If you’re recognizing a smell from your heat pump, it’s trying to tell you that something is up. We’ve put together 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 Like Mold

If your heat pump smells musty, there’s likely mold growing on moist evaporator coils or in the ductwork. This heat pump odor is often called dirty sock syndrome. You can deter 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 a couple of things wrong:

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

Electrical problems are dangerous, so turn your heat pump system off immediately at the breaker box and call us at 816-249-1619 for heat pump repair.

3. Your Heat Pump Smells Like Sulfur

Normally when you smell 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 crawled inside it for warmth and died. One of our Myers Furnace Company experts can remove the smell by cleaning your heat pump.

4. The Heat Pump Smells Like a Sewer

As we discussed before, your heat pump is electric, so any rotten egg smells are linked to a gas leak elsewhere. If your heat pump smells like sewer, you might have a backed-up or broken sewer line. We suggest calling a company that does sewer line repair.

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

You might be dealing with an electrical concern 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 troubles in HVAC systems are unsafe and could cause a fire. If you notice this smell, shut off your heat pump at the breaker and contact us at 816-249-1619.

6. Heat Pump Defrost Cycle Smells

Like we discussed above, a dirty socks smell can happen when your evaporator coils need sanitizing. You might experience this smell when your heat pump goes into defrost mode.

It’s ordinary for your heat pump to have to use 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 temporarily switches to cooling to get rid of the frost.

Having a Myers Furnace Company HVAC technician clean the coils will help get rid of the odor.

Trust Us with Your Heat Pump Repair Needs

It can be confusing to troubleshoot your heat pump by all by yourself. Your comfort matters to us at Myers Furnace Company, so you can count on our specialists to assist you when you need us. When you need heat pump repair in Belton that you can depend on, call us at 816-249-1619.