Furnace Installation in Whitman, MA

Your Furnace Died at the Worst Time

Professional gas furnace installation that keeps your family warm all winter long.

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.

Professional Gas Furnace Installer

Reliable Heat When You Need It

Your old furnace picked the coldest day of the year to quit. That’s how it always happens.

You need a new furnace installation that works right the first time. No callbacks, no surprises, no wondering if you’ll wake up to a freezing house again.

When we install your new gas furnace, you get consistent heat in every room. Your energy bills drop because modern systems work smarter, not harder. And you stop worrying about whether your heating system will make it through another Massachusetts winter.

Whitman Furnace Installation Experts

We Know Plymouth County Homes

We’ve been installing furnaces throughout Plymouth County for years. We understand how older New England homes heat differently and what systems work best in this area.

Our team handles everything from permits to cleanup. We’re not the guys who disappear after installation – we’re here when you need service, maintenance, or have questions about your new system.

Over 12,000 local customers trust us with their heating and cooling needs. That’s because we show up when we say we will and do what we promise.

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 Exactly What Happens

First, we come out and properly size your new system. Too many contractors guess or just replace what you had. We calculate your home’s actual heating needs so your new furnace runs efficiently.

Next, we handle all permits and schedule the installation. We remove your old system, install the new gas furnace, and connect everything according to Massachusetts code. We test the system thoroughly before we leave.

Finally, we walk you through how everything works and set you up with our Dempsey Comfort Club for ongoing maintenance. You get a system that’s installed right and support that lasts.

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

Complete Furnace Installation Service

Everything Included, Nothing Extra

Your furnace installation includes proper sizing calculations, all necessary permits, professional installation, and thorough testing. We handle the removal and disposal of your old system.

Many Whitman area homes need ductwork adjustments when upgrading to a new furnace. We evaluate your existing ducts and make recommendations that improve airflow and efficiency. No surprises – we discuss everything upfront.

You also get manufacturer warranty protection and the option to join our Dempsey Comfort Club for priority service and maintenance discounts. We’re not just installing equipment – we’re setting up your home’s heating system for years of reliable operation.

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 residential furnace installations take 4-8 hours, depending on your home’s setup and whether any ductwork modifications are needed. We typically complete the job in one day. If we encounter unexpected issues like outdated electrical connections or significant ductwork problems, we’ll discuss timeline changes with you immediately. We never rush an installation just to finish faster – your safety and the system’s performance are more important than speed.
Furnace sizing depends on your home’s square footage, insulation quality, window efficiency, and ceiling height. We perform a proper load calculation rather than just matching your old system’s size. Many older furnaces were oversized, which wastes energy and creates uneven heating. An oversized furnace cycles on and off too frequently, while an undersized unit runs constantly and never keeps you comfortable. Our technicians measure and calculate to get the sizing exactly right.
In Massachusetts, gas furnaces are typically more cost-effective to operate than electric systems. Natural gas costs less per BTU than electricity, so your monthly heating bills will usually be lower with gas. Gas furnaces also heat up faster and maintain more consistent temperatures. However, if your home doesn’t have gas lines already installed, the upfront cost might favor electric. We evaluate your specific situation and explain the long-term costs of each option so you can make an informed decision.
Furnace installation costs vary based on the system size, efficiency rating, and any additional work needed like ductwork modifications or electrical upgrades. Higher efficiency systems cost more upfront but save money on monthly bills. We provide detailed estimates that break down equipment costs, labor, permits, and any additional work. No hidden fees or surprise charges. We explain all your options so you can choose the system that fits your budget and heating needs.
We install several reliable furnace brands that perform well in New England’s climate. The best brand for your home depends on your budget, efficiency goals, and specific heating needs. We focus more on proper installation than brand loyalty – even the best furnace won’t work right if it’s installed poorly. During your estimate, we explain the differences between brands and efficiency levels, then recommend systems that offer the best value for your situation.
Yes, we pull all necessary permits for your furnace installation and ensure the work meets Massachusetts building codes. Permit requirements vary by municipality, but most furnace installations require permits for safety inspections. We handle the paperwork and coordinate with local inspectors so you don’t have to worry about compliance issues. Proper permits protect you if you ever sell your home and ensure the installation meets all safety standards.