I always took my home's heating and cooling system for granted. That is until I found myself battling one of the hottest days in years and my air conditioner simply refused to turn on. After contacting my local HVAC contractor, I learned that my cooling coils had frozen over from a lack of maintenance. He did get my AC back up and running that day, but he also helped me to look at my heating and cooling system in a whole new light. I have spent a lot of time over the last few years learning more about how to properly maintain my HVAC system and ultimately lower my energy costs. Today, I would like to share this knowledge with you so that I can help you to avoid some of the costly mistakes I have made in the past.
If your home feels colder than usual, oil your old electric belt-driven furnace's blower motor now. Sometimes, older electric furnaces put out cold air because the blower motor lacks sufficient lubrication to operate properly, and the part burns more oil than usual because of its age. Eventually, the motor overheats and struggles to transfer cool air to the heating elements inside the appliance. As a result, your home feels drafty and cold. Here's why your furnace's blower motor overheats and what you can do to solve the problem.
Why Does Your Blower Motor Overheat?
The blower motor is one of the most critical pieces of your furnace. It receives and transfers cool air to the elements that heat your home. If you use your furnace all winter long without maintaining it regularly, the blower motor fills with excessive heat. One of the things you can do to help your blower fan cool down during operation is to keep it lubricated with oil. Oil prevents friction between the metal pieces that support the motor when you use your furnace.
When the oil runs low or dries up, the metal pieces rub against each other as the motor operates. If the parts overheat too much, the motor smokes and makes scrubbing, rattling or other strange noises. You may notice a burning odor in your basement or coming through your air vents as the appliance overheats.
Motors that lack oil also create problems in the blower fan, because it has to work harder to cool down the motor. If the blower fan stops working, your furnace is in danger of breaking down. You can locate and oil the blower motor without too much trouble.
How Do You Oil the Blower Motor?
To find your blower motor, cut power to your furnace for safety, then remove the back paneling over the lower half of the appliance's housing with a cross slot screwdriver. Once your remove the paneling, don't pull the blower motor out of its compartment. You want to see if the motor is too hot to touch or fill with oil.
Carefully, place your hand about 2 inches away from the motor. If you feel heat, then wait about one hour for the motor to cool off. You can also place a nonflammable rag or cloth on the motor to see if it's too hot. If the rag or cloth feels hot or even warm after you remove it, wait until the part cools.
You need to use multi-purpose household oil to place inside the motor, because it doesn't contain caustic ingredients that can break or wear down the part. To find and oil the ports do the following:
If your home feels warm and comfortable, you successfully solved your furnace's problem.
If your home still feels drafty and cold, contact a professional heating contractor, such as Allied Air Conditioning & Heating Corp, for services. Your old furnace may have other problems, such as a damaged heating element, that needs addressing.Share
4 November 2015