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.

How can a Durham homeowner tell if a technician is qualified to diagnose a heat exchanger or igniter problem?

Look for technicians with NATE certification, manufacturer training, or explicit experience with heat exchanger and igniter diagnostics. Verify the contractor’s license with the North Carolina State Board of Examiners. Request references or reviews mentioning similar repairs in Durham neighborhoods to confirm relevant experience.

What should a homeowner ask when calling for emergency no‑heat service in Durham?

Ask the dispatcher about estimated arrival time, whether the technician carries common replacement parts, and any diagnostic fees. Request the contractor’s license number and inquire about safety checks, such as carbon monoxide testing and heat exchanger inspection. This prepares the homeowner and helps compare response quality between providers.

Are blower or inducer motor failures treated as emergencies by Durham providers?

Many providers treat blower or inducer motor failures as high priority when they cause no heat or safety issues. Availability depends on parts stock and technician schedules. Ask about emergency parts sourcing and whether the provider dispatches technicians with common replacement parts on hand.

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 Durham, NC listed here. They send quotes back — no obligation.

Best Furnace Igniter & Flame Sensor Repair in Durham, NC

Last updated July 5, 2026

What to look for in Igniter & Flame Sensor Repair in Durham

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 Durham: 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 North Carolina, HVAC contractors hold an H-1/H-2/H-3 license through the NC State Board of Examiners of Plumbing, Heating & Fire Sprinkler Contractors — verify before scheduling.

How we rank Igniter & Flame Sensor Repair providers → · Top picks meet at least one of: a category award, ≥2 verified signals, or Vouched Score ≥ 70.

Top picks

Piedmont Metro Heating & Air★ Best for Igniter & Flame-Sensor Repair
Strong customer feedback (4.5★ from 105+ Google reviews).
Google 4.5★ (105+)

Typical Igniter & Flame Sensor Repair costs in Durham, NC (2026)

Last updated June 21, 2026

Estimated ranges for Durham, NC. 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–$215
Hot surface igniter replacement (installed)	$130–$385
Limit or pressure switch replacement (installed)	$130–$340

Why Durham homeowners call Furnace Repair pros when winters bite

Durham's occasional cold snaps and older post‑war homes make prompt furnace service important for safety and comfort. Homeowners search for the best furnace repair companies in Durham, NC to restore heat quickly and address aging equipment before a freeze.

Which Furnace Repair option in Durham gives the fastest emergency response?

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.
How can a Durham homeowner tell if a technician is qualified to diagnose a heat exchanger or igniter problem?: Look for technicians with NATE certification, manufacturer training, or explicit experience with heat exchanger and igniter diagnostics. Verify the contractor’s license with the North Carolina State Board of Examiners. Request references or reviews mentioning similar repairs in Durham neighborhoods to confirm relevant experience.
What should a homeowner ask when calling for emergency no‑heat service in Durham?: Ask the dispatcher about estimated arrival time, whether the technician carries common replacement parts, and any diagnostic fees. Request the contractor’s license number and inquire about safety checks, such as carbon monoxide testing and heat exchanger inspection. This prepares the homeowner and helps compare response quality between providers.
Are blower or inducer motor failures treated as emergencies by Durham providers?: Many providers treat blower or inducer motor failures as high priority when they cause no heat or safety issues. Availability depends on parts stock and technician schedules. Ask about emergency parts sourcing and whether the provider dispatches technicians with common replacement parts on hand.
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 Durham, NC listed here. They send quotes back — no obligation.