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STANDBY GENERATORS

COMFORT. SECURITY. CONVENIENCE.
Explore Home Standby Generators

About Generator Supercenter of New Hampshire

About Our Generator Company
Generator Supercenter of New Hampshire is the company for all your generator needs. We provide high-quality models, have factory-certified technicians for repairs and maintenance, and offer turnkey installations.

We are the number #1 Generac dealer in North America. Our employees have extensive training to provide a professional experience every step of the way.

When bad weather hits or an electrical circuit malfunctions, you may lose power in one room or the entire building. When that happens, you can recover quickly if you own a reliable home backup generator.

Once your generator is installed, you’ll need reliable technicians available 24/7 and capable of providing quick services. Generator Supercenter of New Hampshire provides experienced technicians for generator installation, repair, and maintenance. 

Whether you need a new generator, or your current one is malfunctioning, we won’t leave until your generator is up and running as it should be.

As a father and son-owned business, we’re committed to the best service. When you call us, our estimates are free, so you can meet with a member of our team to learn about your options with no strings attached!

Our Mission Statement
Our mission is …. To joyfully provide comfort and peace-of-mind for our customers. To be an outstanding partner to our suppliers. To change the lives of our team members by giving direction, respect and the opportunity for financial growth.
About Generator Supercenter of New Hampshire
Phone 603-731-4003
msanford@generatorsupercenter.com

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How It Works HSB

Generator Installation

WHAT'S INVOLVED IN INSTALLING A HOME BACKUP GENERATOR?

Installing a home backup generator is an exciting time. Generator Supercenter of New Hampshire will prepare the installation site outside your home, place the generator, run the natural gas or LP fuel line, install the transfer switch, and make all of the necessary electrical connections. And we will make sure that your backup generator runs properly, and is ready for its first power outage.

Generator Repair & Warranty

You invested in a Generac automatic home backup generator, and now you're never without power. But just like a car, air-cooled backup generators need to be properly maintained to perform as intended. We recommend you have your unit serviced every 6 months. Our factory-trained technicians are available to handle all your Generac servicing needs.

If you are looking for the Owner's Manual for your generator (or any other Generac equipment), please use the online product support on the Generac.com website. You can use your model number or serial number to find your manual by using the form located here:

For questions about the warranty of your Generac generator (or other Generac equipment), please contact Generac directly at 888-GENERAC (888-436-3722)

To ensure accurate warranty coverage, please make sure your Generac equipment is registered at

An added benefit of registering is proof-of-purchase in the event of an insurance loss such as fire, flood or theft.