If you’re recognizing a odor from your heat pump, it’s trying to tell you that something is wrong. We’ve put together a list of the most commonly encountered six heat pump smells, what causes them and how you can correct 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 most likely mold growing on moist evaporator coils or in the ductwork. This heat pump odor is often referred to as dirty sock syndrome. You can deter this by scheduling frequent heat pump maintenance and air duct cleaning.
2. Heat Pump Smells Like Fish
If your heat pump smells like fish, there could be a few things wrong:
- Motor is too hot
- Wiring problem
- Plastic components or coating is melting
- Other mechanical problem
Electrical problems are unsafe, so turn your heat pump system off as soon as possible at the breaker box and call 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 small animal may have creeped inside it for warmth and died. One of our Home Comfort Heating & Air [techs can remove the smell by cleaning your heat pump.
4. Heat Pump Smells Like Sewer
As we mentioned earlier, your heat pump is electric, so any rotten egg smells are linked to a gas leak somewhere else. If your heat pump smells like sewer, you might be dealing with a backed-up or broken sewer line. We advise getting in touch with a company that does sewer line repair.
5. Heat Pump Smells Like Burning
You might have an electrical problem if your heat pump smells like burning, burning plastic or burning rubber. This burning smell can be the result of melting plastic on electrical wires. Electrical issues in HVAC systems are serious and could cause a fire. If you notice this smell, shut off your heat pump at the breaker and get a hold of us at .
6. Heat Pump Defrost Cycle Smells
Like we mentioned above, 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 common for your heat pump to have to switch on defrost mode during heating season. When the air is much cooler, frost can form rapidly on the coils from condensation and restrict heating. During defrost mode, your heat pump shortly switches to air conditioning to get rid of the frost.
Having a Home Comfort Heating & Air HVAC technician clean the coils will help get rid of the odor.
Depend on for Your Heat Pump Repair Needs
It can be hard to troubleshoot your heat pump by alone. Your comfort matters to us at Home Comfort Heating & Air, so you can count on our specialists to help you when you need us. When you need heat pump repair in that you can count on, call us at .