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How much does furnace ignitor or flame sensor replacement cost in Missouri?
Updated September 2026 · Missouri price index 0.97 for HVAC work (national = 1.00)
In Missouri, an HVAC company typically charges $95 to $370 to replace a furnace hot-surface ignitor or flame sensor, with most jobs landing near $175. That is about 3% below the national average of $95–$380, based on what HVAC technicians earn in Missouri.
AI-powered second opinion using these same Missouri figures. No account, no card. Need someone to do the work? Verified pros in Missouri took the Fair Price Pledge.
What a Missouri quote means
| Quote for this job | What it means |
|---|---|
| Under $57 | Suspiciously low — ask what is excluded, and check licensing and insurance |
| $57 – $407 | Fair price — inside the typical range (up to 10% over the top is still normal) |
| $407 – $648 | Running high — get the quote itemized, and get a second one |
| Over $648 | Ripoff territory — more than 1.75× the high end of the typical range |
Same rules the QuoteJury checker uses on every quote.
What you're paying for
What is usually included: Diagnosis, the part ($10–$60 for a flame sensor or ignitor), installation and a combustion check, usually within an hour.
What moves the price:
- Diagnostic fee versus repair cost; on this job the visit is most of the bill
- Flame sensors can often be cleaned rather than replaced
- Brand-specific ignitors and availability
- Winter emergency rates
Both parts are under $50; the bill is the diagnostic fee plus a short labor block, so after-hours/emergency heat calls and OEM-only ignitors are what push it up.
Furnace ignitor or flame sensor replacement cost across Missouri
Typical range by metro and rural area, from BLS wage data for HVAC technicians in each area.
| Area | Typical range | Most jobs |
|---|---|---|
| Cape Girardeau, MO-IL | $80 – $320 | $150 |
| Columbia, MO | $90 – $370 | $175 |
| Jefferson City, MO | $90 – $360 | $175 |
| Joplin, MO-KS | $85 – $350 | $165 |
| Kansas City, MO-KS | $95 – $390 | $185 |
| Springfield, MO | $90 – $350 | $170 |
| St. Joseph, MO-KS | $95 – $380 | $180 |
| St. Louis, MO-IL | $95 – $380 | $180 |
| Central Missouri nonmetropolitan area | $80 – $320 | $155 |
| North Missouri nonmetropolitan area | $80 – $330 | $155 |
| Southeast Missouri nonmetropolitan area | $80 – $330 | $155 |
| Southwest Missouri nonmetropolitan area | $85 – $340 | $160 |
Frequently asked
Is $175 a fair price for furnace ignitor or flame sensor replacement in Missouri?
Yes. $175 is right around what most homeowners in Missouri pay. Anything from $57 to $407 is inside the normal range for an HVAC company; above $407 it is worth getting a second quote.
Why do quotes for the same job vary so much?
Diagnostic fee versus repair cost; on this job the visit is most of the bill. Flame sensors can often be cleaned rather than replaced. Company overhead matters too: a large company with trucks, dispatchers and a warranty department charges more than a one-person shop, and both can be honest prices.
When should I get a second quote?
Any time a quote lands above $407, or when the contractor cannot break it into parts, labor and fees. Ask for the itemized version, ask what would change the price, and confirm licensing and insurance. You can also paste the quote into the free QuoteJury checker for an instant second opinion.
Other HVAC jobs in Missouri
- AC capacitor replacement
- AC contactor replacement
- Condenser fan motor replacement
- Furnace or air handler blower motor replacement
- AC refrigerant recharge (R-410A)
- Evaporator coil replacement
- AC compressor replacement
- AC condenser (outdoor unit) replacement
- Full central AC system replacement (~3 tons)
- Gas furnace replacement
- Smart thermostat installation
- Single-zone ductless mini-split installation
- HVAC service call and diagnostic fee
Furnace ignitor or flame sensor replacement in other states
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Sources
- HomeGuide (2023): $100–$250 nationally
- Angi (2026): $150–$500 nationally
- Fixr (2025): $96–$178 nationally
- HomeGuide (2025): $100–$250 nationally
- U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025 — median hourly wages by state and metro area
About these numbers. Ranges are typical market rates for a licensed, insured contractor, blended from published U.S. cost guides and adjusted with U.S. Bureau of Labor Statistics wage data (OEWS, May 2025) for each state and metro area. They are estimates, not a bid, appraisal or inspection. Real prices move with parts, access, permits and code requirements. The quote checker is AI-powered and labeled as such.