A furnace has a blower that blows all of the warm air into the air ducts and throughout the home. The blower and its motor works very hard to circulate the warm air. Therefore, it is not unusual for a blower motor to wear down and need to be replaced during the life span of your furnace. If you are noticing that your furnace blower isn’t running properly it may be time for the motor to be replaced. As replacing a blower motor can be an expensive repair, Hal Mechanical will share some of the common signs that your blow motor will need to be replaced.
Poor or Weak Airflow
There are a few signs that your furnace’s blower motor is failing and will eventually fail. As the blower motor begins to wear down, it will not be able to push the warm air through the air ducts with much force. Where you may feel a slight flow of warm air, there is often not enough to keep the house warm. There are a few other explanations for weak air flow which can include a dirty or clogged blower or a bad capacitor. To determine if the blower simply needs a bit of maintenance or needs the motor replaced, an HVAC technician will need to inspect the blower.
No Air Flow
One obvious sign that your blower motor has failed is when there is no air flowing from the air duct vents. When the blower isn’t running at all, you will discover that no air is coming through the air vents. In some cases, the blower motor may have lost power from a faulty relay or there might be a thermostat issue. However, if the motor has completely died it will not provide any airflow. This is a clear sign the motor needs to be replaced.
High Energy Bill
As a blower motor wears down and reaches the end of its life, it will require more power to operate. As a result you will notice your power bill gets higher and higher. A blower can become dirty and full of dust and the bearing in the motor can wear down. A blower and the motor does require a bit of maintenance to ensure energy efficiency. However, when the motor is beyond maintenance, and to help save money, it may be time to replace the motor.
Overheating & Burning Odor
When the blower motor overheats frequently, it will cause the furnace to shut down. Additionally, when a blower motor is overheating you can often detect a burning like odor. A blower motor will overheat most often due to aging and not functioning as efficiently as it once did. With proper maintenance you can help aid in the blower motor’s life span and efficiency. However, at some point the motor will wear down and often overheat, signaling the end of the motor’s life.