Flame Sensor Clean/Replace cost in Phoenix
A fair price for flame sensor clean/replace in Phoenix is $125–$265 as of July 2026. That range covers the diagnostic visit, the part, licensed labor, and a written warranty — not parts alone. Typical is about $195.
| Line | Typical range |
|---|---|
| Part (typical wholesale) | $10–$40 |
| Labor & diagnostic | $90–$180 |
| Fair total, installed | $125–$265 |
What it does
The flame sensor confirms the burners actually lit. When it is coated, the furnace lights and then shuts down a few seconds later.
Why it fails in Phoenix
This one often just needs cleaning. Ask whether cleaning was tried before replacement — the answer tells you a lot about the company.
What a fair quote includes
- Diagnostic and testing
- The part, new — ask for the part number
- Labor by a licensed tech
- Parts and labor warranty in writing
Worth knowing
- Often just needs cleaning — ask whether cleaning was tried before replacement.
Have a quote for this repair? See where it falls.
Questions
What should the quote include?
A fair quote covers the diagnostic visit, the part, licensed labor, and a written parts-and-labor warranty. Ask for the part number — with it, the price is checkable.
Why do quotes for this vary so much?
Brand of part, warranty length, after-hours timing, and how hard your system is to access all legitimately move the number. That is why we show a range rather than a single price.
Is the diagnostic fee extra?
It varies. A fair quote credits the diagnostic fee toward the repair if you approve the work — ask before the tech starts.
Ranges updated July 21, 2026. Estimates are planning ranges based on regional market data, not binding quotes. Final pricing depends on your specific system and an on-site diagnosis. How we set these ranges