why is my heat pump leaking water inside

The condensate drain line removes moisture removed from your air. Over time, algae and mold can clog this line, causing water to back up and overflow.

A frozen evaporator coil can produce excess water when thawing. Check your air filter — a dirty filter restricts airflow and causes coil freezing.

If the unit isn't properly leveled, condensate water may pool inside instead of draining. This may require adjusting the unit's position.