Let’s face it. Our daily lives revolve around electricity.

A sudden power outage is a huge disruption and can even lead to major damage and expense. A backup generator is the ideal solution for peace of mind. The unit is wired into the home’s electrical system, automatically takes over at the first sign of an outage, and provides a continuous flow of power. Running on natural gas, the generator requires no refueling and runs for as long as necessary.

Generator Repairs, Maintenance & Installations

To hear more about the installation of a backup generator in Southern New Hampshire, contact the experts from MASI Plumbing, Heating & A/C at (603) 889-2331. We offer free estimates, flat rate pricing, and match your specific requirements to quality equipment. Installation is completed quickly and properly, and our fully licensed team further provides any necessary maintenance or repairs on all brands and models. Family owned and operated, with 55 years of local service, we offer dependable solutions across Nashua, Milford, Amherst, Hudson, & Merrimack, NH.


Some of the many benefits of adding a residential backup generator include:

  • Automatic and immediate source of power during a blackout
  • Continued operation of appliances, including HVAC system, refrigerator, and water heater
  • Ensures safety and comfort during extreme weather
  • No need to be on premises for start up
  • Operates reliably during man-made and natural disasters
  • Provides power for as long as necessary
  • Safeguards against harmful voltage fluctuations and surges when power is restored
  • Sump pump continues to operate and prevent flooding

Serving Southern New Hampshire

  • Wilton
  • Milford
  • Amherst
  • Mont Vernon
  • Brookline
  • Hollis
  • Nashua
  • Hudson
  • Litchfield
  • Bedford
  • Manchester
  • Derry
  • Londonderry
  • Windham
  • Pelham
  • Salem
  • Merrimack

GeneratorsGenerator Replacement

Generator Service & Generator Installation Nashua, NH, Milford, NH, Merrimack, NH, Hudson, NH & Amherst, NH

Paula L.

Came home to my central a/c not working. After checking a few things, I called Masi Plumbing, based off of consumer reviews here. The person who answered the phone was accommodating to my needs and had a service person here super promptly! The service person was very friendly, highly informative and fixed the issue promptly- and not at a high cost either! Will def be calling them for our needs again, and referring them as well. Thanks a million Masi Plumbing!

Susan C.

My pipes froze and burst on a Sunday evening. I called several plumbers who would not give me the time of day. MASI Plumbing to the rescue! They sent a plumber (Nick) out immediately who was able to repair the broken pipes that evening, even though though he had already worked all day! A huge thank you! I highly recommend MASI Plumbing and will be using them exclusively in the future.

Christine C.

Bought a new boiler system from them this year and they gave us the most comprehensive quote for the right work (pointed out the need for fresh air and a new oil line which we knew were needed) at a good price. Unfortunately one of our parts in the system failed, but they had it replaced and our system up and running within 2 hours, and covered under warranty, so no cost to us. They have always been very friendly, down to earth, but professional. Great to work with!