If you’re noticing a smell from your heat pump, it’s trying to tell you that something is up. We’ve created a list of the most popular six heat pump smells, what causes them and how you can repair 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. The Heat Pump Smells Musty

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

2. The Heat Pump Smells Fishy/Rotten

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 as soon as possible at the breaker box and call us at 201-579-2562 for heat pump repair.

3. My Heat Pump Has a Rotten Egg Smell

Often when you are dealing with a rotten egg smell, you’re dealing with 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 ACE Solutions technicians can eliminate the smell by cleaning your heat pump.

4. My Heat Pump Has a Sewage Smell

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 currently have a backed-up or broken sewer line. We suggest contacting a company that does sewer line repair.

5. The Heat Pump Smells Burnt

You might be dealing with 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 issues in HVAC systems are dangerous and could lead to a fire. If you notice this smell, shut off your heat pump at the breaker and contact us at 201-579-2562.

6. Heat Pump Defrost Cycle Smells

Like we mentioned above, a dirty socks smell can happen when your evaporator coils need to be cleaned. 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 cooler, frost can form fast on the coils from condensation and restrict heating. During defrost mode, your heat pump shortly switches to cooling to get rid of the frost.

Having a ACE Solutions HVAC technician clean the coils will help get rid of the smell.

You can Count on Us for Your Heat Pump Repair Needs

It can be confusing to troubleshoot your heat pump by alone. Your comfort matters to us at ACE Solutions, so you can count on our specialists to assist you when you need us. When you need heat pump repair in Hasbrouck Heights that you can count on, call us at 201-579-2562.