Troubleshooting guide
Heat pump dripping water inside? Here is what is happening and what to do.
Same root cause as leaking: clogged condensate drain. Don't ignore it. Even a slow drip will damage drywall and flooring. We can clear the line and clean the pan during a standard cleaning visit.
Likely causes, ranked by probability
- 1
Clogged condensate drain line
Algae or biofilm blocking the drain.
Likelihood 75%
- 2
Frozen indoor coil thawing
Often paired with weak airflow from a clogged filter.
Likelihood 15%
- 3
Damaged drain pan
Rare but possible in older units.
Likelihood 10%
What you can try first
- · Wet/dry vac at the outdoor drain end
- · Place a container or towel under the unit
When to call us: DIY clearing fails or drips persist after 24 hours.
When a cleaning helps, and when to call a repair pro
A good portion of “something is off” symptoms (musty smell, weak airflow, water dripping from the indoor unit, surface mold) trace back to a dirty blower wheel, clogged drain, or biofilm on the coil. A full disassembly cleaning solves those. If we get on site and find an electrical or mechanical fault (a failing capacitor, a stuck reversing valve, refrigerant issues), we will tell you and recommend a heat pump repair contractor. We do not do repairs ourselves.
Frequently asked questions
Is heat pump dripping water inside dangerous?
Most causes of "heat pump dripping water inside" are not immediately dangerous, but ignoring them can damage the system over time. DIY clearing fails or drips persist after 24 hours.
Can a cleaning fix this?
Sometimes. Biofilm, dirty coils, and clogged drain lines often resolve after a deep clean. Mechanical or electrical issues need a heat pump repair contractor instead.
Do you do repairs?
No. We focus on cleaning and twice-yearly maintenance. If your system needs a part replaced or an electrical fix, we will tell you what we see and recommend a repair contractor.
Try a cleaning first.
If the symptom traces back to a dirty unit, we can fix it. If it does not, we will tell you and point you to a repair pro.