What causes high amperage in blower motor?

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 many amps should a furnace blower motor draw?

Up to 20 Amps or more. Amperage is how much power a device is consuming.

How many amps does a gas furnace blower use?

Most gas heat furnaces use less than 600 watts of electricity, or less than half of a typical 15 amp electric circuit.

How do I know if my furnace blower motor is bad?

What Are Signs Your Blower Motor Needs to Be Replaced?

1. Poor or Airflow from Air Vents. This will be the first and most obvious sign your blower motor has a problem.
2. No Airflow At All From Vents.
3. Skyrocketing Energy Bills.
4. Strange Noises When You Turn on the Heat.
5. Overheating Blower / Weird Smells.

How long should a blower motor last on a furnace?

10-20-year
Even though the manufacturer states their blower motor will last two decades, we advise all clients to expect a 10-20-year life span due to age, use, and proactive maintenance.

What is the rated amperage of a fan motor?

01 to 20 amps or more. Amperage is a measure of power being consumed by electrical device. Furnace blower motors and condensing fan motors will have the Amps labeled on a name tag on the motor. It can be simply labeled Amp or in some cases FLA (Full Load Amps) which is the max the motor is rated to run at.

How many amps does a 20 KW furnace use?

20 kw Heat Strip drawing 30 amps for each 5kw.

How many amps does a home furnace need?

The exact amps an electric furnace requires is solely based on the size of the furnace and its performance capabilities; however, typically electric furnaces require a draw between 60 and 80 amps.

How do you diagnose a bad blower motor?

Bad Blower Motor Symptoms in HVAC

1. Airflow is weak from the vents. This is often one of the first signs or symptoms of a bad blower motor.
2. Sounds Coming From the Blower.
3. Overheating is One of the Symptoms of a Bad Blower Motor in HVAC.

What happens when blower motor goes bad?

You might also hear ongoing whirring noises, or noises that change or get louder if you increase the fan speed. These are all signs of problems with the blower motor. In some cases, you may even notice smoke or smells of burning while driving, in which case you should pull over immediately.