Motor manufactures make universal blower motors that can be wired to run at a wide range of settings depending how they are wired. … Shaft size: Most furnace motors use a 1/2 inch but sometimes they can be different.
Can I put a bigger blower motor in my furnace?
Yes, you can change your blower motor’s speed to try and improve your airflow if your blower motor is not already at the highest speed. On most blower motors the black wire is the high-speed wire.
How much should it cost to replace a furnace blower motor?
How much does a furnace motor replacement cost? On average nationwide, a furnace blower motor replacement costs $400-$600, including parts and labor. A single-speed blower motor costs around $450 to replace while a variable-speed motor costs $600+.
How can I tell if my furnace blower motor is bad?
Signs of an Overheating Blower Motor
- A “hot” or burning smell from vents in the home. This symptom is often coupled with the furnace shutting off completely. …
- Loud humming and other unusual noises. We have many homeowners call us mentioning humming and other odd sounds. …
- Furnace cycles off and refuses to restart.
Where is the model number on a blower motor?
You can find the model and serial numbers (M/N and S/N) for your furnace by removing the top-front service panel and looking to the left side of the interior cabinet or the top of the blower deck, depending on whether your system is an 80% or 90% AFUE unit.
How do I increase the speed of my blower?
You can increase or decrease the blower speed by slightly adjusting the pulley on the blower drive motor. To increase blower speed, slightly loosen the setscrew that holds the pulley to the driveshaft. Move or turn the pulley clockwise on the shaft one turn, then tighten setscrew.
How long do furnace blower motors last?
Both types of motors are built to last up to 20 years with minimal maintenance required. The primary reasons that a motor might fail before its time are overheating and excess moisture.
How long does it take to replace a blower motor in a furnace?
DIY or Pro Installation: It’s going to take a furnace repair technician between 45 minutes and 90 minutes to replace the motor, clean the fan, adjust the motor, test it and put the furnace back together. The biggest factor is how easy it is to get the assembly out.
Can a blower motor be repaired?
Blower Motor Replacement: When Good Parts Go Bad. … 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.
What does a bad blower motor sound like?
A defective blower motor will make a continuous sound noticeable by the passengers in the vehicle. It can manifest as a knocking, whirring, clunking, vibrating, squealing, or whining noise that persists until the blower motor is replaced.
How much does a blower motor cost?
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.
What does a bad furnace blower motor sound like?
Scraping: A scraping or metal-against-metal sound most often is caused by a loose or broken blower wheel, or a broken motor mount. … A distinct scraping sound is usually a sign you should call a furnace technician for repairs. Thumping: Thumping and vibrating sounds are the results of an unbalanced blower wheel.
How do you get a replacement motor?
The most accurate method to find a replacement motor is to cross-reference the manufacturer’s part number or model number from the motor itself. This number is usually found on the nameplate (label) of the motor along with the other nameplate data, such as horsepower, volts, etc.
Are blower motors interchangeable?
Finally, remember that blower motors also have universal replacements. Just remember that electric heat furnaces us 230-volt blower motors (in contrast, gas furnaces use 115-volt motors) and you’re good to go!
What type of motor is a blower motor?
There are two main types of blower motors: single-speed motors and variable-speed motors. Single-speed blower motors blow air at one speed. Variable-speed motors adjust their speed to blow air at varying speed levels. A properly functioning blower motor remains a critical component of your home’s HVAC system.