Can I Plug My Furnace into a Generator?

A furnace is a heating system used to generate warmth in buildings or homes. It typically operates by burning fuel (such as natural gas or oil) or using electricity to produce heat, which is then distributed throughout the building to maintain a comfortable temperature.

Can I plug my furnace into a generator? Yes, you can plug your furnace into a generator, provided the generator has the necessary wattage capacity and safety measures are followed.

See Also: How to Fix a Surging Generator?

Can I plug my furnace into a generator? – Guide

Let’s explore the possibilities, safety measures, and factors to consider when using a generator to power your gas furnace during a blackout.

Step 1: Running Your Gas Furnace with a Generator

A gas furnace is a crucial component of many homes, providing warmth during the cold months. While it may seem challenging to run a gas furnace during a power outage, it is indeed possible. The key to making this work is a portable generator with sufficient wattage.

1. Understanding the Basics

The average home gas furnace typically ranges between 30,000 and 60,000 BTUs, with most homes using a 40,000 BTU furnace. To run a gas furnace on a generator, it’s essential to match the generator’s wattage capacity with your furnace’s requirements.

2. Wattage Requirements

The wattage required to run your gas furnace depends on its size and fan power. For example, a gas furnace with a quarter-horsepower fan needs between 1,000 and 1,600 watts to start and 600 watts to keep running.

A gas furnace with a half-horsepower fan may need over 2,000 watts to start and approximately 900 watts to maintain operation.

Step 2: Choosing the Right Generator

Selecting the right generator is a critical step in ensuring your gas furnace continues to run during a power outage. Here are some factors to consider when choosing a generator:

1. Generator Size

The size of your generator is the most important factor to consider. The average home furnace is around 50,000 BTUs, but sizes can range from 25,000 to over 100,000 BTUs. It’s crucial to determine the BTU output of your furnace and select a generator that can match or exceed this output.

2. Fuel Type

Consider the type of fuel your furnace uses. Most gas furnaces operate on natural gas, but some use oil or propane. Ensure that the generator you choose is compatible with the fuel source your furnace requires.

3. Climate

The climate in which you live plays a significant role in selecting the right generator. If you reside in an area with extremely cold winters, your furnace may need to work harder, requiring a larger generator.

4. Wattage Capacity

Choose a generator with the appropriate wattage capacity. For instance, a 5,500-watt generator can typically run a gas furnace up to 60,000 BTUs. Make sure the generator’s wattage capacity matches or exceeds your furnace’s requirements.

Step 3: Connecting Your Generator to the Gas Furnace

Once you’ve chosen the right generator, it’s time to connect it to your gas furnace. This process requires some technical knowledge, so it’s essential to follow safety precautions and, if needed, seek professional assistance.

1. Preparing the Generator

Turn off the generator’s main circuit breaker.
Remove the generator’s grounding rod from the ground.

2. Preparing the Furnace

Ensure that the gas furnace is prepared to be connected to the generator:

3. Connect the Generator

Connect the generator’s output terminal to the gas furnace’s input terminal.

4. Safety Measures

Make sure the generator is properly grounded to prevent electrical shocks.
Use a gas line connection that is secure to prevent gas leaks.
Start the generator and allow it to run for a few minutes to ensure everything is working correctly.

5. Testing the Connection

To verify that the connection is working as intended, start the gas furnace and check if it operates correctly.

Step 4: Safety Considerations

Running a gas furnace with a generator is a practical solution during a power outage, but safety should always be a top priority. Here are some critical safety considerations:

1. Generator Placement

Generators should be placed outside when running. They can release deadly chemicals and gases that are unsafe for humans, even when a room is well-ventilated with open windows and doors. Using a carbon monoxide detector is advisable to ensure that no toxic fumes enter your home.

2. Fuel Storage

For generators that use gas, like your furnace, it’s essential to store extra fuel away from the generator to prevent fire hazards. Battery-powered generators should be kept fully charged in a safe location for immediate use when needed.

3. Extension Cords

When connecting your gas furnace to the generator, use outdoor-safe cords capable of handling the required wattage. If you need to plug in additional appliances alongside your furnace, ensure that the extension cords are safe for multiple connections.

4. Multiple Generators

If you have numerous appliances that require power during an outage, consider using two generators – one for your appliances and one for your gas furnace. This approach prevents overloading a single generator, enhancing safety.

Step 5: Best Generator Options

Choosing the right generator is crucial to ensure your gas furnace operates seamlessly during a power outage. Here are some generator options based on various needs:

1. Small and Portable Generator

Generac 7676 GP8000E Portable Generator: This medium-sized generator comes in various sizes, ranging from 3,600 watts to 8,000 watts. It is easy to transport with wheels and is a practical option for those who require moderate power during outages.

2. High Power and Portable Generator

WEN 56475 Portable Generator: Available in 4,750 watts and 6,000-watt options, this generator is equipped with a wheel kit for easy transport. The four-gallon fuel tank provides up to ten hours of power.

3. Battery-Powered Generator

EGO Power+ PST3042 Nexus Portable Power Station: This highly-rated battery-powered generator can produce up to 3,000 watts using two included batteries. It can be recharged fully in less than two hours when not in use.

4. Budget-Friendly Generator

Westinghouse Outdoor Power Generator: This portable, gas-powered generator comes in two different sizes and features a four-gallon fuel tank capable of running for over thirteen hours. It also includes additional safety features.

Conclusion

In times of power outages, the thought of keeping your home warm with a gas furnace is reassuring. Running your gas furnace with a generator is not only possible but practical, provided you follow safety guidelines and choose the right generator for your needs.

With the right equipment, safety precautions, and professional assistance if necessary, you can ensure that your gas furnace operates seamlessly when the power goes out, keeping your home warm and comfortable during challenging times.