Expertise
Our Focus Areas
We specialize in oil and propane heating services for residential and light commercial customers throughout the Lakes Region and White Mountains of New Hampshire. Our work covers everything from system installations and routine maintenance to repairs, emergency service, and tank replacement.
Whether it’s indoor or outdoor equipment or full system upgrades, we focus on safe, reliable solutions built to handle tough New England winters. Our goal is simple—keep your heating systems running efficiently and your property protected year-round.
1
Oil Services
We provide service and installation for oil heating systems and oil tanks, helping keep homes safe, warm, and running efficiently. From boilers and furnaces to complete fuel systems, we handle everything from new installations to maintenance and repairs.
We install and replace oil tanks designed for safe, long-term fuel storage, including both single-wall and double-wall options. Single-wall tanks are a standard configuration and require proper placement and regular inspection to ensure safe operation. Double-wall tanks provide an added layer of protection with a secondary containment barrier to help reduce the risk of leaks and environmental damage. We ensure all tanks are properly installed, securely connected, and compliant with safety standards, whether located indoors or outdoors.
Our focus is on reliable workmanship and safe operation so your heating system performs when you need it most.
2
Propane Services
We provide installation, service, and maintenance for propane systems, delivering safe and reliable fuel solutions for heating, appliances, and equipment. Our work includes propane tanks, regulators, gas lines, and system components, along with direct vent heaters that provide efficient, sealed-combustion heating with safe outdoor venting. We also offer propane tank sales in a variety of sizes and setups to fit your needs.
We install propane piping systems that are safe, code-compliant, and built for long-term reliability. In addition, we design and build fill stations and tank farms, creating efficient, organized systems that meet safety standards and support larger propane storage and distribution needs.
3
Annual Cleanings
We offer annual tune-ups for heating systems and water heaters to keep your equipment running safely and efficiently. Regular maintenance helps improve performance, reduce energy use, and catch small issues before they turn into costly repairs.
During a tune-up, we perform a detailed inspection of the entire system, including the heating unit, controls, safety switches, and fuel delivery components. We also inspect oil tanks for signs of leaks, corrosion, or wear, and check venting systems to ensure proper airflow and safe exhaust of gases. For oil systems, we evaluate lines, filters, and combustion performance, and verify that all safety standards are met.
It’s a thorough process designed to ensure everything is operating safely, efficiently, and reliably while extending the life of your equipment.
About us
With over 10 years of experience, we’re a family-owned and operated business proudly serving the Lakes Region and White Mountains of New Hampshire. We know how tough New England winters can be, and we’re here to make sure your oil and propane systems are ready to handle them.
From installations to maintenance and emergency repairs, we bring dependable service, hard work, and attention to detail to every job. We’re fully licensed and insured, so you can have confidence knowing your home or business is in good hands. Around here, doing the job right matters—and we stand behind our work.
We treat our customers like neighbors, because that’s what you are. When you call us, you’re getting honest service, fair pricing, and the kind of reliability you can count on when the temperature drops.
Browse our projects 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.
Our Projects
What We Stand For
Crosby Mountain Services stands for reliable, honest work and a commitment to doing the job right the first time. With a focus on safety, quality workmanship, and attention to detail, every project is completed to the highest standard. Built on years of experience and strong local roots in New Hampshire, our company takes pride in serving customers with dependable service they can trust. Taking care of our community is a driving factor in everything we do, and we’re proud to support the people and places we serve.