Serving East Derry, NH and surrounding areas
Approved
In business since 2016
Credit card accepted
Customers say: Quick response
"Brian was very professional. He is a rear breed in the business world. He will be our go to company for anything to do with our heating needs"
Serving East Derry, NH and surrounding areas
Approved
Super Service Award Winner
In business since 1932
Free estimates
Emergency services offered
"Palmer Gas & Oil just did an entire replacement of the 20-year-old central HVAC + humidifier + thermostats two-zone system in my home with a new state-of-the-art total system and I could not be more pleased. From start to finish each employee was personable, extremely knowledgeable, very courteous, and the consummate professional. There is truth to the adage that you get what you pay for and I know I got the best. All Gold Stars!"
+11
Serving East Derry, NH and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"Very professional and experienced and friendly I talk to them this morning they came and fix my furnace today I will definitely call them again"
+19
Serving East Derry, NH and surrounding areas
Approved
In business since 2016
Free estimates
Emergency services offered
"They were very professional and did a fantastic job. They showed up on time, installed the system in a timely manner, spent extra time unclogging all pipes and faucets from the excess minerals. They arranged for the electrician to add extra plug sockets. They did a great job explaining the system and cleaned up after themselves."
+172
Serving East Derry, NH and surrounding areas
Approved
In business since 2020
Free estimates
Credit card accepted
"The gentleman from Kingdom surpassed every other furnace service that we have EVER had. He called within 10 minutes of our request on home advisor promised to be here within an hour and he arrived 45 minutes later. He diagnosed the problem with our furnace went to the store and returned with a new pressure release valve within a half hour. Installed it tested it, bled the lines which immediately improved the heat in a cold bedroom. I can't say enough about how totally excellent this repair man was if I could give 10 stars I would."
+67
Serving East Derry, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Credit card accepted
"Jake diagnosed a long running problem with my ac system (a poorly performing thermostat) and fixed it."
Serving East Derry, NH and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"It went very well. They had a good price. They got everything done in one day. The workers were very polite and respectful in my property. I highly recommend them to all."
Serving East Derry, NH and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"Kyle did a great job servicing my heat system. Brought out parts that needed to be replaced before our heat was turned on. Labor price was less than I expected and comparable to others I have used in the past. Would definitely recommend him."
Serving East Derry, NH and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"Amazing service! very knowledgeable, clean work and super respectful! if you find yourself needing any help when it comes to your heating or Air Conditioning system, call Keenan without a doubt."
+56
Serving East Derry, NH and surrounding areas
Approved
In business since 2003
Free estimates
Customers say: Quality work
"Joe did an outstanding professional job installing our new system. He noticed that the LP gas supply pipes were undersized for the systems in our home and upgraded this as well. Joe and his team showed up on-time and quickly had us up-and-running again!"
+1
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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