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Gas Furnaces

Home
HVAC
Furnaces

Reliable Heat. Built for Cold New England Winters.

When the temperature drops, you need more than a space heater or ductless system—you need dependable, powerful heat. Our gas furnaces are designed to keep your home warm, efficient, and worry-free, even during the coldest stretches of the year.

At SumZero, we install modern furnace systems built for performance, safety, and energy savings—backed by expert design and installation you can trust.

Why Choose High Efficiency Gas Furnaces?

Old furnaces can waste fuel, hike up your utility bills, and struggle to keep up when it matters most. Our high efficiency gas furnaces solve all that—with comfort that’s even, quiet, and cost-effective.

  • Up to 98% fuel efficiency
  • Sealed combustion for safety and performance
  • Quieter operation and faster warm-up times
  • Smaller carbon footprint and lower monthly bills
  • Eligible for rebates and Mass Save® financing

What to Expect from a Professional Gas Furnace Installation

Smart, Customized System Design

We don’t take shortcuts. Every gas furnace installation begins with a full assessment of your home’s layout, insulation levels, and comfort needs—ensuring you get the right size and setup.

Clear Understanding of AFUE Ratings

Not all furnaces are created equal. We help you compare models using AFUE ratings (Annual Fuel Utilization Efficiency)—so you know exactly how much of your energy dollars are going into actual heat. The higher the AFUE, the lower your monthly bill.

Seamless Integration with Whole Home Heating Systems

Whether you’re replacing an old furnace or upgrading your home heating system, we’ll handle everything—ductwork modifications, smart thermostat integration, zoning, and more. It’s all part of our turnkey approach.

Related Services

Central Air Conditioning

Installation, Replacement, Repair and Maintenance

Commercial HVAC

Light commercial, rooftop units, etc.

Water Heaters

Standard, Tankless and Hybrid Water Heaters

Thermostats & Zoning

Thermostats, zoning, smart control systems

IAQ

Indoor Air Quality Systems

Ductwork & Ventilation

Custom ductwork, Ventilation and Duct Modifications, etc.

Want to learn more about the areas we serve? Discover our service area and see how close we are to helping you.
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Furnace Solutions
Furnace Installation
Furnace Replacement
Furnace Repair
Furnace Maintenance
Let’s Make Home Comfort Simple
Got questions or ready to get started? Just share a few quick details — our team is here to help you find the perfect solution, no pressure.

What Local Homeowners Are Saying

See how SumZero has helped local homeowners stay comfortable year-round with energy-efficient heat pump solutions.

Great service, great planning and installation. Superb team of technicians who kept us informed throughout the process. We are 100% satisfied.
Cheryl R.
SumZero were perfect throughout my major furnace and AC replacement with a high quality heat pump system and duct replacement. The people they got for every part of the upgrade were incredible, and the team themselves were professional and responsive to my questions. I could not be happier with the entire process, and would recommend them wholeheartedly. And as a cherry on top, the cost was 1/3 lower than another quote I got for the same exact system. So they delivered excellent service for a reasonable price. That's a win-win in my book.
Derrick McKee
The first word that comes to mind is OUTSTANDING when I think about SumZero. My husband and I just bought a home with a very old HVAC system and knew we needed an update. The first thing we did was speak with Sarai Ortiz who explained to us all of the steps we needed to take in order to see what system was best for us. She was very helpful and followed up with us throughout the entire process. Hearing that we needed a new system, David Sampaio promptly came to our house to give us a quote on what system he thought was best. My husband loved what he presented and did not hesitate to take the offer. Since we did not have the expenses for the system at hand, Sarai walked us through getting a heat loan through Mass Save. This process was so easy and the loan was finalized within a week! We were so excited to get things rolling, but of course things were on hold due to the pandemic. Even though we had to wait a couple more weeks than anticipated, Sarai and David kept us in the know and answered every question that we had. Once the time came to have the new system, SumZero was more than happy to make us a priority! The workers were on time, efficient, and very kind. Not once did I worry or question the quality of work they were doing. After two days, the work was complete! Daniel was able to walk me through what was installed and how to use the new thermostat, which we love! We now have a home that is comfortable to live in no matter the season. If you’re looking for a new HVAC system, SumZero is the one to call!
Danielle Montepeque

Not Sure Where to Start? We’ll Guide You

Let our experts design the right heating and cooling solution—customized for your comfort, your layout, and your energy goals. No pressure. Just clarity.

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