Why It's Important to Have Your Blower Motor serviced annually

Update:09 Nov 2021

Blower motors are one of the many types of fans in cool […]

Blower motors are one of the many types of fans in cooling systems. They work best when the fans are blowing air into a room, which makes them especially useful in hot climates where indoor air conditioning systems are used to cool homes. The blower motor is basically the fan which rotates or blows heated air through dashboard radiators according to the climate set and the selected fan speed. Changing the fan's speed either sends a signal to the blower motor or to the evaporator coils to either speed up or reduce the speed.

Typically, these fans use three to five horsepower units, and they have variable-speed fans which are capable of variable speed operation. The control for the variable-speed blower motor can be done by a single switch or a series of switches on the circuit breaker. There are also variable-speed blowers with four or five horsepower units and they can operate using either variable or constant speed controls. Many electric cooling fans also use liquid cooling systems such as water-based coolant, antifreeze, or oil.

Blower motors are designed to be very robust and have very little mechanical parts or components to break. Typically, the bearings and connecting rods are made from steel or aluminum. Two main styles of single-speed blower motors exist, single-speed and variable-speed. They operate in the following ways: in a continuous-circuit mode; by fan rotation; and by a phase conversion method. Single-speed blower motors have only one speed control circuit, while variable-speed blowers have two speeds and are usually found in businesses that require cooling in more than one location.

Blower motors usually come in the form of a rotor with two or more fins. The rotor has paddings that are connected to a fan blade. There may be a control switch that allows the fan blades to rotate or to reduce fan speed. There is also a fixed resistor that connects the motor output to a power source. The resistor limits the voltage produced by the blower motor.

A qualified HVAC technician will examine your system and determine if you need any servicing or maintenance. A blower motor usually requires only routine cleaning and lubrication. It is recommended that you allow the HVAC system to run at normal operating temperature for approximately twenty hours prior to servicing or checking the fans. If you don't service your HVAC system, it could seriously affect the performance of the blower motors and other components.

Your HVAC system should have a thermostat and a blower motor that work in unison to provide efficient heating and cooling. A malfunctioning one can cause expensive damage to your HVAC unit. By avoiding a serious problem in your HVAC system, you can prevent costly repairs.