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Home Heating Maintenance and Installation You Can Rely On

Crosby Mountain Services is a mechanical contractor specializing in oil and propane heating system maintenance, repair, and installation throughout New Hampshire’s Lakes Region and White Mountains. We provide boiler repair, furnace repair, oil burner service, propane service, gas installation, heating equipment installation, oil tank and propane tank installation, and more.

Visit our Services page for a glimpse at some projects, both before and after!

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Our Services – Home Heating Maintenance and Installation

From oil and propane heating maintenance and repairs to boilers, furnaces, tanks, burners, and installations, Crosby Mountain Services keeps New Hampshire homes and businesses running right.

Explore our services to learn more.

Oil Tank Replacement

Propane Tanks

Annual Cleanings

Oil to Propane Conversions

Propane Piping

System Diagnosis and Repairs

Installations

Free Consultation within Our Service Area

Commercial and Residential Solutions

Our Focus Areas

Propane Vaporizer System

We specialize in oil and propane heating maintenance, repair, and installation for residential and light commercial customers throughout New Hampshire’s Lakes Region and White Mountains. Our work includes boilers, furnaces, burners, oil tanks, propane tanks, gas installations, and heating equipment, from routine maintenance and repairs to complete system installations and upgrades.

We focus on safe, reliable solutions built to handle tough New England winters—keeping your heating system running efficiently and your property protected year-round.

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Oil Services

Crosby Mountain Services provides oil heating system maintenance, repair, and installation for residential and light commercial properties throughout New Hampshire’s Lakes Region and White Mountains. We service and install oil boilers, oil furnaces, oil burners, and complete oil heating systems, from routine maintenance and troubleshooting to equipment replacement and new installations.

We also specialize in oil tank installation and replacement, including single-wall and double-wall oil tanks for indoor and outdoor applications. Every tank installation is completed with proper connections, secure placement, and attention to applicable safety requirements.

Steel 275g Oil Tank
Double Wall 265g Oil Tank

Propane & Gas Services

Propane systems need proper installation and regular maintenance to operate safely and reliably. Crosby Mountain Services provides propane heating and gas services for residential and light commercial properties throughout New Hampshire’s Lakes Region and White Mountains.

We service and install propane boilers, furnaces, direct-vent heaters, propane tanks, regulators, gas piping, and related equipment. From new installations and tank replacements to maintenance, troubleshooting, and repairs, we provide dependable solutions tailored to your system.

We also offer gas installation and propane piping, as well as custom propane fill stations and tank farms for larger storage needs.

Whatever your propane system needs, we focus on safe, reliable workmanship that keeps your equipment working when you need it most.

1000g Underground Propane Tank

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Annual Cleanings

Extremely Dirty Oil Tank Filter
Boiler Plugged with Soot from Years of Poor Maintenance

Regular boiler and furnace cleaning and maintenance can help your oil or propane heating system run safely, efficiently, and reliably. At Crosby Mountain Services, our annual tune-ups help identify potential issues before they turn into unexpected breakdowns or costly repairs.

We service oil boilers, oil furnaces, oil burners, propane boilers, propane furnaces, and related heating equipment throughout New Hampshire’s Lakes Region and White Mountains. A thorough cleaning and inspection can help improve system performance, extend equipment life, and keep your heating system ready for the demands of a New England winter.

#MaintenanceMatters—and keeping up with annual service is one of the best ways to stay ahead of heating problems.

About us

With over 10 years of experience, Crosby Mountain Services is a family owned and operated mechanical contractor proudly serving New Hampshire’s Lakes Region and White Mountains. We specialize in oil and propane heating system maintenance, repair, and installation for residential and light commercial customers.

From oil and propane boilers and furnaces to oil tanks, propane tanks, burners, and gas installations, we provide dependable service for the systems that keep your home or business comfortable through tough New England winters. Our services include routine heating system maintenance, troubleshooting, emergency repairs, equipment installation, and heating system upgrades.

We’re fully licensed and insured, and we take pride in providing honest recommendations, fair pricing, quality workmanship, and reliable service on every job. Whether you need an annual boiler or furnace tune-up, a heating system repair, a new oil or propane tank, or a complete equipment installation, you can count on us to get the job done right.

We treat our customers like neighbors because that’s what you are.

Crosby Mountain Services Oil & Propane Installation and Maintenance (603) 937-0731

Browse our From the Field page to see examples of oil and propane system installations, tank replacements, piping, and service work completed throughout the Lakes Region and White Mountains of New Hampshire. Each project reflects our focus on safe, reliable workmanship and attention to detail.

Serving the Lakes Region and White Mountains of New Hampshire

Crosby Mountain Services provides oil and propane maintenance, installation, and repair services throughout the Lakes Region and White Mountains of New Hampshire. We proudly serve homeowners and light commercial customers throughout our primary service area, with additional locations available depending on scheduling and travel distance.

Ashland

Holderness

Campton

Lincoln

Plymouth

Meredith

Laconia

Rumney

and surrounding areas!

What We Stand For

At Crosby Mountain Services, we believe good work is about more than fixing a problem—it’s about earning your trust. We stand for honest recommendations, dependable service, safe practices, and workmanship we’re proud to put our name on.

We believe in taking the time to understand the problem, doing the job properly, and treating every customer’s home or business with the same care and respect we would give our own. For us, “Done right, not twice” isn’t just a slogan—it’s the standard we hold ourselves to on every job.

That means no shortcuts, no unnecessary work, and no settling for “good enough.” We believe in doing things the right way the first time and standing behind the work we do.

Our commitment to quality extends beyond the job. As a locally owned New Hampshire business, we believe in supporting the communities that support us and building relationships that last.

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