Why does my furnace sounds like a washing machine?

Thumps and bumping noises, like an unbalanced washing machine, often indicate an unbalanced blower wheel or motor. This is a serious issue that requires immediate HVAC repair. The blower wheel and motor are major furnace parts and you don’t want them bouncing around.

What does a bad furnace blower motor sound like?





A thumping, banging or clanking sound could be the result of a loose or broken off part in the motor or blower assembly. Should you hear one of these noises, turn off your furnace immediately. Call a professional to examine and repair or replace the broken part before you turn your furnace on again.

Why is my furnace not staying running?

If your furnace doesn’t stay on, check the pilot light. If the pilot light won’t stay lit, a bad thermocouple could be to blame. You may need a professional to take a look and replace the malfunctioning part.

What type of noise do a capacitor make if going on a gas furnace?

Open the access panel to the furnace and listen for a relatively loud humming noise. If you hear that sound and it doesn’t stop, there’s an electrical difficulty. If you hear a “clicking” sound when the capacitor kicks in, that’s a problem too.

Why does my furnace sound like a vacuum?

This is often caused by the machine coming loose from its mount. Each motor in a furnace has a mount to keep it in place. When you hear a humming sound emitted that’s usually the case. The other problem might emerge from flimsy or bending ductwork.

Why does my furnace sound like water?





A bubbling or gurgling water sound coming from your indoor AC or furnace unit is usually an indication of a pressure issue. Improper internal pressure could be due to an overcharge of refrigerant (too much). It could also be the result of a refrigerant leak.

How do I know if my furnace blower capacitor is bad?

The clearest sign of a problem with a furnace capacitor is when the blower fans stop running. If your furnace comes on, but no air blows through the vents and you don’t hear the noise of the fans, then the trouble is either a burnt-out motor or a damaged capacitor.

How do I know if my blower motor capacitor is bad?

Signs & Symptoms of a Bad Capacitor on a Gas Furnace Blower

  1. Humming Sounds. The humming sounds created by the blower are indications that the capacitor has electrical problems. …
  2. No Power. A bad capacitor prevents the blower from functioning completely. …
  3. Erratic Motor Operation.

How do I know if my capacitor or fan motor is bad?



The fan won’t start even though the AC is on. The fan won’t stop, even when you shut the AC off. The fan turns on, yet the blades are rotating very slowly. There’s a rattling noise coming from the condenser unit when the fan is turned on.

What does a bad capacitor sound like?

The most common signs and symptoms of a bad AC capacitor include: AC not blowing cold air. AC takes a while to start once you turn it on. Humming sound coming from your air conditioner.

How much does it cost to replace a capacitor on a furnace?

The capacitor stores energy to spin the motor and get it going in your furnace. The average cost to repair or replace a blower motor capacitor is $150–$450.