If you’re recognizing a odor from your heat pump, it’s trying to tell you that something is up. We’ve created a list of the most common 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 likely mold growing on wet evaporator coils or in the ductwork. This heat pump odor is often called dirty sock syndrome. You can prevent 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 a couple of things wrong:
- Motor is too hot
- Wiring issue
- Plastic components or coating is melting
- Other mechanical problem
Electrical problems are dangerous, so turn your heat pump system off as soon as possible at the breaker box and contact us at for heat pump repair.
3. Heat Pump Smells Like Sulfur
Normally when you have a rotten egg smell, you have a gas leak. But your heat pump doesn’t use natural gas. If your heat pump smells like sulfur, a small animal may have gotten inside it for warmth and died. One of our Evenaire Heating & Air Conditioning experts can eliminate the smell by cleaning your heat pump.
4. Heat Pump Smells Like Sewer
As we discussed before, your heat pump is electric, so any rotten egg smells are connected to a gas leak somewhere else. If your heat pump smells like sewer, you might have a backed-up or broken sewer line. We advise calling 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 caused by melting plastic on electrical wires. Electrical problems in HVAC systems are dangerous 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 earlier, a dirty socks smell can happen when your evaporator coils need to be cleaned. You might experience this smell when your heat pump goes into defrost mode.
It’s common for your heat pump to have to turn on defrost mode during heating season. When the air is much cooler, frost can form quickly on the coils from condensation and impede heating. During defrost mode, your heat pump shortly switches to ac to remove the frost.
Having a Evenaire Heating & Air Conditioning HVAC technician clean the coils will help get rid of the smell.
Trust Us with Your Heat Pump Repair Needs
It can be confusing to troubleshoot your heat pump by yourself. Your comfort matters to us at Evenaire Heating & Air Conditioning, so you can count on our specialists to assist you when you need us. When you need heat pump repair in that you can rely on, call us at .