Generac home standby generator powering a home in the dark

Massachusetts Backup Power Experts

When an outage strikes in Massachusetts, Generac home standby generators automatically restore power to your whole home within seconds. Trust Cotti Johnson HVAC Inc for your local expert installation and dependable support.

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Get a free estimate from Cotti Johnson HVAC Inc and discover how effortless power outage protection can be.

Confidence that lasts beyond seasons.

By completing this form and clicking “Submit” below, I am providing my consent to permit Generac and its authorized dealer to contact me about this request. I also am providing my consent to Generac to contact me about Generac products and services for marketing purposes including via telephone, email, AI generative voices, prerecorded and/or artificial voice messages, and using automated technology, including ATDS. Normal message and data rates apply. I can opt out of covered communications from Generac at any time.

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The Time for a Whole Home Generator is Now.

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Protect Your Home From the Next Outage

Your home is your sanctuary. Keep it running with the backup power you need- where you need it, when you need it.

woman peering into bright fridge

Food safety first

Power loss can spoil groceries fast. Ensure your essentials stay fresh and ready.

Comfort without compromise

Extreme heat or freezing cold can hit without warning. Stay in control of your comfort.

Life uninterrupted

From urgent calls to family safety, do not let an unexpected outage cut you off.

Automatically power through outages with confidence.

Generac home standby generators turn on automatically within seconds of an outage, protecting your home without lifting a finger.

  • Automatically restores power
    Power returns in seconds, even if you are not home.

  • No refueling needed
    Eliminates the stress of finding fuel in an emergency.

  • 24/7 remote monitoring
    Check generator status anytime, anywhere, from your connected devices.

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★★★★★

Trusted by Massachusetts locals to install home standby generators.

"We had no power for 8 days... I lost everything in my refrigerator and freezer... so we said never again. As you get older, you need that peace of mind and we just love our Generac."

Linda C., East Long Meadow, MA

Backup power you can count on. Day or night, rain or shine.

Wherever your home lands on a map, be ready with dependable backup power you and your family deserve.

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log home with lights on surrounded in snow on a starry night

Weather the storm

Keep your home powered, even when conditions outside take a turn for the worse.

Sense of security

Ensure access to the essentials that make your house feel like home.

Power that lasts

Do not let extended outages get in the way of your everyday life.

Homeowners who plan ahead feel more secure when outages strike. You can too.

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Frequently Asked Questions

What size generator do I need for my home?

There are many factors that impact generator sizing and power needs for your home, including how often you expect to have a home power outage. Cotti Johnson HVAC Inc can best determine which home standby generator will be best for your home, and you can request a free quote, which includes sizing options and price.

Do generators have to be maintained?
  • All generators require periodic maintenance, such as oil and filter changes, to ensure maximum performance and reliable service.
  • Scheduled maintenance kits are available and many authorized dealers offer annual maintenance contracts.
  • We recommend servicing every 6 months by an authorized independent service dealer.
  • You can find a digital copy of your owner's manual here
Where can a generator be placed or installed?

The generator is installed outside your home, typically close to your fuel source (propane tank or natural gas meter). Your dealer also performs a site survey to determine the best location.

Always follow the Site Selection and Preparation guidelines from the installation manual.