Heat PumpLeak Repair2025-11-26
Heat Pump Leaking Water: Causes
Indoor water usually means a clogged condensate drain; outdoor water is often normal defrost runoff.
A heat pump can leak water indoors or out. Indoor leaks need attention; outdoor water is often just defrost melt.
Indoor leaks
Water from the indoor unit is usually a clogged condensate drain line or pan, a frozen indoor coil, or a failed condensate pump — all fixable but worth prompt attention to avoid damage.
Outdoor water
Water under the outdoor unit in winter is typically normal defrost runoff. Pooling that freezes into a hazard or excessive leakage should be checked.
Key takeaways
- Indoor water = clogged drain or frozen coil
- Outdoor winter water is often normal defrost
- Clear the condensate line and pan
- Don't let outdoor melt freeze into a slip hazard
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