What Causes Blower Motor Failure? Like other components in your HVAC system, the blower motor can wear down over time. Some of the reasons a blower motor might fail are overheating, and excessive moisture. When dust, dirt, and debris build up, it can cause the windings and bearings to burn up more quickly.
What makes a blower motor go bad?
Blower motor breakdown can be the result of anything from old age to failed bearings, high amp draw, electrical failure in the windings, dirt accumulation, and more. “The most common cause is dirt accumulation due to lack of maintenance,” said Tom Beaulieu, president of Bay Area Services Inc.
How long do HVAC blower motors last?
10 to 20 years
How Long Does a Furnace Blower Motor Last? Blower motors are designed to last just as long as your furnace itself, anywhere from 10 to 20 years.
Why do AC blower motors fail?
The main causes of failure are loss of lubricant, a failed run capacitor, a failed bearing in a belt drive, a little water dripping into the windings or a voltage problem.
How do you know if your HVAC blower motor is bad?
5 Signs Your Blower Motor Needs to Be Replaced
- Weak Airflow from the Vents. This is usually the first indication that you may have a faulty blower motor. …
- No Airflow at All. …
- Unusually High Energy Bills. …
- Strange Sounds. …
- Overheating.
How much does it cost to replace HVAC blower motor?
Replacing a blower motor costs $450 on average with a typical range of $250 to $800. With a warranty, you might pay as little as $150 for labor alone. For high-end models, like those with large motors or access issues, you might pay as much as $2,000.
How much does it cost for a blower motor?
A blower motor replacement costs $300 to $900 on average if not under warranty or $200 to $400 for labor when under warranty. Replacing a large or variable-speed HVAC blower motor costs $600 to $1,500. Furnace or AC blower motor prices are $100 to $500 on average for the part alone.
Can a blower motor be repaired?
There are a number of things that can go wrong with your heating system, but if the air stops blowing altogether and the same is true on cold air settings, a blower motor replacement is likely in order. The good news is that it’s a fairly straight forward repair.
How do you troubleshoot a blower motor?
Quote from the video:
Quote from Youtube video: Now if by chance both windings read a measurable resistance that most likely means you have a mechanical issue with the blower such as a seized blower.
How do I know if my capacitor or fan motor is bad?
The fan won’t start even though the AC is on. The fan won’t stop, even when you shut the AC off. The fan turns on, yet the blades are rotating very slowly. There’s a rattling noise coming from the condenser unit when the fan is turned on.
What are the symptoms of a bad start capacitor?
The 7 Most Common Bad AC Capacitor Symptoms
- AC Not Blowing Cold Air. An air conditioner that doesn’t blow cold air is one of the first signs of a problem many homeowners notice. …
- High and Rising Energy Bills. …
- Humming Noise. …
- Old HVAC System. …
- AC Turns Off On Its Own. …
- AC Doesn’t Turn On Immediately. …
- AC Won’t Turn On.
Can a bad capacitor ruin a fan motor?
(This is called a “start/run capacitor” and they’re used in many A/C systems.) In either case, a bad capacitor will strain the fan motor and may cause it to burn out completely. Depending on your A/C unit, the same capacitor may be used for both the fan motor and compressor.
