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Heater Blower Motor

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Your Professional Heater Blower Motor Manufacturer in China

HUAHAO group specializes in the research and development and manufacture of motors & blowers. Our services are widely applied to the fields of home appliances: Range hood, industrial heater, Air cooler, Air condition, Air purifier, dehumidifier…etc and other ventilation systems

Support Customization

We can provide personalized solutions for each customers, we offer these products in varied specifications in order to meet the variegated requirements of our esteemed clientele.

Quality Oriented

We control the product quality critically for every step by our QC department, and these products are rigorously tested by our experts at our in-house testing unit, we have passed CE, ROHS and other certificates.

Excellent Service & Support

We have extensive experience in installation and commissioning, our engineer department will help with any questions about the products.

 

Advance Technology

Over the years we have gained specialization in designing and manufacturing of the motors and blowers to suit the different application and environment.

 

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Kitchen Vent Extractor Fan

What is Heater Blower Motor

 

A heater blower motor uses a unique “squirrel cage” design to draw air into a vehicle’s climate control system, and force it into the various vents. This air will pass through either the heater or evaporator core based on the needs of the passenger and car. The blower motor requires a high amount of amperage, controlled by a switch in the climate control center and a blower motor resistor.

How Does a Heater Blower Motor Work

 

Thermostats work with the home heating and cooling systems to monitor the temperature. When the temperature drops below the thermostat setting, it signals the furnace to get to work. The furnace creates hot (or cold) air, which then needs to circulate around the various rooms of your home. This is when the blower motor engages.
A blower motor takes the heated or cooled air created within the furnace and circulates it throughout the home in order to ensure the temperature reaches what’s called for on the thermostat. It does this by spinning a fan, which blows the air through the ventilation system of your home. Even a small blower motor can move a large volume of air.
Single-speed motors operate at one speed, and full energy capacity when in use. The thermostat tells your blower motor when to turn on and off. Occasionally, single-speed motors result in cold spots because they only run when signaled by the thermostat. Conversely, variable-speed motors blow air higher and lower speeds, when desired. Therefore, this motor helps create a more evenly distributed temperature throughout your home. Plus, variable-speed motors are typically more energy efficient than a single-speed motor, which helps save on your monthly energy bills.

Oil Burner AC Motors

 

Parts of a Heater Blower Motor

 

The blower motor comprises an electric motor and fan assembly. The motor rotates the fan, helping to draw and push air through a system containing a heater core, evaporator, and ducts. Below is a list of the main blower motor parts including the function of each

Electric Motor

The most essential part of the blower assembly is a 12V DC motor, which can either be brushed or brushless. If your car is an older model, it probably uses a brushed motor. The AC fan blower motors in newer cars are usually brushless. These are more efficient, low maintenance, and allow for infinite speed levels.

Motor Blower Housing

The car air blower housing is the cover around the motor, sometimes even the entire blower assembly. It protects the motor and forms the surface by which you mount the device. The housing is normally made from metal for strength and rarely gets damaged. To prevent corrosion, it’s usually coated or painted.

Blower Wheel

This is the fan that rotates to draw air and push it through the HVAC system. It’s usually a round wheel made of plastic and ribbed to create the blower blades. The blower wheel assembly must be clean and free from debris for the blower motor to function properly. If jammed by debris, the result can be a burnt out motor or broken blades.

 

Common Types of Heater Blower Motor
 

Shaded Pole Motors
The oldest type of blower motor, this AC induction motor is neither efficient nor particularly flexible. It uses a single coil assembly (winding) to turn the rotor, which accounts in part for its inefficiency. On the upside, this type of blower motor is cheap and reliable.

 

Permanent Split Capacitor Motor (Psc Motor)
This is another type of AC induction motor usually found in less efficient HVAC systems or those older than 10 years. This motor has two windings, which combined with other design elements, improves its efficiency. Although a PSC motor is approximately twice as efficient as a shaded pole motor, its efficiency averages only around 50 percent. This motor is also less efficient at lower speeds.

 

Electronically Commutated Motor (Ecm)
These brushless DC motors are the most efficient and flexible blower motors available today. ECMs average around 80 percent greater efficiency than PSC motors. You’ll often see ECMs referred to as variable-speed motors because they can adjust their speed to more effectively meet your cooling and heating demands. They’re efficient at all speeds, so they run at lower speeds for longer periods than systems with PSC motors. This keeps your home’s temperature consistent and helps control humidity.

 

Applications of Heater Blower Motor
 

A heater blower motor is mainly used for cooling devices and electrical equipment.
Example usages in commercial products

Vent Hood Fan Motor Assembly

Air Intake
Air intake at manufacturing plants where machinery such as presses or welding machines are used.

Suction
Suction to hold objects in place at food, textile, and other such manufacturing plants.

Vacuum gripping
Suction for vacuum packing vegetables or to hold and lift paper or other processing materials.

Transportation
Transportation in equipment such as pneumatic tubes or powdered material transporters.

Dust Extraction
Dust extraction at manufacturing plants where grinding is performed or powdered materials are used.

Ventilation
Ventilation at worksites, trains, clean rooms, etc.

Air Supply
Supply of air to gas burners, incinerators, or medical equipment.

Blowing
Blowing for pipe cleaning, sandblasting, etc.

Aeration
Aeration of septic tanks or oxygen supply to aquaculture ponds.

Drying or Cooling
Drying or cooling processing materials on a production line.

Example usages for automotive:
●Seat ventilation blower
●Seat heating/cooling blower
●HVAC blower
●DC-DC converter cooling blower
●HEV/EV battery cooling blower
●Fuel cell oxygen supply blower
●Air purifier blower

Kitchen Hood Exhaust Blower Motor
 

 

 
 
Signs of a Bad Heater Blower Motor
Gas Heater Fan Motor

Inadequate Airflow Through the Vents

If you notice little or no airflow coming from your car vents, you likely have a failing heater blower motor. When the heater blower motor is damaged or worn out, it will not generate sufficient airflow for efficient heating or cooling.

Plastic Package Motor for Air Purifier

Unusual Noises or Vibrations When the Fan is Running

If you hear unusual noises such as rattling and grinding, or notice vibrations within the dashboard or interior trim, you could have a bad motor blower heater. However, these symptoms could also be caused by fluid leaks, a damaged impeller blade, or even debris in the motor so it’s best to have you car looked at by a professional mechanic.

Cooker Hood Motor

Defroster Does Not Clear Glass Well

If your defroster does not clear your windshield well, it could be a sign of a faulty heater blower motor. This can make it difficult and unsafe to drive, so it’s essential to have a professional mechanic make any needed repairs as soon as possible.

Hood Fan Motor

Smoke or Burning Smell Coming Out of the Vents

A damaged heater blower motor can also cause smoke or a burning smell to come out of your vents. If this happens, it is best to keep your heating and air conditioning system off and have the issue repaired as soon as possible.

 

 
What Causes Heater Blower Motor Failure

 

A blower motor can fail for several reasons, including

 

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Moisture Buildup
Water in the wrong places can spell trouble for your blower motor. Moisture can corrode metal components and lead to electrical shorts that can severely impact the motor’s performance.

Blower Motor Resistor or Fan Concerns
Problems with the resistor or fan can affect how the motor responds to demands for more or less air. These issues can lead to system inefficiencies and require professional repair.

Temperature Control Problems
If the motor can’t properly regulate the temperature, it might run constantly, which can cause wear and tear and eventually failure.

Debris Accumulation

Dust and dirt clogging parts of the motor can cause it to overheat or fail altogether.

Worn-out Bearings

Bearings reduce friction in the motor. When they wear out, they overwork the motor, leading to premature failure.

Electrical Challenges

Faulty wiring or other electrical problems can lead to intermittent motor operation or a total breakdown.

Old Age

Like any mechanical device, blower motors have a finite life span. As they age, parts wear out and failure becomes more likely.

 

How to Maintain Heater Blower Motor
 

Bearing and Lubricant Condition

Monitor and log bearing temperatures, lubricant level and vibration. Lubricant should be clear with no signs of bubbling. If bubbling is occurring, this is a good indication to add more lubricant to decrease the temperature of the bearings. If there is an increase in vibration in the bearings, this may be a good indicator of impending bearing failure.

Chimney Hood Ventilation Fan
Exhaust Hood Motor

Shaft Seal Condition

Check the mechanical seals. There should be no signs of visible leakage.
During downtime, inspect the pump’s packing to make sure there is adequate lubrication. Then, if the packing looks compressed and dry, replace the packing and add lubricant per the operation manual.

Replace Filters

This simple solution helps prevent nuisance issues and downtime related to dirty fan blades, motors, coils and heat exchangers.

Ac Centrifugal Blower
Chimney Hood Ventilation Fan

Air Flow

Ensure all return air registers are open a free of blockage. Lack of air flow will decrease a motor’s efficiency and cause nuisance shutdowns.

 

 
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Common Problem of Heater Blower Motor

 

Q: What is heater and A/C blower motor?

A: A blower motor, also commonly referred to as an air conditioner (A/C) blower motor, heater blower motor, or a heater fan motor, is a major component to your vehicle’s heating, ventilation, and air conditioning (HVAC) system. It is controlled by the knobs or buttons on the climate control unit. When your heat or A/C is turned on, it is what forces the cold or warm air from your vehicle’s A/C and heating system through the interior vents, circulating it throughout the cabin. If your heat or A/C is turned off, the blower motor is just hanging around doing nothing. Even if a vehicle is not equipped with an air conditioning system, it will still have a blower motor assembly in order to circulate the outside air inside of the cabin, in addition to the heat.

Q: How is heater and A/C blower motor done?

A: If the blower motor doesn’t work at all, the blower motor itself must be tested first. Typically it’s done by measuring the voltage at the blower motor connector when it’s turned on. If there is a voltage at the motor, but the motor doesn’t run, the motor is bad or jammed. Most of the time it is as simple as finding the motor underneath the glove compartment or removing the glove compartment box to access it. The blower motor can usually be removed by loosening the screws or bolts on it and by disconnecting the motor harness. To reinstall, simply insert the blower motor in place, reconnect the motor wiring harness, and push the glove box in place if needed.

Q: What are the symptoms of a faulty heater blower motor?

A: If no air comes out of the vents when the climate control is commanded on, then the blower motor has likely burned out. Water intrusion into the air inlet, high moisture in the air or a clogged cabin air filter will make the blower motor work harder, draw higher amperage, and ultimately overheat. The big problem here is the amperage draw may also overheat and burn the resistor and the control unit.

Q: How severe is a faulty heater blower motor?

A: Not a problem that will leave you stranded on the side of the road, but in the lows of winter or the highs of summer, a non-working blower motor may make traveling quite uncomfortable. If you don’t want to sweat or shiver, then find a good mechanic. The replacement of the blower motor is common and straightforward, so most shops will perform the repair-many on the same day.

Q: What is the mechanism of blower motor?

A: The blower motor is the fan that pushes heated or cooled air through dashboard vents based on the climate system settings and the fan speed selected. Adjusting the fan speed sends a signal through a resistor to the blower motor to either pick up the pace or slow it down. The blower motor resistor adjusts the amount of current going to the blower motor based on the selected fan speed. When a blower motor fails, only a small amount of air will come through the interior vents based on the amount of outside air entering the climate system. If the fan doesn’t work, before pointing the finger at the blower motor, check fuses for the motor to make sure they’re still good. Many vehicles have two fuses for the blower motor, one in the interior fuse block and the other under the hood. The blower motor is usually under the dashboard on the passenger side. Blower motors that make loud squeaks or rattling noises may be worn out and on the verge of packing it in, but sometimes those noises are caused by leaves or other debris that can be cleaned out after the motor is removed from the vehicle.

Q: What can cause a blower motor to stop working?

A: There are a few reasons why your blower motor may stop working:
A Bad Fuse: The most common reason why your blower motor won’t work on any speed is that you have a bad or blown a fuse. The most common reason why your blower motor won’t work on any speed is that you have a bad or blown a fuse. A fuse is a small wire inside of a connector that is used to protect the motor itself from a surge of electricity.
Bad Ground Connection: The next reason that your blower motor may not be working is that it might have a bad ground connection. To test this, you can run a fused jumper from a battery to the power side of the motor and attach a temporary grounding jumper to the other motor terminal.
Bad Speed Control Module: The speed control module is responsible for controlling the speed of the motor. This is true for variable speed motors. If the speed control module goes out, then the motor will not run. To test the control module, you can disconnect the electrical connector at the blower motor. Also, disconnect the jumper power and ground connections. You want to bypass the speed control. Then run a fused jumper from a battery to the power side of the motor and connect a temporary grounding jumper to the other motor terminal.
Bad Motor: Sometimes blower motors do go out. If none of these past things seem to be the problem, then the last bit is that you have a bad motor. It is actually pretty uncommon for the motor to go out itself before something else and you normally have a warning when it is about to fail because it will start running poorly and squeak or slow down and things, but sometimes blower motors do go out.

Q: What is the primary responsibility of a blower motor?

A: A blower motor turns the fan in your HVAC unit, which causes the outgoing air to circulate out of the system and into the rooms of your home. The blower motor is the part of your HVAC system that gets your home to the temperature set on your thermostat.

Q: How important is a heater blower motor?

A: The HVAC blower motor is the heating and cooling systems component that sends conditioned air from the furnace, heat pump, or air conditioner into the home. Once the system heats or cools the air, the blower motor forces it through the duct system and out the vents in rooms throughout the house.

Q: What causes heater blower not working?

A: If the heater isn't blowing hot air at you when you turn the system on, the blower fan might have a problem. Either it's not getting electrical power or, more likely, the motor itself has simply burned out. A blower motor in an older vehicle is likely to burn out over time, and may need replacement.

Q: Can a blower motor be repaired?

A: It is best to have an HVAC professional evaluate the issue to know if the weak airflow is caused by the blower motor, dirty or leaky ducts, or a clogged filter. Once they establish if it is the blower motor, they can clean it, fix a bad capacitor, or replace the motor entirely.

Q: What is the difference between a fan motor and a blower motor?

A: A fan moves large amounts of gas with a low increase in pressure: you'll find these in your home. A blower is a machine used for moving gas with a moderate increase of pressure: a more powerful fan, if you will. By changing the angle of the blades, a blower will be able to push air in any direction you want it.

Q: Is a compressor a blower motor?

A: The main difference between compressors and blowers is the pressure ratio. Compressors operate at a high-pressure ratio, and blowers at a low-pressure ratio. Air compressors cram air into a small space which makes the air denser. Air blowers move air/gas with a moderate increase of pressure.

Q: Does furnace and AC use same blower?

A: Yes, the furnace and AC use the same blower. The blower is located in the base of the furnace and pushes hot air out of the furnace and into the ducts. It also pushes cool air through the home when the air conditioning is on.

Q: How often do you need to clean a blower motor?

A: Most blower wheels need to be pulled and cleaned every 3-5 years, depending on usage and the home. A dirty blower wheel can negatively affect the airflow in your HVAC unit, causing your heat exchanger to overheat and AC coils to freeze. It will also reduce the efficiency of your blower motor and your entire system.

Q: Does blower motor need oil?

A: Most motors are permanently lubricated and sealed by the manufacturer and, therefore, require no further attention. Some motors, however, have covered oil ports above the bearings near the motor shaft. If the motor has oil ports, it should be lubricated annually.

Q: How long do blower motors last?

A: Blower motors are designed to last just as long as your furnace itself, anywhere from 10 to 20 years. Just as with any HVAC system, the better maintained and serviced your equipment is by experienced HVAC technicians the longer it will last and the fewer repairs you'll face.

Q: Do blower motors get weak?

A: This is usually the first indication that you may have a faulty blower motor. If the airflow coming out of the vents is weak, check the motor. It can mean that your furnace blower motor is having a hard time pushing enough air through the ducts to achieve your desired temperature.

Q: What are the different types of blower motors?

A: A blower motor is the component within a home's HVAC system. The motor blows heated air through vents when the heating system is in use. Conversely, some blower motors blow cold air when the air conditioning system is in use. There are two main types of blower motors: single-speed motors and variable-speed motors.

Q: What is the blower motor on a heater?

A: The HVAC blower motor is the heating and cooling systems component that sends conditioned air from the furnace, heat pump, or air conditioner into the home. Once the system heats or cools the air, the blower motor forces it through the duct system and out the vents in rooms throughout the house.

Q: Where is the blower motor for the heater?

A: One of the hardest-working parts of your home's furnace is the blower motor. In a gas forced air furnace, it's located in a box at the base of the furnace next to the air filter, where it draws return air through the filter. When switched on when requested by the thermostat and control board, the blower and motor push air across the burners in the combustion chamber where it gets heated, then the heat is transferred in the heat exchanger and blown out into the home’s ductwork.

Shengzhou City Huahao Motor Manufacturing Co., Ltd. is one of the most professional heater blower motor manufacturers and suppliers in China, specialized in providing the best custom service. We warmly welcome you to wholesale cheap heater blower motor from our factory.

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