Never Fear Another Power Outage Again

Having an efficient home power backup solution ensures you’ll stay prepared for when disaster strikes while enjoying the safety and comforts of a powered home all year round.

Unlike old-fashioned standby generators that are large, expensive, yet only serve one purpose, Gerner Energy provided DuroMax generators will power you whether you’re at home, on an RV trip, or at the job-site.

DuroMax Portable generators can be powered by 2-3 types of fuel. If you have an existing propane tank, the generator can be integrated into your existing propane tank and line system. We also sell and install above & below ground propane tanks if needed.

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Home Power Backup provides the full security and flexibility of being able to keep the lights and power on at your home in the event of a power outage.

Duromax Portable Generator Dealer & Installer

Gerner Energy is an Authorized DuroMax Installer

Home Power Backup provides the full security and flexibility of being able to keep the lights and power on at your home in the event of a power outage.

Gerner Energy is an Authorized DuroMax Installer

No need to pick and choose what gets power during a black out. Nearly Power Your Entire House

DuroMax Versus Whole Home Generator Comparison Chart

Well Water Pump

Central AC & Furnace

Television & Media

Refrigerator & Appliances

Internet & Computers


More Power, Less Load Management

DuroMax generators are designed to provide home power backup. They offer some of the largest power producing models on the market, with the ability to power your entire home with a single cord. These models range from 10,000 to 15,000 watts and feature both 240-volt capability and a 50-amp connection. This means that you can power not only your fridge, microwave, and lights, but also large appliances such as central air conditioners, gas water heaters, and gas furnaces.

Depending on the time of year, you may need to run different appliances. For example, in the winter, you may need to run your electric furnace. In the summer, you may need to run your central air conditioner. The DuroMax can handle these loads as well, with the right load management.

Connecting is Easy

Connecting a DuroMax Portable Generator is as simple as a quick connector to your propane tank and another one to your home's power. Our team handles the entire installation and will train your family on how to use it.

Here are some tips for using a DuroMax generator for home power backup:

With proper care and use, a DuroMax generator can provide peace of mind during a power outage.

How Does it Work?

We work with homeowners and small business owners to determine their power needs. 

After an electrical site survey and power assessment, we will install a transfer switch that will allow your DuroMax power backup generator to connect directly to your home’s electric panel. 

With a connection to your home’s propane tank, a simple flip of the switch allows your home or business to be near fully powered by a portable generator.

How Does it Connect to Your House?

Once you have a DuroMax large wattage generator, you can connect it to your home using a transfer switch or an interlock kit. 

Either option will allow you to easily make the connection of your portable generator to your home’s electric panel. 

DuroMax Home Connection
DuroMax Interlock Graphic

An interlock kit are pieces that provide the function of using your homes existing power panel


The panel cannot back feed the generator and isolates your generators power to your home.


A power cord will supply the power from your generator into your panel box for distribution into your home.

Duromax Transfer Switch

Transfer Switch

A transfer switch is a device that allows you to safely connect your generator to your home's electrical panel. It prevents you from backfeeding power into the power lines which can be dangerous.

DuroMax Interlock Kit

Interlock Kit

An interlock kit is a manual device that allows you to safely connect your generator to your home's electrical panel. It prevents you from backfeeding power into the power lines which can be dangerous.

Which option is right for you? The best option for you will depend on your budget and your needs. During our free site survey we will work with you to determine which option is right for you and what circuits your generator will power.

No matter which option you choose, it is important to have your generator installed by a qualified electrician. This will ensure that it is installed safely and correctly.

Again, It’s very important to:

How Much Should I Budget?

A whole home generators that power a typical home in the Baltimore county area start at $10K, while a DuroMax generator with Gerner Energy services generally start at $3K. That would include a basic generator and professional connection to your home’s electrical panel.

During a Free Site Survey, our knowledgeable team will perform a load & needs analysis to determine which generator and connections are right for you and your family. Based upon this information, along with your fuel source options, we will be able to provide you with a free quote for a complete portable generator system.

Here are some factors to consider when choosing a generator:

Choosing the Right Generator for Your Home

Are you Ready to Learn More?

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Rose B.
Rose B.
via Google Reviews
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I feel totally blessed that I found Gerner Energy! Not only did they come when they said they would, I am now on their repeat fill up program, I don't have to worry about running out of oil and placing a refill call.
Adam C.
Adam C.
via Google Reviews
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Gerner energy has competitive prices, great customer service and they do a great job supporting the local community. I highly recommend Kip and his crew. Top notch service!
Patricia B
Patricia B
via Google Reviews
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The customer service is phenomenal. I have never had to go through the dreaded recordings of push this button to do this or that. An actual person answers the phone and many times it is the owner. I switched to Gerner because the prior provider was charging almost $1 more a gallon and have been delightfully pleased with everything about them. Once, there was an issue with my boiler and someone was dispatched in a timely manner. I switched and have never looked back after more than 2 years. Superior service, fair pricing and a community-owned company, who could ask for more?