If you’re discovering 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 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. Your Heat Pump Has a Musty Smell

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

2. Your Heat Pump Smells Like Fish

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

  • Overheated motor
  • Wiring problem
  • Plastic components or coating is melting
  • Other mechanical difficulties

Electrical problems are dangerous, so turn your heat pump system off right away at the breaker box and call us at 631-460-5159 for heat pump repair.

3. My Heat Pump Smells Like Rotten Eggs

Usually when you smell a rotten egg smell, you have a gas leak. But your heat pump doesn’t run on natural gas. If your heat pump smells like sulfur, a little animal may have creeped inside it for warmth and died. One of our Fal-Ken Heating & Cooling Corporation experts can eliminate the smell by cleaning your heat pump.

4. My Heat Pump Smells Like Sewage

As we mentioned before, your heat pump is electric, so any rotten egg smells are tied to a gas leak somewhere else. If your heat pump smells like sewer, you might have a backed-up or broken sewer line. We recommend contacting a company that does sewer line repair.

5. Your Heat Pump Smells Burnt

You might be dealing with an electrical problem 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 troubles in HVAC systems are serious and could cause a fire. If you notice this smell, turn off your heat pump at the breaker and call us at 631-460-5159.

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 is in defrost mode.

It’s ordinary for your heat pump to have to turn on 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 Fal-Ken Heating & Cooling Corporation HVAC technician clean the coils will help eliminate the smell.

You can Count on Us for Your Heat Pump Repair Needs

It can be difficult to troubleshoot your heat pump by alone. Your comfort matters to us at Fal-Ken Heating & Cooling Corporation, so you can count on our professionals to assist you when you need us. When you need heat pump repair in Holbrook that you can count on, call us at 631-460-5159.