If you’re noticing a smell from your heat pump, it’s trying to tell you that something is up. We’ve developed a list of the most common six heat pump smells, what causes them and how you can correct 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. My Heat Pump Has a Musty Smell

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

2. My Heat Pump Has a Fishy Smell

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

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

Electrical problems are serious, so turn your heat pump system off as soon as possible at the breaker box and call us at 918-212-8943 for heat pump repair.

3. The Heat Pump Smells Like Sulfur

Often when you smell a rotten egg smell, you’re dealing with 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 Air Service Co. experts can eliminate the smell by cleaning your heat pump.

4. Your Heat Pump Smells Like Sewage

As we discussed earlier, your heat pump is electric, so any rotten egg smells are tied to a gas leak elsewhere. If your heat pump smells like sewer, you might be dealing with a backed-up or broken sewer line. We advise calling a company that does sewer line repair.

5. The Heat Pump Smells Burnt

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 troubles in HVAC systems are dangerous and could cause a fire. If you notice this smell, turn off your heat pump at the breaker and contact us at 918-212-8943.

6. Heat Pump Defrost Cycle Smells

Like we discussed previously, a dirty socks smell can happen when your evaporator coils need to be cleaned. You might experience this smell when your heat pump has defrost mode.

It’s common for your heat pump to have to turn on defrost mode during heating season. When the air is much colder, frost can form rapidly on the coils from condensation and restrict heating. During defrost mode, your heat pump shortly switches to ac to remove the frost.

Having a Air Service Co. 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 Air Service Co., so you can count on our experts to support you when you need us. When you need heat pump repair in Muldrow that you can rely on, call us at 918-212-8943.