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Top-Rated Furnace / forced air heating system install or replace pros in Sudbury - Updated Nov 2026

Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.5(
5,404
)
Gas Furnace / Forced Air Heating System - InstallOil Furnace / Forced Air Heating System - InstallHeat Pump - Install or Replace+35 more

Serving Sudbury, MA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Live Your Most Comfortable Life with a Company You Trust. \nWe offer Same Day Service and Next Day Installation! \n \nSila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it?s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe ? season after season. \nWe guarantee satisfaction and are proud to have earned over 7,000 ?A? ratings on Angie?s List and its prestigious Super Service Award!

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+6

65 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Genove Oil & Air Co
Genove Oil & Air Co
4.7(
217
)
Gas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - InstallOil Furnace / Forced Air Heating System - Install+43 more

Serving Sudbury, MA and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"My neighbor and I share a furnace room. A couple of days ago, Kevin from Genove was doing her annual service and noticed that the boiler for my baseboard heating had a slow leak. He shut it off so that it wouldn't flood our basement and notified me of the problem, explaining it in detail so I could tell my oil company what was wrong when I called them for emergency service. Thanks to Kevin noticing a problem in equipment he wasn't servicing, we avoided major damage."
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+2

Response time12 hrs
Response rate100%
12 neighbors recently requested a quote
Avatar for Airco Home Comfort Services LLC
Airco Home Comfort Services LLC
4.7(
33
)
Gas Furnace / Forced Air Heating System - RepairBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+43 more

Serving Sudbury, MA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"I whole heartedly recommend Airco. Their team was experienced, skillful, friendly and professional throughout the duration of this job, from Joe's first visit to my home to discuss air conditioning options to Derek and Cam's final touches on the duct system. I had complete confidence in them, as well as in Steve, Danny, Frank and Patrick. Additionally, Airco's connections to MassSave and Commerce Bank meant financing and payment options to suit my budget. No more hauling loud and heavy window a.c. units up from the basement. Instead, I am enjoying consistent cooling throughout my home with no noise whatsoever. I am a very happy customer!"
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+4

Response time2 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Ace Hardware Home Services
Ace Hardware Home Services
4.5(
53
)
Electric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - InstallOil Furnace / Forced Air Heating System - Install+43 more

Serving Sudbury, MA and surrounding areas

Approved (Corporate)

In business since 1967

Free estimates

Emergency services offered

"UIC was quick to respond and come up with the quote. Quote was very competitive against others. They were not so eager to do service on my old water heater though (I asked them to replace anode rods). I decided to go with them since their availability was good (2wks) and ratings on AngiesList were excellent while price was competitive. The job went well, though not without hiccups. I was expecting new boiler to be placed on the wall next to the foundation; though they built a new wall in the middle of the mechanical room, which costed me space; they said it will be 3K more to put in on the wall AFTER they arrived on the job with all the equipment and team. They refused to drain old water from my radiant heat system, saying I need a plumber to come for $290 per hour for 4 hours to drain the system and look for preexisting leaks. Had to hire some other plumber who took care of the problem for $215 in a mere hour. After the project was complete, system started to experience leaks. It was due to new drain connector that they decided to use for this project, and I was apparently first customer for it. After 3 unsuccessful attempts to fix the leak, they had to replace the connector, which addressed the issue. In addition, the system was eligible for rebate; however the rebate amount promised ended up being $450 less than actually paid; they quoted natural gas rebate though my system was on propane, which I told them upfront."
Heat Pump
Mitsubishi Hyper Heat
Multiple Ductless Heat Pump Installation
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+6

Response time1 day
Response rate100%
4 neighbors recently requested a quote
Avatar for Atlantic Heating & Air Conditioning
Atlantic Heating & Air Conditioning
4.1(
153
)
Oil Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+43 more

Serving Sudbury, MA and surrounding areas

Approved

In business since 1962

Free estimates

Emergency services offered

"We've used Atlantic Heating & AC for many years and wouldn't consider any other company. Atlantic is extremely responsive, priced reasonably, and they always do a great job. We've never once had to call them back to resolve any issues associated with their work, and they've done a lot of work over for us over the last 9 years. Recently, our water heater died very suddenly; I came home from my office and water was leaking out of the water heater onto the basement floor. Within minutes, their service manager was guiding me over the phone regarding which valves to turn off etc. and he had me take a few pics to send to him. The very next day, a serviceman was at our house installing a brand new, much better water heater than the house had come with, and we haven't had an issue yet, and this was several months ago. I'm a Realtor and Atlantic has bailed my seller clients out of HVAC issues on a moment's notice, so I will always be grateful for the excellent sales and service that we receive thanks to Atlantic Heating and AC."
Response time3 days
Response rate100%
5 neighbors recently requested a quote
Avatar for Pro Heating & Cooling
Pro Heating & Cooling
4.9(
25
)
Ductless Mini-split Heating System - Install or ReplaceHeat Pump - Install or Replace

Serving Sudbury, MA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"We chose Pro Heating & Cooling to do an oil to High Efficiency gas boiler conversion. Sean provided a clear and concise quote for the the full job, including a challenging removal of our oil tank. We needed the job done ASAP and Sean was able to accommodate our request and complete the full job in a day. His crews were prompt, and seamlessly coordinated to convert our combo forced hot water and air system while creating a much tidier and well laid out integration with the new boiler and indirect water heater. After the instillation Sean checked in and came to do minor adjustments to ensure the system was dialed in to run perfectly. Lastly, the pricing was great, and the instillation was designed to maximize the available Mass Save rebates for energy efficient systems. I'd recommend Pro Heating without hesitation (as I did to a friend/neighbor)!"
Oil Boiler Replacement
Single zone DMS
Single zone DMS
Two  Tankless Water Heaters
Response time2 days
4 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Christie Cooling and Heating Services, Inc.
Christie Cooling and Heating Services, Inc.
4.5(
54
)
Heat Pump - Repair or Service - For BusinessThermostat - Install or Replace

Serving Sudbury, MA and surrounding areas

Approved

In business since 2017

Credit card accepted

Customers say: Quick response

"Taylor uncovered the problem with my central air in a fairly short time. A previous Heating contractor disconnected the a/c wiring when they installed a new heating system. That contractor didn't handle a/c......so wasn't concerned about that system even though I had called and told him about the a/c not working."
Response time7 hrs
2 neighbors recently requested a quote
Recommended by85%of homeowners
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FAQs for furnace / forced air heating system install or replace projects in Sudbury, MA

Converting from an oil furnace to an electric furnace isn't a simple swap—the oil system needs to be completely removed before installing the electric furnace. You'll need a full electric system installation, but you might be able to reuse existing ductwork if it's up to current safety standards. You’ll need to budget for a new electric furnace installation, which costs between $1,800 and $6,200, including professional removal, proper disposal, and safe installation of the new system.

Electric furnaces are 100% efficient at converting electricity into heat. However, some of that heat can be lost as it travels through your home's ductwork or escapes through poorly insulated areas. That's why regular duct maintenance and proper home insulation are important to maximize your furnace's efficiency and reduce heat loss, ensuring consistent warmth and lower energy costs.

With proper maintenance, an electric furnace can last anywhere from 20 to 30 years, outlasting the average gas furnace's lifespan of 15 to 20 years. To keep your electric furnace running efficiently, schedule regular cleanings, tighten connections, and have inspections done before winter arrives. With routine maintenance, you’ll ensure consistent, safe heating for years to come.

The size of the electric furnace you need depends on factors like your home's square footage, climate, and insulation quality. As a general guideline, those who live in warmer climates should multiply their square footage by 30 to 35 BTUs, while those in cooler areas should multiply it by 50 to 60 BTUs.

Consulting with an HVAC professional can help you determine the exact size that's right for your home.

An electric furnace works by converting electricity into heat using high-resistance heating elements. A blower then pushes the warm air through your home's ductwork, distributing heat evenly throughout your space. Since there's no combustion involved, electric furnaces eliminate the risks associated with gas furnaces and provide consistent, reliable heating when properly installed.

An electric furnace uses between 40 and 80 kilowatts per day to heat your home. The exact amount it uses depends on factors like your home's size, insulation, and overall energy requirements. Larger homes or those with poor insulation use more energy than smaller, well-insulated spaces. A professional furnace assessment can help confirm the ideal unit size for your needs.

The Sudbury, MA homeowners’ guide to furnace / forced air heating system installs or replaces

From average costs to expert advice, get all the answers you need to get your job done.