If you’re recognizing a smell from your heat pump, it’s attempting to tell you that something is up. We’ve developed a list of the top six heat pump smells, what causes them and how you can fix them.

  1. Heat pump smells musty
  2. Heat pump smells like fish
  3. Heat pump smells like sulfur
  4. Heat pump smells like sewer
  5. Heat pump smells like burning
  6. Heat pump defrost cycle smells

1. Your Heat Pump Smells Musty

If your heat pump smells musty, there’s probably mold growing on damp evaporator coils or in the ductwork. This heat pump odor is often known as dirty sock syndrome. You can avoid this by scheduling regular heat pump maintenance and air duct cleaning.

2. The Heat Pump Has a Fishy Smell

If your heat pump smells like fish, there could be several things wrong:

  • Motor is too hot
  • Wiring problem
  • Plastic components or coating is melting
  • Other mechanical difficulties

Electrical problems are dangerous, so shut your heat pump system off immediately at the breaker box and get a hold of us at 270-358-3167 for heat pump repair.

3. Your Heat Pump Smells Like Sulfur

Normally 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 tiny animal may have creeped inside it for warmth and died. One of our Phelps Heating & Cooling, Inc. technicians can remove the smell by cleaning your heat pump.

4. The Heat Pump Smells Like a Sewer

As we reviewed 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 currently have a backed-up or broken sewer line. We recommend getting in touch with a company that does sewer line repair.

5. The Heat Pump Has a Burnt Plastic/Rubber Smell

You might have an electrical issue if your heat pump smells like burning, burning plastic or burning rubber. This burning smell can be due to melting plastic on electrical wires. Electrical problems in HVAC systems are unsafe and could result in a fire. If you notice this smell, turn off your heat pump at the breaker and get a hold of us at 270-358-3167.

6. Why Your Heat Pump Defrost Cycle Smells

Like we mentioned previously, a dirty socks smell can happen when your evaporator coils need sanitizing. You might notice this smell when your heat pump is in defrost mode.

It’s typical for your heat pump to have to switch on defrost mode during heating season. When the air is much colder, frost can form fast on the coils from condensation and restrict heating. During defrost mode, your heat pump temporarily switches to air conditioning to remove the frost.

Having a Phelps Heating & Cooling, Inc. HVAC technician clean the coils will help get rid of the odor.

Trust Us with Your Heat Pump Repair Needs

It can be difficult to troubleshoot your heat pump by all by yourself. Your comfort matters to us at Phelps Heating & Cooling, Inc., so you can count on our specialists to assist you when you need us. When you need heat pump repair in Hodgenville that you can rely on, call us at 270-358-3167.