Diagnostic 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.
Our diagnostic process
We arrive within a one-hour window, inspect the system end-to-end, read any active error codes, test temperatures and pressures, and identify the actual cause. You get a written quote before any repair work starts. The $129 diagnostic fee is applied to any repair you proceed with.
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 or raise repair cost. 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 require a diagnostic visit instead.
How much does diagnosis cost?
Our diagnostic visit is $129 flat, applied to any repair you proceed with. We will quote any repair before starting work.
Need a tech to take a look?
$129 flat diagnostic. Same-week scheduling across Vermont. Credited toward any repair.