Keep your home running when the power goes out.
Serving the Merrimack Valley and nearby Massachusetts and Southern New Hampshire communities, generally within about 20 miles of Dracut.
Automatic backup power for your heat, refrigerator, lights and other priorities. Get clear options and a written estimate for a system sized to your home.
Backup power. Clear options.
Family owned
since 1979
900+
Google reviews
Written estimates
Clear project scope
Local service
MA & Southern NH
Backup power for what matters most
Automatic backup
A standby system detects an outage and switches to generator power automatically.
Everyday essentials
Plan backup for heating, refrigeration, lighting and the equipment your family relies on.
Storm preparation
Include a compatible sump pump in your backup plan to help keep it operating during outages.
A system that fits
Choose the circuits and equipment to support, with sizing based on your home’s electrical needs.
What your generator installation includes
Generator sizing
We assess your electrical needs and discuss the equipment you want to keep running.
Permits & inspections
We handle electrical permits and coordinate required inspections for our work.
Installation planning
Review equipment location, fuel supply arrangements and any required utility coordination.
Automatic transfer switch
The transfer switch safely manages the change between utility and generator power.
Testing & walkthrough
We test the completed system and explain operation and recommended maintenance.
Care for your property
We plan access, protect the work area and clean up when the installation is complete.
Generator projects by our team
Real installation and replacement work shared on Sylvester Electric’s Google Business Profile.
Real customer experiences
4.7 out of 5 on Google · 957 reviews. Checked October 22, 2026.
★★★★★
“Your man John came by on time and helped me with the hook up of my new Generator. He was very helpful, led me on a step by step basis of what to do and my wife and I were very pleased.”
Jerry Bisantz
Google review · August 9, 2026 · Generator hookup
★★★★★
“Kyle Berube did a great job, including clean up.”
David Ritter
Google review · October 21, 2026 · Electrical service
Let’s plan backup power for your home.
Tell us what you want to keep running. We’ll discuss your home, the installation requirements and the next step toward a written estimate.
Trusted by homeowners in our community
900+ Google reviews
Generator installations at real homes
Real Projects. Real Homes. Real Electrical Upgrades.
Generator questions, answered
Do I need to supply the Generator?
No. We can supply and install the generator, or install a generator you’ve already purchased. We’ll confirm compatibility, sizing, and manufacturer requirements before installation.
How do I know what size generator I need?
We perform a full electrical load assessment to determine the correct generator size based on your home’s electrical demand and critical circuits.
Do I need permits for a whole-home generator?
Yes, permits are typically required. We handle all electrical permits and coordinate required inspections with the local authority having jurisdiction.
How long does a whole-home generator installation take?
Timing depends on the generator, site preparation, fuel supply work, equipment availability, permits and inspections. Your written estimate and installation plan explain the expected schedule for your home.
Will my generator turn on automatically during an outage?
Yes. Whole-home generators are installed with an automatic transfer switch (ATS) that detects power loss and restores backup power automatically.
Can generators run on natural gas or propane?
Yes. Whole-home generators can run on natural gas or propane, depending on your home’s available fuel source.
Do you service and maintain generators?
Yes. We offer generator maintenance, testing, and service plans to ensure reliable operation year-round.
What areas do you serve?
Our Dracut-based team serves the Merrimack Valley and nearby Massachusetts and Southern New Hampshire communities, generally within about 20 miles of Dracut. Contact us to confirm service at your address.