Serving Mercer Island, WA and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
"The serviceman was very friendly, informative and efficient . He didn't try to sell me repairs I didn't need! I will always call AAA for all maintenance and furnace repair in the future. I'm glad I found an honest company for once !!"
Serving Mercer Island, WA and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"Mark's guys went above and beyond to replace my old furnace with a high efficiency model from Lennox, and upgrade my old electronic water heater to a gas water heater. It's done on time and passed inspection. We highly recommend their services."
Serving Mercer Island, WA and surrounding areas
Approved
In business since 1921
Emergency services offered
Warranties offered
"Our Greenwood Technician, Sam, really provides us assurance that our gas furnace is still functioning adequately, but detailed why it may be time to consider replacing our aging water heater and furnace water pump system before likely damage occurs. Sam is a most genuine and reassuring professional - He helps us know just what may need maintenance and what is still sound. It is a joy to work with a trustworthy and competent professional"
Serving Mercer Island, WA and surrounding areas
Approved
In business since 1983
Warranties offered
Customers say: Quick response
"Another company told me I needed a blower motor and I shopped around for prices. Bob informed me that I may not need a motor. After describing the situation and listening to his very detailed and knowledgeable explanation, I have decided to wait and test the blower some more. Bob was very honest and I will hire him next time I need my furnace repaired."
+2
Serving Mercer Island, WA and surrounding areas
Approved
In business since 1975
Free estimates
Emergency services offered
"Evergreen installed a new hybrid heat pump system in my house. After researching the options, Evergreen was not only the most reasonable price, but they also scoped out a hybrid system where they would install new duct work and a single air exchanger in the attic and a minisplit in the basement. Scott, the sales person, did not try to upsell me on number of zones (others tried to get me to get 2 units in the basement) and after 2 months with the system, the single unit in the basement is heating the whole basement to our needs. All this was done at a price still considerably lower than the "standard" system price being offered by one of the bigger, similarly named companies. Evergreen was also the only company to propose a hybrid system where they would install a single exchanger in the attic and run new ceiling ducts to the rooms. This was appealing because we don't need to have the cassettes in each room and we didn't need to line the outside of the house with conduit for the cassettes (also the bathroom gets heat, too). Scott was great to work with, answered all my questions, and did his best to size the system correctly. Installation was smooth. There was a small hiccup where the installer accidentally broke a basement window, but Evergreen squared it away. Don and his team were great and the inspections passed. After install support has been great. Denise has been responsive to my questions. Overall, the experience was great with Evergreen and I highly recommend them."
+9
Serving Mercer Island, WA and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"Allred is THE best. I had mini-split AC/heat installed almost a year ago. I love it and it's saving me significant money over using my central heating system. And no more hassle with portable air conditioners. I should have done this years ago. Even better is the 5 star customer service. Last week I had difficulty turning on the AC for the first time since last summer. I urgently called David on a Sunday. He immediately dove in to get me scheduled. Sebastian called me before making an on-site visit. Patiently walked me through a simple troubleshoot and shazaam! I turned right on. A+++ to both of them."
+9
Serving Mercer Island, WA and surrounding areas
Approved
In business since 1997
Free estimates
Warranties offered
"This company has been consistently good for me and my house in the last 11 years. Having to deal with changing a furnace, a water heater, and last week a heat pump , is not for the faint of heart. I have to say, John and Debbie made it relatively painless. They worked on my timetable and were very accommodating. Most of the technicians that installed my furnace 11 years ago are still there. Those guys are fast and efficient. AND they clean up after themselves! Which is something I can't say about the electrician, the roof people, the window replacement guys I've had to deal with. I never write reviews (unless I am mad beyond reason:), but for Bassett - thank you guys for being so easy on my nervous system!"
Serving Mercer Island, WA and surrounding areas
Approved
In business since 1954
Emergency services offered
Warranties offered
"Rob came out to review our existing system and helped us figure out what kind and brand of heat pump would work best with our system. He was very patient and informative, and answered all our questions without any pressure or up-sells (we had quotes from five providers). We signed the contract and payed our deposit in June 2021, but unfortunately global supply chain issues delayed the parts being received. Day & Nite were communicative of the issue and offered several alternatives, including a refund of the deposit. We opted to wait for the parts. It took four months, but the techs (lead by Jeff B) were fantastic and very accommodating in how we wanted piping and wiring routed. We are very pleased with how it's turned out and loved working with a local (and family owned!) company! Our gas water heater is due for replacement soon, and we'll be coming back to Day & Nite for that!"
Serving Mercer Island, WA and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"The professional technicians at AirPros were responsive and explained everything regarding the status of my furnace. I am pleased with their service and value...I would highly recommend them in the future."
Serving Mercer Island, WA and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Professionl! From beginning to completion. We highly recommend this company for your all your furnace jobs."
+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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Discover how much an electric furnace costs based on factors such as unit size, local labor rates, electrical upgrades, and ductwork condition.