Serving East Haddam, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2014
Free estimates
Emergency services offered
"Excellent. I highly recommend this company. Prompt service, very fair pricing. Researched my furnace to better understand my unit and attained parts needed to repair within a 1/2 hour. Their technician was a great guy."
Serving East Haddam, CT and surrounding areas
Approved
In business since 2018
Free estimates
Small jobs welcome
"There were some issues when system was first installed. A lot of "pipe knocking" and radiators not heating up. This being a hundred-year-old house I could understand the problems. After speaking with their excellent customer service team, the service crew returned and resolved all issues! I plan on using Onofreo Home Comfort Systems for all my HVAC needs in the future."
+27
Serving East Haddam, CT and surrounding areas
Approved
In business since 2014
Free estimates
Emergency services offered
"After meeting Ron the owner, he educated me of the benefits of replacing my 25 year old oil furnace and central air unit with a very efficient HEAT PUMP/AC unit. A real no Brainer decision. All electric, energy star rated and no more fuel oil. After a very reasonable quote, with veterans discount, I said I'm in. Two of his Team showed up on a Wednesday around 8am and by Friday around Noon my AC was on. Friendly, professional, attention to detail. Would highly recommend Cawiamca for all Heating and AC projects. Great company."
+2
Serving East Haddam, CT and surrounding areas
Approved
In business since 1995
Free estimates
Emergency services offered
"Had a great experience with the 2 guys that came. One looked after the air conditioning system and the other the furnace and thermostat. found them to be knowledgeable, personably, and professional in there dealings."
+22
Serving East Haddam, CT and surrounding areas
Approved
In business since 1991
Free estimates
Emergency services offered
"Air Inc. installed a new 2 ton Goodman central air conditioner in my 73 year old lake house. David and his installation team were very professional and did a very good job of retro-fitting the new air conditioning coil in a very tight space between the furnace and the air duct transition tinwork. Air Inc. teamed up Joe from Welburn Electric in Cheshire to do the electrical wiring from the main panel to the outside fan/compressor unit. Joe also did an outstanding job."
+35
Serving East Haddam, CT and surrounding areas
Approved
In business since 1998
Free estimates
Emergency services offered
"Highly recommended. I hired Bruce to replace my ancient heating system, and he and his crew did the job with great care, skill, and professionalism. From my first contact with him, Bruce was patient, knowledgeable, and eager to make sure all my questions and concerns were answered and addressed. He and his crew were kind, considerate, and safe. I would have no hesitation about hiring Williams & Associates again, their services are outstanding."
Serving East Haddam, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"Excellent response time to no heat on an extremely cold day. Eventually replaced boiler & heating system; knowledge and craftsmanship best I've hired. Great value for the work and level of service provided. Highly recommend this company."
+30
Serving East Haddam, CT and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"The technicians were clean, professional and punctual and did the job as was planned."
+5
Serving East Haddam, CT and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"They did an exceptional job installing the heat pump and I've been more than satisfied with the service. They are friendly, professional and efficient. I'd recommend them to anyone."
+60
Serving East Haddam, CT and surrounding areas
Approved
In business since 2007
Free estimates
Warranties offered
"I went perfect Michael let me know what he was doing i tested both electric sockets before he left to make sure the work he did excellent job he cleaned up behind himself"
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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