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Condensate Pump Alarm

A condensate pump alarm means water isn't draining — the pump failed, the line is clogged, or the float switch tripped. Clear the drain first; pump replacement typically runs $150–$450.

Reviewed July 2026

What does condensate pump alarm mean?

High-efficiency furnaces and AC coils produce condensate that a pump sends to a drain. When the pump fails or the line clogs, a float switch triggers an alarm and may shut down the furnace to prevent water damage.

What usually causes condensate pump alarm?

Clogged condensate drain linemost common

Typical repair: $150–$450

Failed condensate pump motorcommon

Typical repair: $150–$450

Stuck float switchpossible

Typical repair: $150–$450

Find your exact error code

Select your furnace brand to jump to the code page for this symptom.

Rheem61Blower failed to runRuud61Blower failed to runDaikin3 FlashPressure-switch circuit did not closeLuxaire12 BlinksIgniter circuit fault

What should I check first when condensate pump alarm?

  1. Turn off the furnace and clear standing water.
  2. Check the drain hose for kinks and clogs.
  3. Test the pump by pouring water into the reservoir.
  4. Replace or service the pump if it doesn't run when tested.

What a repair costs

A condensate pump replacement typically costs between $150 and $450 nationally.

Typical repair cost
$150 – $450condensate pump replacement
Where the money goes
Part $50–$150Labor $0–$400Typical labor time: 0.5–1 hrs

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