Is your heat pump not performing like it used to? It might be time for a professional deep clean. While regular filter changes are important, they don’t reach the deep-seated grime that can accumulate over time. Here are five signs that your heat pump needs professional attention from Moran Heat Pump Cleaning.

1. Unusual Smells

If you notice a musty or “dirty sock” smell when your mini-split is running, it’s a clear sign of mold spores or bacterial growth on the evaporator coils. A professional sanitization will eliminate these odors at the source.

2. Strange Noises

Rattling, buzzing, or whistling sounds can indicate that debris is trapped in the blower fan or that the system is struggling to pull air through clogged HVAC components.

3. Reduced Airflow

If the air coming from your vents feels weak, even on high settings, your system is likely choked with dust. Cleaning the internal blower wheel and coils can restore full airflow optimization.

4. Higher Utility Bills

An unexplained spike in your energy costs often means your heat pump is working harder than it should. Restoring its cleanliness restores its thermal efficiency.

5. Visible Mold or Dust

If you can see dust buildup or dark spots inside the unit when you open the cover, the internal components are likely much worse. Don’t wait—call Moran Heat Pump Cleaning today for expert Maine HVAC service.