Sleeve bearings work well when noise is a consideration and when the shaft load isn’t high which is especially true in residential direct driven blower and condenser fan applications. As with indoor fan motors, the technician always should try to find out why the fan motor failed before replacing it because voltage or moisture problems can cause a repeat failure and I’ve seen some very clean-looking condenser coils totally clogged between the fins where the dirt couldn’t be seen. Once the company has determined the right replacement for your blower motor, they’ll give you a quote and make arrangements for the installation. By closing this message or continuing to use our site, you agree to the use of cookies. Though these may be very hard to remove from the old motor, they absolutely must be put back on or replaced, or the new motor also will quickly fail. Yet, where there are lubrication ports on any HVACR motors, oiling them must be a regular part of any preventive-maintenance program. Because of the heat, probably the most common type of failure is caused by the lack of lubrication of the bearings. An aging, problematic, or dirty motor has to work harder to properly circulate conditioned air throughout your home, which leads to higher energy consumption. It can damage the … You will notice most outdoor fan motors have closed covers on the side that faces upward, but open covers to allow cooling on the side that faces downward. We can help you determine whether you should replace your current blower motor and provide the exact replacement model or a suitable universal model if necessary. All Rights Reserved BNP Media. 1. However, if any combination of them exceeds the design capacity, then the life It performs this task by spinning a fan, which causes air to move through the ducts and vents in your home. If the airflow coming out of the vents is weak, it can mean that your blower motor is having a hard time pushing enough air through the ducts to achieve your desired temperature. DIRTY FILTERS. Look out for these five signs suggesting it’s time to replace your HVAC unit’s blower motor: This is usually the first indication that you may have a faulty blower motor. The best way to determine the cause of the problem is to hire a qualified technician to inspect your system. A good HVAC company will suggest inspecting your blower motor first to ascertain whether it should be replaced. Examples include: using hammers to remove or install bearings, dropping or striking assembled equipment, and a bearing onto a shaft by applying force to the outer ring. Then the natural law comes into play: “You can’t compress a liquid.” So on some compressor designs, this destroys the internal valves. An evaporator (indoor) fan-motor failure almost always results in the indoor coil freezing over and the suction line freezing all the way back to the compressor. Jim Wheeler has been in the HVACR industry for more than 25 years. He has served as an industry teacher on technical topics, and as a writer and editor. A replacement blower motor is a substantial investment and plays an important role in creating a comfortable and healthy environment in your home. Instead of having to fork out money every now and then to pay for repairs, it may be more financially sensible to get a new motor. Component failure. However, outdoor fan motors have more stressful conditions to deal with because they operate in all kinds of weather and in much hotter conditions, and the design of their blades causes them to draw more power when there is any blockage, as with a dirty condenser coil. If the AC fan motor is bad or the capacitor is faulty, you should always contact an expert HVAC technician to repair or replace parts. ... resulting in inadequate lubrication and premature bearing failure. An evaporator (indoor) fan-motor failure almost always results in the indoor coil freezing over and the suction line freezing all the way back to the compressor. Dirt: Dirt is one of the major sources that cause damage to the electric motors. In this case, you’ll have to replace it with a new motor. He is currently available to speak or teach at industry events. If your blower motor is showing any of the aforementioned signs, consider contacting The Cooling Company to arrange an inspection or replacement. A clogged filter determine the cause of a Rotor when it ’ s a good chance the motor... Reducing these bearing troubles and motor failures a large volume of conditioned air an overheating blower motor: single-speed! 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