Generator Installation in Edgartown
Authorized Generac Dealer Serving All of Martha’s Vineyard
When the grid goes down on the Island, waiting for a mainland crew to board the ferry isn’t an option. Brennan & Co. is based in Edgartown and serves all six towns of Martha’s Vineyard as an authorized Generac dealer. We handle the full scope of residential generator installation, from initial sizing through permitting, fuel coordination, and final commissioning, without leaving the Island to do it.
We work with homeowners across Martha’s Vineyard, whether you live here year-round or own a seasonal property that needs reliable protection when you’re away.
Ready to add standby power to your home? Call us at (508) 905-4909 for a free estimate, with same-day appointments available whenever possible.
Why Martha’s Vineyard Homeowners Choose Brennan & Co.
We’ve been serving the Island since 2003, and readers of Martha’s Vineyard Magazine have voted us Best HVAC Company year after year since 2019. Our technicians are fully trained and stay current on the latest advancements in generator technology and installation standards. We’re fully insured and back our work with reliable warranties.
Many of our clients value their privacy. We keep our customer base confidential, don’t take photographs on job sites, and bring that same discretion to every installation, whether it’s a quiet year-round home or a high-profile estate.
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“The team at Brennan took up the challenge of a complex heat pump 4-zone Wi-Fi interface project and hit it out of the park. Great people, excellent follow-through.”- Coleman H.
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“They arrived exactly when they said they would, worked efficiently, and delivered high-quality results. I was extremely pleased with their professionalism and the care they took throughout the entire process.”- John M.
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“The quality of the work and the speed of service were truly impressive. I was very pleased with the entire experience and would highly recommend their team.”- Thiago M.
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“I called Brennan's emergency line late on Friday night because my air conditioning was not working. By Saturday morning, the technician came and had it fixed. What great and reliable service!”- Clif F.
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“Great HVAC Company on Martha’s Vineyard. Great service and superior installation. I would highly recommend them for all your HVAC needs.”- Christopher J.
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“They were easy to work with, and the price was competitive with the Island market. What's priceless is that they came when they said they would during installation, and when I've needed service, they arrived on the same day I called, that's an unheard of l”- Rich S.
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“The team at Brennan took up the challenge of a complex heat pump 4-zone Wi-Fi interface project and hit it out of the park. Great people, excellent follow-through.”- Coleman H.
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Experience the Brennan Difference Quality Service Delivered with Care
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Local Service You Can Count On Proudly Serving Homes Across the Island
A Higher Standard of Home Services
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Experience That Keeps You Comfortable Year-RoundWith deep industry knowledge and a commitment to doing things right, we ensure your system performs at its best when you need it most.
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Comfort Without Compromise or DisruptionWe work efficiently & respectfully, providing high-quality service with minimal interruption to your home & routine.
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Professionalism You Can Feel at Every StepFrom first call to final walkthrough, our team delivers clear communication, dependable scheduling, and workmanship you can trust.
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Expert Solutions Built for Coastal LivingWe design and service HVAC systems specifically for the unique demands of the island's homes
How We Install a Standby Generator
A standby generator is permanently installed outside the home and wired directly to the electrical panel. When an outage occurs, it starts automatically within seconds, with no manual intervention required. Here’s how we take a property from assessment to backup power:
Site Evaluation & Sizing
We assess your home’s power needs, layout, and placement options to recommend the right Generac unit for your situation. Whether you want essential-circuit coverage or whole-home capacity, we size the system to match your actual usage.
Permitting & Fuel Coordination
We manage the Island-specific permitting process and coordinate propane or natural gas supply connections, including working with your fuel provider on tank sizing and placement requirements.
Electrical Integration
Our licensed technicians integrate the generator with your electrical panel and install the automatic transfer switch that triggers the system when grid power fails.
Testing & Walkthrough
We test the completed system thoroughly before we leave and can walk you through how to monitor and manage it, so you’re familiar with its operation when you need it.
Why Standby Power Matters on Martha’s Vineyard
Martha’s Vineyard receives its electricity from the mainland through undersea cables, a configuration that can leave the Island more vulnerable to extended outages during storms or cable faults. Nor’easters, hurricanes, and summer demand peaks all put pressure on the grid, and when power goes out here, restoration timelines are often lengthy.
A professionally installed standby generator can keep your lights, appliances, heating and cooling equipment, and security systems running automatically when the grid fails. For seasonal and absentee owners, that automatic response matters most: the generator activates and helps protect the property whether you’re on-Island or not.
Schedule Your Free Generator Installation Estimate
We offer free estimates on all generator installations across Martha’s Vineyard. Same-day appointments are available whenever possible, and our team is reachable 24/7 for emergency assistance.
Call Brennan & Co. at (508) 905-4909 to schedule your estimate. We’re based on the Island and ready to help.