
Serving Millis, MA and surrounding areas
Approved (Corporate)
In business since 1989
Free estimates
Emergency services offered
"Great. Technician John Gulstrom. He was able to replace part and check system quickly. Went very well."





+6


Serving Millis, MA and surrounding areas
Approved (Corporate)
In business since 1989
Free estimates
Emergency services offered
"Great. Technician John Gulstrom. He was able to replace part and check system quickly. Went very well."





+6

Serving Millis, MA and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1948
Free estimates
Emergency services offered
"Gil, RAF and Luis installed a new Lenox furnace/AC in my condo yesterday. They were here on time, worked quickly and were done earlier than I expected. All my interactions with them were informative and friendly and at the conclusion of the installation they took the time to show me, and explain to me what they had done. The new thermostat is a bit of a challenge, but they got me started in the setup process so that I could complete it. Before they left they thoroughly cleaned the areas they had worked in and traveled through. You will be very fortunate if you get this crew to install your new furnace."





+62

Serving Millis, MA and surrounding areas
Approved (Corporate)
In business since 1989
Free estimates
Emergency services offered
"I wanted to replace an out dated oil furnace with an efficient low carbon hvac system that heated my home in the winter and cooled it in the summer. I checked out Angies List for hvac providers in my area, made some comparisons, and contacted vendors. I chose N.E.T.R. based on the reviews on Angies List and the product presentation by the sales rep. for N.E.T.R.
The product performance,installation time frame, and cost matched exactly the proposal submitted to me by N.E.T.R. The technical support staff - Adam and Jose' - installed the Mitsubishi heat pump system with a professional skill level that I found to be reassuring. Russell Dodd, the sales rep., provided detailed support to my various questions. His attention to my product order-installation was more than I expected.
I feel confident that the product and services provided by N.E.T.R. will perform to my expectations.
"





+9

Serving Millis, 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)!"





Serving Millis, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2005
Free estimates
Warranties offered
"This company has been awesome. I am a Worcester resident and have no clue about heating systems. David Clay and his team came out to look at my boiler. It was not firing. Winter is fast approaching. David provided a free estimate and also encouraged me to look at quotes from other competitors. I did. And his pricing was best aligned with my budget. His quality of work is amazing. David and his technicians fielded all my questions- I had many. Their customer service is amazing as they had all the patience and courtesy to educate me about the work and boiler systems. My experience as a customer is that Clay Plumbing Heating offers the best quality, professional craftsmanship, best client service, and at the best rates."





+21

Serving Millis, MA and surrounding areas
Approved
In business since 2015
Warranties offered
Small jobs welcome
"I had a great experience. Technician was able to diagnose and fix the issue. He also answered all my queries for a possible HVAC replacement for a heat pump. I would highly recommend."


Serving Millis, MA and surrounding areas
Approved
In business since 1928
Emergency services offered
Warranties offered
"After initial installation , system failures required replacing defective heat pump."





Serving Millis, MA and surrounding areas
Approved
In business since 2009
Free estimates
Credit card accepted
"SumZero Energy Systems have been excellent in the last several months with supporting the replacement of my air conditioning system in my old condo as well as servicing my furnace. A price comparison with other local companies also prooved SumZero Energy Systems offered the best price. When I purchased a home a few months later, I called them to take a look at my air conditioning system and furnace because I felt as though they had provided such excellent service in the past. It was a no-brainer to ask for consultation regarding the heating and cooling systems in my new home! When I contacted them for assistance or consultation, they are usually quick to respond and provide appointment times had a very convenient window! They have shown up on time to all of the appointments I have had. David S. has always taken the time to explain everything thoroughly and answer all my questions. I highly recommend SumZero Energy Systems!"





+9

Serving Millis, MA and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
"Everyone I dealt with was very courteous and professional. Everything went well and the system was installed in one day. Derek came back to check the work the next day and show me how the remote control works the system. I was very satisfied with this company."

Serving Millis, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Emergency services offered
Warranties offered
"Installed central heat pump system on time with no issues. Technicians were professional and did a great job. Great communications from proposal through installation phases of project. Highly recommended."





+50
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.
From average costs to expert advice, get all the answers you need to get your job done.

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