If you’re discovering a smell from your heat pump, it’s attempting to tell you that something is wrong. We’ve put together a list of the top six heat pump smells, what causes them and how you can repair them.
- Heat pump smells musty
- Heat pump smells like fish
- Heat pump smells like sulfur
- Heat pump smells like sewer
- Heat pump smells like burning
- Heat pump defrost cycle smells
1. Heat Pump Smells Musty
If your heat pump smells musty, there’s likely mold growing on wet evaporator coils or in the ductwork. This heat pump odor is often referred to as dirty sock syndrome. You can avoid this by scheduling routine heat pump maintenance and air duct cleaning.
2. Heat Pump Smells Like Fish
If your heat pump smells like fish, there could be several things wrong:
- Overheated motor
- Wiring issue
- Plastic components or coating is melting
- Other mechanical issue
Electrical problems are unsafe, so shut your heat pump system off right away at the breaker box and contact us at for heat pump repair.
3. Heat Pump Smells Like Sulfur
Usually when you are dealing with a rotten egg smell, you’ve got a gas leak. But your heat pump doesn’t utilize natural gas. If your heat pump smells like sulfur, a little animal may have creeped inside it for warmth and died. One of our Moyer Total Indoor Comfort technicians can remove the smell by cleaning your heat pump.
4. Heat Pump Smells Like Sewer
As we reviewed above, your heat pump is electric, so any rotten egg smells are connected to a gas leak in another place. If your heat pump smells like sewer, you might have a backed-up or broken sewer line. We suggest calling a company that does sewer line repair.
5. Heat Pump Smells Like Burning
You might have an electrical issue if your heat pump smells like burning, burning plastic or burning rubber. This burning smell can be caused by melting plastic on electrical wires. Electrical problems in HVAC systems are serious and could lead to a fire. If you notice this smell, turn off your heat pump at the breaker and call us at .
6. Heat Pump Defrost Cycle Smells
Like we discussed previously, a dirty socks smell can happen when your evaporator coils need sanitizing. You might encounter this smell when your heat pump goes into defrost mode.
It’s ordinary for your heat pump to have to use defrost mode during heating season. When the air is much cooler, frost can form rapidly on the coils from condensation and impede heating. During defrost mode, your heat pump temporarily switches to air conditioning to clear away the frost.
Having a Moyer Total Indoor Comfort HVAC technician clean the coils will help eliminate the smell.
Trust Us with Your Heat Pump Repair Needs
It can be hard to troubleshoot your heat pump by all by yourself. Your comfort matters to us at Moyer Total Indoor Comfort, so you can count on our professionals to assist you when you need us. When you need heat pump repair in that you can depend on, call us at .