Typical repair cost

Limit Switch Replacement Cost (2026)

The high-limit switch shuts the furnace down when it overheats. Replacement restores safe operation after airflow issues are fixed.

National range

$150–$600

Part $20–$80Labor $70–$580

Pricing data updated July 2026· labor 1–2 hrs

Where the money goes

Part $20–$80Labor $70–$580Typical labor time: 1–2 hrs

You might need this if…

DIY difficulty: moderate

•Furnace shuts off before reaching temperature

•Overheating error codes

The part

The high-limit switch shuts the furnace down when it overheats. Replacement restores safe operation after airflow issues are fixed.

Already got a repair quote?

See if the price is fair before you say yes.

Check your quote →

Get quotes from local pros

Up to 3 competing bids from licensed techs.

Free · No signup · No obligation

Error codes that lead to this repair

E3Limit circuit openedCall a pro soon 4 FlashLimit circuit openedCall a pro soon 274Limit-circuit recycle lockoutCall a pro soon 22Limit circuit openedCall a pro soon 4 BlinksLimit circuit openedCall a pro soon 11 BlinksExtended limit-open lockoutCall a pro soon E3Limit circuit openedCall a pro soon 4 FlashLimit circuit openedCall a pro soon 22Limit circuit openedCall a pro soon 4 BlinksLimit circuit openedCall a pro soon 11 BlinksExtended limit-open lockoutCall a pro soon 4 BlinksLimit circuit openedCall a pro soon 11 BlinksExtended limit-open lockoutCall a pro soon E3Limit circuit openedCall a pro soon 4 FlashLimit circuit openedCall a pro soon 4 BlinksLimit circuit openedCall a pro soon 4 BlinksLimit circuit openedCall a pro soon

This is general information, not professional advice. Gas, electrical, and combustion repairs can be dangerous — when in doubt, call a licensed technician.