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.

What are the symptoms of a bad blower motor?

Here are just a few of the signs that your blower motor is going bad.

• Weak airflow. This is one of the first signs of a bad blower motor that people tend to notice.
• Noises. Have you noticed any unusual noises coming from your vehicle’s HVAC system?
• Smoke or smells.

What is the purpose of a blower on a motor?

A blower is an air compressor that increases the density or pressure of air supplied to a combustion engine. This provides each intake cycle of the engine with more oxygen, allowing it to burn more fuel and do more work, therefore increasing power.

What happens if the blower motor goes out?

No air from the vents If the heater blower motor burns out or short circuits, it will not function, and therefore will not be able to produce any airflow for the system. The blower motor will usually have to be replaced in order to restore proper operation to the system.

Can you drive a car without a blower motor?

Your car’s blower motor is not only necessary for the operation of your air conditioner. Without a functioning blower motor your engine runs the risk of overheating. Start car and see if blower motor works.

How do you tell if it’s the blower motor or resistor is bad?

Problems with a blower motor resistor are common in many cars. The most common symptom of a failed blower motor resistor is when the heater fan only runs at the highest speed setting (4 or 5) and doesn’t work at low speeds. In some cars, a failed blower motor resistor can cause a heater fan to stop working completely.

How do I know if my blower motor resistor is bad or blower motor?

Symptoms of a bad heater blower motor resistor

1. Fan does not work at all, so no air comes out of the vents.
2. Fan only works on some speeds and not others.
3. Fan only works on the highest speed.
4. Fan runs all the time and can’t be controlled with the fan switch.
5. You see smoke coming out of the vents.

Does a blower add horsepower?

Blowers make horsepower and lots more torque than a standard engine. The amount of extra horsepower really depends on what your engine is like. On a 350 Chev, Weiand estimates an extra 100-120hp with one of its low-blow superchargers on an otherwise stock motor. The biggest gains will really be in torque.

What does a blower do?

The blower is one of the most appropriately named components in your furnace: its sole job is to blow hot air through the ducts and into your home. An important distinction to be made is that there is bother a blower motor and a blower fan.

How does a blower motor work?

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.

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.

What can cause a blower motor to stop working?

In a situation where the motor doesn’t work on any speed, the most likely causes are: a blown power supply fuse, a bad motor ground connection, bad motor speed control module or a failed motor. On all systems, a failed blower motor is least likely.

How much does it cost to replace a 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 to replace a car AC blower?

Blower Motor Replacement Cost – RepairPal Estimate. Labor costs are estimated between $68 and $86 while parts are priced between $238 and $241. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.

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.