# How Many Amps Does A Furnace Use

## Can a furnace be on a 15 amp breaker?

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## How many amps does an electric furnace draw?

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. By multiplying the volts by amps you will receive total wattage.

## How many amps does a furnace blower pull?

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

## Does a furnace need a dedicated circuit?

According to building codes, a furnace must be supplied by a dedicated circuit, meaning the circuit cannot supply power to anything other than the furnace. This circuit is served by its own circuit breaker in the breaker box (properly called the main service panel).

## How much power does an electric furnace need?

Generally, electric furnaces use 10,000 to 50,000 watts (W) of electricity, depending on the model. On average, it’s safe to assume that electric furnaces in standard residential homes use about 20,000 W. Most electric furnaces use between 60 and 80 amps, and connect to a 220 volt breaker.

## Are the furnace and AC on the same breaker?

For example, if you have a furnace with an AC unit, your breaker is likely set up to both units on the same circuit. However, some homes have separate systems for each heating and cooling system. This means that their air conditioner can be powered off without affecting the furnace’s performance.

## Does running the fan on my furnace use a lot of electricity?

Higher Energy Costs A standard furnace fan motor uses about 400 watts of electricity every hour. Assuming a national average of 12 cents per kilowatt-hour, let’s see how much that would cost you in the long run. If you run your furnace fan twenty-four hours a day, it will cost you a little more than \$1.15 every day.

## What should amp draw be for a blower motor?

Read the amp draw of the blower motor. Check the amp draw against the manufacturer’s fan performance data to verify the airflow that the fan is producing. A rule of thumb is that on high speed most motors will draw 70-100% of the FLA if it is moving the required 400 CFM per ton on residential systems.

## How much power does HVAC fan use?

A typical AC fan motor uses about 500 watts when it’s running. Therefore, if you run the fan continuously for a 30-day month (720 hours), you would use 360,000 watt hours (720 x 500) or 360 kilowatt hours (kWh). Therefore, the fan uses about 360 kWh per month in the ON mode.

## Does furnace require GFCI?

If the furnace is not cord and plug connected and is direct-wired, then no GFCI protection is required, no matter where it is located. Yes, a GFCI is required.