It is equipped with a circulating blower to move air through the duct system. Currently, furnace blowers are designed using two types of motors: Permanent Split Capacitor (PSC) and Brushless Permanent Magnet (BPM)1. Blowers account for a majority of gas furnace electricity consumption.

Considering this, how many Motors does a furnace have?

There are two basic types of furnace motors. A direct drive motor is connected directly to the furnace's blower wheel.

Subsequently, question is, how do I know if my furnace motor is bad? Your blower motor can give you some very clear signs of overheating, including:

  1. A “hot” or burning smell from vents in the home. This symptom is often coupled with the furnace shutting off completely.
  2. Loud humming and other unusual noises.
  3. Furnace cycles off and refuses to restart.

Keeping this in view, how much is a motor for a furnace?

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 long should a blower motor last on a furnace?

The moving parts in a furnace are generally limited to the blower fan and motor, while electronic valves and safety switches account for other components that may be affected by wear and tear. All these, however, are replaceable over the normal average 15-year span of a furnace's usual service life.

Related Question Answers

Should I replace my 30 year old furnace?

Regardless of the logic you follow, the 30year mark is at or close to the maximum lifespan you should expect from your furnace. Even though furnaces can last 30 years or beyond, most experts recommend that you start shopping for a new furnace when your existing unit is 15 years old.

How efficient is a 20 year old furnace?

20yearold furnaces have an annual fuel utilization efficiency, or AFUE, of 78% or less, according to the U.S. Department of Energy. AFUE is the basic energy efficiency rating system used in the HVAC industry.

When should you replace your furnace?

According to most manufacturers and heating professionals, as well as This Old House, the average furnace will need to be replaced every 15 to 20 years, as long as the system is properly maintained.

How long will a furnace last?

15 years

What does a new furnace cost?

The national average cost of a standard efficiency natural gas furnace ranges from $2,150 to $5,900 with most homeowners paying around $3,100. The price may vary based on brand, complexity of install, and the efficiency of the new unit. Get free estimates from furnace replacement pros near you.

Can a furnace explode?

Although it is possible for a gas furnace to either catch fire or explode, it's highly unlikely. If there is a danger of this happening, the furnace will usually simply shut off—as it's designed to. If you've got a good furnace and take care of it, you won't have to worry about explosions or fires.

What causes a furnace blower motor to go bad?

Weak Airflow from the Vents

There are a number of possible reasons why this is happening, including dirt and dust buildup, bad capacitor, and an aging motor. If your blower motor is dirty or has a bad capacitor, you can call in an HVAC technician to fix the problem.

Is it safe to run furnace without cover?

Never operate the furnace without the front-panel door properly in place. Doing so may create the risk of CO poisoning. Most forced-air furnaces have a safety switch that prevents furnace operation when the door or panel to the blower compartment is not in place.

Can you upgrade a furnace blower?

When upgrading your furnace, consider adding a variable speed furnace blower motor. It can improve the efficiency of your heating system while making your home more comfortable. Single-speed blower motors function at full power or not at all, switching off and on to regulate your indoor temperatures.

How much is a blower motor for a furnace?

$245 – $610, Installed

The average cost to replace a broken furnace blower motor is around $290 when the part is under warranty and you pay just the labor cost. When the blower motor is not under warranty, the average cost is around $450 which includes parts and labor for a standard furnace blower motor.

How much is a circuit board for a furnace?

Furnace Control or Circuit Board Replacement Costs

Replacing a furnace control board costs $200 to $600 or more depending on brand and age.

How long does it take to replace a furnace motor?

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.

Can a furnace run too hot?

If a furnace can‘t pull enough air through the ductwork to dissipate the heat that's created, it will run too hot. Simple. It's not normal for a furnace to raise the indoor temperature five degrees in less than fifteen minutes.

How do I fix my furnace from overheating?

Furnaces can overheat for a variety of reasons.
  1. Check your vents. Vents can be blocked by furniture and other objects, which restrict air flow and can potentially lead to overheating.
  2. Change your air filter.
  3. Inspect your furnace's evaporator coil.
  4. Check your furnace's blower fan.

Why is my furnace motor overheating?

A blower motor overheats when the furnace is able to turn on but it isn't functioning properly. This means the blower motor is working but it's not distributing any hot air, thus causing it to overheat. The excessive heat that is produced stays within the blower motor itself and can lead to costly damage.

What does it mean when your furnace is humming?

The blower motor – This is the most common source of humming and buzzing noises in a furnace. It may simply be that the motor doesn't have enough lubrication, but it can also mean that a motor failure is imminent. If you notice the hum when the motor is slowing down, that can indicate an amperage problem in the motor.

How much does it cost to replace a blower motor?

The average cost for a blower motor replacement is between $364 and $394. Labor costs are estimated between $86 and $109 while parts are priced between $278 and $285.

Why is my furnace blower so loud?

Loud noises coming from your furnace while it is running could be caused by any of a number of issues. For example, you may have a problem with the fan that blows hot air through your vents. That might be due to the fan bearings being worn out. In that case, these bearings will need to be replaced.