Furnace Installation in Plymouth, MA

Stay Warm All Winter Long

Professional furnace installation that keeps your family comfortable when New England winters hit hardest.

A basement room with a water heater on the left and a furnace with ventilation ducts in the center.

We Leave Our Customers Smiling

Ready for 5-Star Level Service?

A person in a white shirt is inspecting and adjusting the internal components of a wall-mounted boiler, with various pipes and valves visible.

Plymouth County Furnace Installers

Reliable Heat When You Need It

Your furnace breaks down on the coldest day of the year. It’s 15 degrees outside, and your family’s counting on you to fix it fast. You need a new furnace installed quickly, correctly, and by someone who knows what they’re doing.

That’s where proper furnace installation makes all the difference. When your new system is sized right and installed by experienced professionals, you get consistent warmth throughout your home, lower energy bills, and the confidence that your heating won’t fail when you need it most.

No more worrying about whether your furnace will make it through another winter. No more emergency calls in the middle of the night. Just reliable, efficient heat that keeps your family comfortable and your utility bills manageable.

Trusted Plymouth MA Heating Contractors

12,000+ Customers Trust Our Work

Dempsey Energy has been keeping Plymouth County families warm for years. We serve over 12,000 customers across the region, building relationships that last well beyond the initial installation.

What sets us apart is our focus on getting things right the first time. We understand that furnace installation isn’t just about putting in equipment—it’s about ensuring your family stays comfortable and safe all winter long.

Our team knows Plymouth County’s unique heating challenges, from older homes that need special attention to the harsh winters that demand reliable, efficient systems.

A technician wearing safety glasses and a cap inspects a heating system. They use a tool to examine the machinery inside an open panel. Red gloves protect their hands as they assess the components and wiring.

New Furnace Installation Process

Here's How We Install Your Furnace

First, we assess your home’s heating needs and current setup. This isn’t a quick glance—we measure your space, check your existing ductwork, and determine the right size furnace for your home. Getting the sizing wrong means higher bills and uneven heating, so this step matters.

Next, we remove your old system safely and prepare the installation area. This includes checking gas lines, electrical connections, and ensuring everything meets current safety codes. No shortcuts, no rushing through the important details.

Then comes the installation itself. We position your new furnace, connect all gas and electrical lines, test the system thoroughly, and walk you through the operation. You’ll know exactly how your new system works and what to expect from it.

Finally, we clean up completely and schedule your first maintenance visit through the Dempsey Comfort Club. Your installation comes with warranty coverage and ongoing support to keep your system running efficiently for years.

A technician in protective gear and red gloves works on a large piece of equipment. He adjusts a blue cylindrical component, with various pipes and wires visible. There's a white device on the wall and a black barrel-shaped object below.

Ready to get started?

Explore More Services

About Dempsey Energy

Get a Free Consultation

Gas Furnace Installation Services

What's Included in Your Installation

Every furnace installation includes proper sizing calculations to ensure your system heats your home efficiently without wasting energy. We handle all permits and inspections required in Plymouth County, so you don’t have to navigate local regulations yourself.

Your installation covers complete removal of your old system, professional installation of your new furnace, and thorough testing to ensure everything operates safely and efficiently. We also provide a complete walkthrough of your new system’s operation and maintenance requirements.

Plymouth County’s older homes often require special attention during installation. Our experience with local housing stock means we know how to work with existing ductwork, tight spaces, and the unique challenges that come with New England home construction. We also offer membership in the Dempsey Comfort Club for ongoing maintenance and priority service.

A technician wearing a blue polo shirt, cap, and red gloves is inspecting or repairing a wall-mounted appliance, possibly an HVAC unit, inside a white casing.
Most furnace installations in Plymouth County take 4-8 hours, depending on your home’s setup and the complexity of the installation. If you’re replacing an existing furnace with a similar model, the process is typically faster. However, if you’re upgrading to a different type of system or need modifications to your gas lines or ductwork, it may take longer. We provide a realistic timeline during your initial assessment so you know what to expect. We work efficiently but never rush through safety checks or proper installation procedures.
Furnace sizing depends on several factors specific to your home: square footage, insulation quality, ceiling height, number of windows, and local climate conditions. Many Plymouth County homes are older and may have unique heating requirements. A furnace that’s too small won’t keep you warm during harsh winters, while an oversized unit wastes energy and creates uneven heating. We perform detailed load calculations to determine the exact capacity your home needs, ensuring optimal comfort and efficiency year-round.
Yes, we provide emergency furnace installation services throughout Plymouth County, even during winter storms. When your furnace fails during the coldest months, waiting isn’t an option. We prioritize emergency installations to get your heat restored as quickly as possible. While emergency installations may take slightly longer due to weather conditions, our experienced team works safely and efficiently to get your new system up and running. We stock common furnace models to minimize delays during peak winter demand.
Absolutely. We handle all necessary permits and inspections required for furnace installation in Plymouth County. We’re familiar with local building codes and requirements, ensuring your installation meets all safety standards. This includes coordinating with local inspectors and ensuring all work passes required inspections. You don’t need to worry about navigating permit processes or scheduling inspections—we manage the entire process from start to finish, keeping your installation on track and compliant with all local regulations.
Gas furnace installation requires connection to your home’s natural gas line and proper venting to safely remove combustion gases. Electric furnaces need adequate electrical capacity and don’t require gas connections or venting. In Plymouth County, gas furnaces are often preferred due to lower operating costs and reliable performance during power outages. However, homes without existing gas service may find electric installation more straightforward. We evaluate your home’s current utilities and your heating preferences to recommend the best option for your specific situation and budget.
Your furnace installation includes both manufacturer warranty on the equipment and our workmanship warranty on the installation itself. Manufacturer warranties typically cover parts for 5-10 years depending on the model you choose. We warranty our installation work to ensure everything functions properly. Additionally, Dempsey Comfort Club members receive priority service and maintenance to keep their systems running efficiently. We stand behind our work and provide ongoing support to address any issues that arise after installation, giving you confidence in your investment.