High-Efficiency Heating & Cooling Solutions for Island Homes

Your Trusted HVAC Experts on Martha’s Vineyard

At Brennan & Co., we specialize in providing high-end, energy-efficient HVAC services to homeowners and businesses across Martha’s Vineyard. Based in Edgartown and proudly voted Best HVAC Company by Martha’s Vineyard Magazine readers every year since 2019, we’re the Island’s trusted source for professional heating and cooling installation, repair, and maintenance.

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(508) 696-0043

Martha’s Vineyard HVAC Experts

Whether you’re upgrading a historic home in Vineyard Haven or maintaining a seasonal estate in Chilmark, our expert technicians deliver precision workmanship, advanced technology, and discreet, reliable service tailored to the needs of sophisticated properties.

Serving All Six Towns of Martha’s Vineyard

Our experienced HVAC contractors serve clients across the Island, including: Edgartown, Vineyard Haven (Tisbury), Oak Bluffs, West Tisbury, Chilmark, Aquinnah

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Locally Based. Island Focused. Comfort Driven.

From quiet coastal cottages to multi-zone luxury homes, we understand the challenges of Island living—and design HVAC systems that perform beautifully, season after season. Our services are grounded in technical expertise, thoughtful system design, and a deep respect for your home and time.

Explore Our Services

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Featured HVAC Services

Air Conditioning

Keep your home cool and comfortable with high-efficiency AC systems and expert repairs.

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Furnaces

Reliable heating solutions designed for island winters, tailored to your home’s needs.

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Heat Pumps

Energy-saving, year-round comfort for modern and traditional properties alike.

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Mini-Split Systems

Perfect for renovations, additions, and zoned comfort—no ductwork needed.

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HVAC Maintenance

Protect your system and extend its life with seasonal tune-ups and custom maintenance plans.

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Why Homeowners Choose Brennan & Co.

Award-Winning Reputation

Voted Best HVAC Company on Martha’s Vineyard since 2019.

Island Knowledge

We understand the effects of salt air, humidity, and off-season occupancy on HVAC systems.

Discreet, Professional Service

We show up on time, respect your home, and work cleanly and efficiently.

Premium Equipment

We install top-tier systems from trusted manufacturers, optimized for comfort and savings.

a rocky beach next to the ocean under a blue sky

Serving All Six Towns of Martha’s Vineyard

Martha’s Vineyard

Our experienced HVAC contractors serve clients across the Island, including:

Edgartown

Vineyard Haven (Tisbury)

Oak Bluffs

West Tisbury

Chilmark

Aquinnah

Service Areas

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Hear From Our Satisfied Clients

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Start With a Free Estimate Today

Whether you’re building, renovating, or simply want a more reliable HVAC system, Brennan & Co. is ready to help. Discover why Island homeowners trust us for comfort, quality, and service that stands out.