If you’re noticing 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 common 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. My Heat Pump Smells Like Mold

If your heat pump smells musty, there’s probably mold growing on wet evaporator coils or in the ductwork. This heat pump odor is often called dirty sock syndrome. You can prevent 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 a few things wrong:

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

Electrical problems are unsafe, so turn your heat pump system off right away at the breaker box and call us at 419-465-8722 for heat pump repair.

3. The Heat Pump Has a Rotten Egg Smell

Usually 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 gotten inside it for warmth and died. One of our Ohler & Holzhauer Inc. technicians can eliminate the smell by cleaning your heat pump.

4. My Heat Pump Has a Sewage Smell

As we reviewed 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 have a backed-up or broken sewer line. We advise contacting a company that does sewer line repair.

5. My 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 due to melting plastic on electrical wires. Electrical problems 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 get a hold of us at 419-465-8722.

6. Why Your Heat Pump Defrost Cycle Smells

Like we discussed previously, a dirty socks smell can happen when your evaporator coils need sanitizing. You might experience this smell when your heat pump has 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 quickly on the coils from condensation and interfere with heating. During defrost mode, your heat pump temporarily switches to ac to remove the frost.

Having a Ohler & Holzhauer Inc. HVAC technician clean the coils will help get rid of the smell.

Trust Us with Your Heat Pump Repair Needs

It can be confusing to troubleshoot your heat pump by alone. Your comfort matters to us at Ohler & Holzhauer Inc., so you can count on our professionals to assist you when you need us. When you need heat pump repair in Port Clinton that you can count on, call us at 419-465-8722.