It could also be closed or partially closed vents or dampers, or an obstruction in the ductwork. There are a few possible causes for this problem. Question: The furnace blower does not seem to be as powerful as before. It does not take much to put one out of balance, and sometimes it is a wrestling match getting the wheel of a old motor. When you replace a blower motor, it’s good practice to replace the wheel as well. If the blower wheel is out of balance that can take out blower motors, I’ve seen in as quick as 1 year. If that’s the case it will continue to take out blower motors. Remember that blower motor is moving a lot of weight, thousands of pounds of air per hour and if you don’t have the right amount of return and supply air for the unit the motor can be put under a lot of added stress. If the ductwork is not right it can put a lot of strain on the blower motor. There are a number of reasons why a blower motor could go bad. Question: Why might the blower motor go bad in a Trane XL90 Furnace?
Lennox furnace parts blower motor manual#
Consult your furnace owner’s manual for directions on properly oiling your blower motor and other maintenance suggestions. If your furnace has a PSC motor, a licensed contractor should regularly lubricate the blower motor with oil ensures that the fan is able to turn easily (ECM motors use ball bearings and therefore require little or no oiling). To prevent such problems, regular maintenance is important. This happens because the air is being warmed by the furnace but not dispersed into your home.
HVAC technicians say that one of the first indicators that your blower motor is in need of maintenance is that your furnace is running non-stop while your house remains cool. ECM motors, which are comparatively new to the scene having been introduced in the 1980s, are more efficient than PSC motors, even when used in single-speed applications, according to HVAC technicians. ECMs are used primarily in variable speed furnaces as they are controlled by a microprocessor within the unit that signals as to how much heat is needed. You also might see furnace manufacturers advertising permanent split-capacitor (PSC) motors versus electronically commutated motors (ECM). Operating at this low speed also helps to minimize the unit’s noise. In addition, by operating at a low speed for long intervals, these motors are more frequently circulating the air in your home than their single-speed counterparts and preventing cold spots. Furnace manufacturers say that these variable speed motors provide better energy efficiency because they are able to operate at lower speeds when appropriate, thereby consuming less energy than single-speed motors. Because they operate at only one speed, these motors are using the maximum amount of energy when turned on.Ī variable speed blower motor, however, moves at different speeds to better control the flow of air throughout your home. Single-speed motors turn on when the thermostat indicates the interior temperature has dropped and turn off when that temperature has been reached. Motor Operationīlower motors work in one of two ways: as single-speed or variable speed blower motors. It’s up to this device to ensure that your home reaches the temperature set on your thermostat. If you ever need assistance choosing the right Blower Motor, Gaskets Burner, Electric Heat Kit, Flame Sensor, Flue Part, Gas Valve, Heat Exchanger, Ignitor, Induce Draft Blower, LP Conversion Kit, Pilot Burner, Pilot Orifice, Pressure Switch, Thermocouple, Blower Part, Cabinet Part, or Control Board please contact us via Live Chat or call us at 1-86.Once your furnace has heated the air within it, the blower motor is responsible for turning a fan to circulate that warm air out of the furnace and into your home. We have a knowledgeable and friendly staff ready to assist you. We sell original equipment manufacturer (OEM) parts from most brands, including Lennox, Carrier, Bryant, Rheem, Ruud, Goodman, Armstrong, Trane, York, etal.
is your #1 internet source for HVAC repair parts. In this section you can find the blower motor that fits your furnace application. Some motors use a capacitor on start and others use blower motor modules to control start and run operations. Your furnace may have a variable speed motor or a dual speed motor or a fixed speed motor. The blower motor circulates air through the furnace or air handler heating and cooling the home.