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

Avatar for Greenwood Heating and Home Services
Greenwood Heating and Home Services
4.6(
425
)
Gas Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - InstallDucts & Vents - Install or Replace+43 more

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 rate100%
14 neighbors recently requested a quote
Avatar for Action Heating & Air Conditioning
Action Heating & Air Conditioning
4.9(
224
)
Electric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - RepairHeat Pump - Repair or Service

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 Airpros Energy
Airpros Energy
4.7(
89
)
Heat Pump - Install or ReplaceBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+19 more

Serving Mercer Island, WA and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"Great job doing maintenance service on the furnace and heat pump. Received informative answers to my questions. Very professional interaction. Been doing business with AirPros Energy for over 10 years servicing my furnace, heat pump, gas fireplace, tankless water system and have always been satisfied."
Comfort Built for the PNW
3 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Product Air Heating & Cooling, LLC
Product Air Heating & Cooling, LLC
4.8(
299
)
Gas Furnace / Forced Air Heating System - InstallHeat Pump - Install or ReplaceGas Furnace / Forced Air Heating System - Repair+4 more

Serving Mercer Island, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"Eli came out and temporarily fixed my very aging furnace and A/C unit, and explained what he did clearly. I shortly hired the company to replace my old units and put in a heat pump system. Robert and his crew came to do the installation and were superb. This family-owned company will not up-sell you services and will help you problem-solve your needs. Highly recommend!"
Installed new system
Finished product
During installation
Of system
Finished project

+11

Response time2 days
Response rate89%
84 neighbors recently requested a quote
Avatar for BASSETT HOME HEATING INC.
BASSETT HOME HEATING INC.
4.5(
67
)
Ducts & Vents - Install or ReplaceElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+3 more

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!"
Additional Photos
Response time2 days
7 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Evergreen Home Heating & Energy
Evergreen Home Heating & Energy
4.4(
105
)
Electric Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+43 more

Serving Mercer Island, WA and surrounding areas

Approved

In business since 1975

Free estimates

Emergency services offered

"Great. I wanted to replace my oil furnace with a system that does both heating and cooling. They came by, did measurements, and presented some options. I chose the Mitsubishi mini split system because I have a large house and don't need to heat or cool all of it all the time. They installed in a day. Very easy, very boring, I also had them replace the water heater."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

Response time5 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for Day & Nite Plumbing & Heating, Inc.
Day & Nite Plumbing & Heating, Inc.
4.3(
225
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+43 more

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!"
Outdoor Ductless Unit
Indoor Ductless Unit
Outdoor Ductless lineset and Unit
Pump System
3 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for SeaTown Electric Heating and Air
SeaTown Electric Heating and Air
4.7(
1,638
)
Electric Furnace / Forced Air Heating System - InstallHeat Pump - Install or ReplaceGas Furnace / Forced Air Heating System - Install+4 more

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"In the beginning the 4 nations of Electric, Plumbing, Heating, and Air lived in harmony. Because Seatown maintained the balance. We have used Seatown for 15 projects now for spanning all their services. When we bought our old home, we had Seatown and other competitors provide quotes on installing HVAC. Their planning, thoughtfulness to our needs, price is why we chose them. As the summer heat spikes, we don’t regret our choice and are glad that our home is an oasis. Every time they come out, we ask for more things to be done than what was agreed to and every time they work to extra hard to get it all done. They go the extra mile in doing some simple projects for free and giving advice on how to lower our costs as new homeowners. I have been able to call or text them about issues or ideas and get advice with out the pressure to buy services. That’s not something you find in just any company. Their staff has always been polite, clean, and diligent about getting the job right the first time. As we continue to fix up our old house, we will be using Seatown for projects large and small and we hope you will as well."
Seattle's Rewire Specialists
Generator
Tesla Chargers
Knob and Tube Removal
Ductless Install

+26

Response time1 day
12 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Smart Electric, Heating & Air
Smart Electric, Heating & Air
4.9(
79
)
Gas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - InstallDuctless Mini-split Heating System - Install or Replace+10 more

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"Smart Electric was pretty good to work with. We were especially pleased with the technician, Gram, who was kind, communicative, and thorough with his work. He came back multiple times for final touches and adjustments after the inspection report. In general, there were a couple of communication gaps with the company when initiating the project and day 1 of work, but it got settled by the end. We are pleased with our new heat pump and furnace."
17 neighbors recently requested a quote
Recommended by80%of homeowners
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Showing 1-10 of 322

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.