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Air Comfort Solutions Blog

5 Noises You Don’t Want Your Heater to Make

Winters are becoming colder and harsher than before. This underscores the importance of a working water heater that should be regularly checked for maintenance.

If your water heater has started making strange noises, then it may be time to get a professional heater repair service in Oklahoma City, OK. In this blog, we go over 5 noises that you don’t want your heater to make and if it does, get a hold of an expert.


Screeching sounds are bad and limit the motor’s function. The sound indicates that the blower motor is starting to malfunction.

A failed blower motor will prevent the heat from circulating around your home. The heater will try to compensate it by staying on longer, which will cause further defects in the system.

There are many reasons why the motor could be making the screeching noise. It could be due to lack of lubrication or problems with the fan. Hire a professional to open it up for a thorough examination.

Rumbling or Banging

If you turn your heater on and hear banging noises, like a rainstorm is approaching, then that suggests problems with the burners or furnace. The noise may not seem much but it could be quite dangerous.

Over time, grime and dirt builds up in your heater. This causes the ignition system to become delayed.

When you turn the heater on, gas builds for a few seconds before it ignites. This causes a small explosion inside the furnace which damages the heat exchanger. If the heat exchanger is cracked due to these explosions, it can cause carbon monoxide to leak inside your home.

This can be quite hazardous so get it fixed as soon as you can.


Mild humming sounds are common in most heaters. However, if you hear an odd or new type of humming that wasn’t common before, it could indicate bigger problems developing inside.

Loud humming could be caused by damage to the electrical components. You should never ignore electrical circuit problems because they cause bigger, more expensive problems later when left unchecked.

So get an HVAC professional to check your heater before it gets worse.

Hissing or Whistling

Hissing or whistling sounds are generally caused by air being forced out through a small opening. This happens in three cases.

  1. The piping has developed a small crack and hot air is leaking out from somewhere.
  2. The gas is getting hotter than it is supposed to, causing an increase in pressure.
  3. The piping or filter has become clogged with grime or charcoal etc.

The problem is not potentially hazardous, but it does lower the efficiency of your heater, increasing bills. Your rooms will also take longer to reach the desired temperature in winter.


Lastly, you may hear clanging sounds from the heater that resembles metal hitting against another metal surface. This usually happens when some component inside the heater has become free of its housing and starts bouncing around in the system. 

The fix could be anything from tightening the component to complete replacement of the parts.


If your heater has become noisier than usual then you should never ignore it. Strange new sounds coming from the heater are the first signs of trouble. We strongly suggest getting a professional to keep the problem from escalating.

Get in touch with our team for the best and most reliable heater repair in Oklahoma City, OK

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