Got A Squeaky Furnace? Find Out Why And How To Fix The Problem

If your furnace begins to squeak or squeal, it is telling you that something is amiss and it needs to be repaired. If you fail to take action and correct this problem, your entire unit could stop working. However, if money is tight or if you are fairly handy, you may be hesitant to call in a furnace repair company. Luckily, a squeaky furnace is typically something you can repair yourself. Here are a few questions you may be wondering about the topic and the answers.

Why is the Furnace Squeaking?

Unfortunately, there are a few reasons why a furnace may be squeaking or squealing. One of the most common reasons why a furnace is squealing is because it is dirty. Luckily, this is an easy fix. Shut the furnace off and vacuum or wipe away excess dirt and dust once the unit has cooled. If this doesn't solve the problem, the problem is likely a worn belt or a furnace blower motor that is in need of oil.

How Can the Furnace Blower Motor be Oiled?

If your furnace is squeaking, and you have cleaned the furnace, the next thing you will want to do is oil the furnace blower motor. If you have your unit serviced by a professional on a yearly basis, this service is done for you. If you have not had this service performed, there may not be enough oil in the motor which causes the squeaking noise you hear when the unit is in use. This part should be oiled on a yearly basis, preferably before the cold season hits and your furnace is used often. Oiling a furnace blower motor is something you can do yourself by following the steps below.

  1. Turn the furnace off and allow it to completely cool before touching it. If you touch it before it has cooled, you could burn yourself.
  2. Open the furnace door to access the internal parts of this unit. You may need a screwdriver or wrench to open the door depending on what types of screws or bolts are holding the panel in place.
  3. Look at the base of the unit and locate the blower motor assembly. The assembly is on the base of the unit and you will see a ball or egg-like shape sitting on the base. This is the motor. Once you have found the motor, you will have to decide if you have enough space to reach in and oil the motor without removing it or whether you will have to remove it. The amount of space you have varies on your hand size and the make and model of furnace you have. If you don't have enough space to reach in and oil the motor, you will have to use a wrench to remove the screws that are holding the motor to the assembly base.
  4. Place a few drops of a non-detergent lubricant oil made specifically for a furnace blower motor into the oil ports. The oil ports are small holes within the motor that are clearly labeled as with the word oil on them. There may be two or three ports on your furnace, depending on the size. Only place a few drops of oil in the ports as over-oiling can lead to issues. If needed, reconnect the motor to the assembly base.
  5. Turn your furnace back on and allow it to run for at least 30 minutes so the oil is distributed.

The Blower Motor Was Oiled But is Still Squeaking. Now What?

Unfortunately, a furnace may also squeak or squeal when belts are worn out or need to be replaced. Finding a worn belt and replacing it can be a challenging job and is not one that most people can do on their own. If you have cleaned your furnace and oiled the blower motor, yet the furnace is still squeaky, it is time to call in a professional heating service company to evaluate and fix your furnace.

A squeaky furnace should never be ignored. This is your furnace's way of telling you something is wrong. Fortunately, it may be something you can fix on your own. Cleaning and oiling the furnace may solve the problem. However, if it doesn't quiet the machine, you will want to call in a professional from a company like R & B Heating & Air Conditioning to keep your furnace running effectively and efficiently.