- Common-failure-first diagnosis. Provider lists igniter and flame-sensor repair as distinct service lines and states it isolates the failed part before quoting major components.
- Combustion / method evidence. Stated combustion or measured diagnosis corroborates that the shop tests rather than guesses.
- Google rating. A strong rating floor is the minimum trust threshold for a common repair.
Verify before you book
- Whether the cheap parts were actually ruled out first — ask which component tested bad.
- The flat-rate price for your specific furnace model — confirm before authorizing.
- License status with your state board — verify TDLR (TX), ROC (AZ), or your local equivalent before paying.
See full ranking methodology for Igniter & Flame Sensor Repair →
Furnace Igniter Repair in Marietta: what fails first
The flame sensor and hot-surface igniter are the high-frequency, low-cost no-heat failures — ruling them out first tells an honest shop apart from one that jumps to a control board or a new furnace. Here is what each of the 1 pro below publishes: In Georgia, HVAC contractors hold a Conditioned Air Class I or II license through the Secretary of State — verify before signing.
Top picks
Garrett Mechanical★ Best for Igniter & Flame-Sensor Repair
Consistently strong customer feedback (4.9★ from 1,075+ Google reviews; 3.4★ from 10+ Yelp reviews).
Google 4.9★ (1,075+)Yelp 3.4★ (10+)
Typical Igniter & Flame Sensor Repair costs in Marietta, GA (2026)
Last updated
Estimated ranges for Marietta, GA. Actual cost varies with home size, equipment, and scope — always request a written quote for your job.
| Service | Typical range |
|---|---|
| Flame sensor cleaning / replacement | $70–$220 |
| Hot surface igniter replacement (installed) | $130–$395 |
| Limit or pressure switch replacement (installed) | $130–$350 |
Why Marietta, Georgia homeowners face unique Furnace Repair needs
Colder-than-average nights and high humidity in Marietta increase freeze-thaw cycles and corrosion that stress home furnaces during winter. Homeowners searching for the best furnace repair companies in Marietta, GA should expect technicians who diagnose cracked heat exchangers, pilot failures, and condensation-related corrosion.
What Marietta homeowners ask first about Furnace Repair — quick answers and when to escalate
- Why won't my furnace ignite?
- The two most common causes are a dirty flame sensor (it can't confirm the burner lit, so the furnace shuts down for safety) and a cracked hot-surface igniter. Both are inexpensive parts. A good tech rules these out before quoting a control board or condemning the furnace.
- How much should an igniter or flame sensor cost?
- The parts are inexpensive; the service call and labor make up most of the bill. An honest shop prices the specific failed part directly rather than bundling it into a vague 'ignition system' quote or using it to upsell a replacement.
- When should a homeowner escalate an igniter or flame-sensor failure to emergency repair in Marietta?
- Escalate to emergency repair if the furnace fails to light repeatedly or produces an unusual gas smell. These symptoms can indicate a persistent ignition or combustion safety issue. Contact a technician who offers emergency service availability and who documents combustion testing. If there is any concern about gas odor, evacuate and call the gas company or emergency services first, then call a licensed furnace contractor.
- How quickly should a no-heat call be prioritized during Marietta's colder-than-average nights?
- Prioritize no-heat calls immediately during cold nights because rapid temperature drops increase risk to pipes and occupants. Many local providers advertise emergency service availability for overnight failures. When scheduling, request a time-window and written estimate, and confirm the technician will perform a heat-exchanger inspection and pressure-switch check as part of the response.
- How do I get a quote from these furnace repair companies?
- Submit one request on this page and we send it to the vetted furnace repair pros in Marietta, GA listed here. They send quotes back — no obligation.