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Find Furnace / forced air heating system install or replace pros in Mercer Island

Avatar for AAA Heating & Air Conditioning
AAA Heating & Air Conditioning
4.8(
237
)

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 !!"
Additional Photos
Additional Photos
Additional Photos
Our Service Center
Response time1 day
14 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Airpros Energy
Airpros Energy
4.7(
88
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"Mark and his guys helped us install a new AC last summer. They arrived on time and did a great job! So when I was looking for someone to do the maintenance of our furnace, I called them. Todd went above and beyond my expectations. He finished the job and even helped fix my hinge. Both Mark and Todd strike me as very genuine people. And I would definitely hire them again!"
AC Promo
Comfort Built for the PNW
2 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Greenwood Heating and Home Services
Greenwood Heating and Home Services
4.6(
424
)

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"
Signature Install
Greenwood Plumbing
Greenwood Fleet
Greenwood University
Response time11 hrs
Response rate90%
15 neighbors recently requested a quote
Avatar for Action Heating & Air Conditioning
Action Heating & Air Conditioning
4.9(
224
)

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."
Rheem Super Quiet 80
New Rheem  furnace
New Furnace & AC
New Furnace & AC
indoor unit

+2

Response time12 hrs
Recommended by99%of homeowners
Avatar for BASSETT HOME HEATING INC.
BASSETT HOME HEATING INC.
4.5(
66
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"I worked with them multiple times, in Bothell and Everett: Furnace installation, fireplace installation, furnace repair, fireplace repair, furnace maintenance. Always impressed with their quality of work, speed, and prices."
Additional Photos
Response time2 days
11 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Evergreen Home Heating & Energy
Evergreen Home Heating & Energy
4.5(
102
)

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."
Additional Photos
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Additional Photos

+9

Response time5 hrs
Response rate98%
5 neighbors recently requested a quote
Avatar for Allred Heating Cooling Electric
Allred Heating Cooling Electric
4.7(
151
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"I'm a member of the excellent Allred subscription service that provides for consistent maintenance checkups for all installed equipment. I scheduled a tune for my heat pump, Allred was thorough and quick in setting the appointment, and communication of status and pending arrival time was on point. Raphael arrived, walked me through the maintenance steps he planned to take and the sequencing of the job, gave me an anticipated time to complete, and was at work immediately. All stated deliverables were met, and he provided a thorough after service report complete with pictures to show the work that was done and the recommended additional maintenance that would be wise to do to extend the life of our equipment. He was courteous, pleasant, clean and well-spoken, and I felt completely comfortable with him working in our home. I will continue to recommend Allred to my friends seeking HVAC services, and have sent several folks their way already. Very happy customer, exceptionally positive experience."
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repair
Van
Gas Fireplace install
Additional Photos

+9

Response time2 days
27 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Day & Nite Plumbing & Heating, Inc.
Day & Nite Plumbing & Heating, Inc.
4.3(
225
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 1954

Emergency services offered

Warranties offered

"The guy that came out was awesome. Honest, polite, and hard working. He showed up on time, did the work, kept up informed the whole way through, and restored our confidence. We had another company out prior for the same service but the person didn't even start, rather just wanted to scare is into getting a whole new heat pump and furnace, saying it was on the brink of failure with an estimate between $12K-$20K. We said we wanted a 2nd opinion and thank goodness we did. Day and Nite acknowledged that our system was at 14-15 years, but saw no need to replace. We will call Day and Nite for our next maintenance for sure!"
Outdoor Ductless Unit
Indoor Ductless Unit
Outdoor Ductless lineset and Unit
Pump System
Response time2 days
16 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Seatown Electric Plumbing Heating & Air
Seatown Electric Plumbing Heating & Air
4.8(
1,392
)

Serving Mercer Island, WA and surrounding areas

Approved (Corporate)

In business since 2013

Emergency services offered

Warranties offered

"Seatown did mostly a good job I suppose installing a new gas burning high efficiency furnace. When the salesperson was providing their initial consultation, they pointed out that our existing thermostat would have to be replaced and the 3-wire thermostat wire would need to be upgraded to 8-wire for the high efficiency furnace. They were going to charge me some exorbitant fee to pull the new wire through 5 feet of wall. When I questioned it, they knocked it down to $500. I told them I'd buy new wire and pull it through myself before they showed up. Needless to say I was pleased to find out that the technician only used 3 of the wires anyway so that attempted overcharge would have been for nothing? Also the technician very cleverly did NOT place the new thermostat on the wall such that it covered up the old hole in the wall so I had to move it after they left. I can't say I was too happy with the furnace exhaust pipe. First, they placed the exhaust pipe above our gas meter but the inspector didn't flag it so I guess there's no issue. Also they used non-paintable caulk to seal the exhaust pipe so that painting it to blend in with the siding was a bit of a problem. They also didn't provide any sort of screen for the exhaust pipe to keep animals from crawling in it. When I questioned that they said that the carbon monoxide would kill them. So their solution is to have a dead animal in our furnace exhaust? Not to mention that doesn't really work in the summer when the furnace isn't running. Other than those rookie mistakes I noticed, I'm sure everything else was done properly?"
Generator Repair
Additional Photos
Additional Photos
Electrical Panel Repair
Additional Photos

+44

105 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for AirPros Energy, LLC
AirPros Energy, LLC
4.8(
109
)

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."
Spring AC Promo
AirPros Energy
Filter Replacement
Response time2 days
6 neighbors recently requested a quote
Recommended by97%of homeowners
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FAQs for furnace / forced air heating system install or replace projects in Mercer Island, WA

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 Mercer Island, WA 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.