Furnace ignitor replacement cost: $150–350 installed, and why the part is $40
The hot surface ignitor is the most-replaced furnace part. Here is the honest math on the price, and when it is a DIY candidate.
A hot surface ignitor is a $20–60 ceramic part that glows orange to light the burners. They wear out on a clock — 3 to 7 heating seasons is a normal life — and when one dies you typically get clicking or a fan that runs without heat, plus an ignition-failure fault code on the board.
| Item | Typical range | Note |
|---|---|---|
| Part only (universal silicon nitride) | $20–60 | Hardware store / online |
| Part only (brand OEM) | $40–120 | Dealer counter pricing |
| Installed, standard visit | $150–350 | Includes diagnostic time |
| Installed, after-hours emergency | $250–500 | The cold-night premium |
Why the install multiplies the price
You are paying for the truck, the diagnosis that confirmed the ignitor (and not the gas valve or flame sensor) is the fault, and the warranty on the work. For a 20-minute swap that feels steep; it is also what keeps the lights on at a service company. Both things are true.
The DIY case
On most furnaces the ignitor is two screws and a plug behind the burner door, with power off at the switch. If you can replace a car headlight you can replace an ignitor — the one real rule is to never touch the new element with bare fingers (skin oil creates hot spots that crack the ceramic). Buy silicon nitride rather than the older spiral carbide; it lasts years longer.
Confirm before you buy
A furnace that clicks but never lights can also be a dirty flame sensor or a gas-supply fault. The board's blink code separates ignition failure from flame-proving failure — count the flashes and look up your brand here first, so you do not replace a working $40 part.
Where the installed price goes
Take the middle of the range apart: a $250 install typically contains a $75–150 diagnostic (usually credited against the work), a $20–60 part, and the balance in labor, warranty, and overhead. What pushes a job toward $350 is rarely the swap itself — it is diagnostic time when the symptoms could equally fit a dirty flame sensor or a gas-supply problem, or an ignitor that only exists as a $40–120 brand OEM part from a dealer counter. The after-hours row is its own economy: $250–500 buys a truck on a winter night, and the first cold week of the season — when furnaces come back into daily use and every service calendar fills at once — is exactly when that premium is hardest to avoid.
Codes that lead here
An ignition-failure lockout is the classic path to this page, and the same event wears a different name on every brand: Carrier status code 14, Goodman 1 flash, Trane 2 flashes, Lennox alert 270 (Watchguard), and Rheem 4 blinks on *RC models all mean repeated failed ignition attempts followed by lockout. One warning before you order the part: on Goodman, Trane, and York controls the failed-igniter code doubles as a bad-ground code, because the board cannot tell those two faults apart — the full cross-brand list is on the igniter fault codes page. A lockout code plus a new ignitor that did not fix it usually means the fault was on the other side of that pairing.
Know the fault code before you call
If the furnace is flashing its diagnostic LED, count the pattern and look the code up by brand here. Walking into the quote knowing what the furnace says is wrong is the cheapest leverage a homeowner has.
Look up your exact code first
Repair pricing depends on which part actually failed — the error code tells you. Find yours by brand: Carrier · Goodman · Lennox · Rheem · Trane · York · Armstrong / AirEase / Concord / Ducane · Heil / Tempstar / Comfortmaker.
Sources
- Price ranges on this page are editorial estimates of typical US parts-plus-labor pricing, stated as ranges because labor rates and brand parts pricing vary by market. They are not quotes.
- Carrier 58MCB Service Manual, 327884-101 Rev. B — status codes
- Goodman Manufacturing — Diagnostic Code Identification System
- Lennox Residential Communicating Systems Alert Code Guide, document 100017 — Table 2
- Trane Installer's Guide 18-CD29D1-14-EN — Table 21, Integrated Furnace Control Error Flash Codes
- Rheem Gas Furnaces Installation Instructions 708503a — *RC/*RL sequence of operation