
Get matched with top boiler installation pros in Mercer Island, WA
There are 44 highly-rated local boiler installation pros.
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Average homeowner rating4.1k+
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Verified Reviews for Boiler Installation pros in Mercer Island, WA
*The Angi rating for Boiler Installation companies in Mercer Island, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.
*The HomeAdvisor rating for Boiler Installation companies in Mercer Island, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.
Last update on October 30, 2025
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Wu Construction
Wu Construction
Wu Construction Inc, specializes in drainage and foundation systems construction and repair. Since our founding in 1983, we have successfully completed thousands of projects for homeowners and businesses throughout the Northwest. We are the best in our industry, and well regarded by our customers for our excellent service. We are lauded for our speedy responses to inquiries, our efficiency and the quality of our work.
"Great communication and thorough work. Would hire again."
Brian J on April 2025
Wu Construction Inc, specializes in drainage and foundation systems construction and repair. Since our founding in 1983, we have successfully completed thousands of projects for homeowners and businesses throughout the Northwest. We are the best in our industry, and well regarded by our customers for our excellent service. We are lauded for our speedy responses to inquiries, our efficiency and the quality of our work.
"Great communication and thorough work. Would hire again."
Brian J on April 2025

Washington Energy Services
Washington Energy Services
Washington Energy Services has been helping homeowners throughout Western Washington save money and live more comfortably since 1957. As one of the largest home improvement companies in the Seattle-Tacoma area, we are able to provide you with top-quality products and services, installed by our professional craftsmen. Our free in-home estimates ensure you get the right product for your home. We'll be with you through all aspects of your project from the purchase decision, expert installation, quality maintenance and service, and even warranty work should you need it. We assist with permits and rebates, too. Give Washington Energy Services a call today to learn more or to schedule your service.
"This review is long overdue in my praise of Washington Energy Services for their customer service, pricing and workmanship ! My first interaction was in 1999 when they installed windows throughout my house. They are still in excellent condition. I might note I called them over 20 years later to inquire on how I could repair a broken slider and they sent someone right out, charging a very nominal amount to repair it. In 2020, I needed to replace my hot water tank, and the extremely knowledgeable Christy presented several options, answering my many questions. I settled on one with a booster that seemed to best fit my needs. Finally, in December 2023, I purchased a new gas furnace from WES. I had a minor issue with a fan switch and they responded quickly to rectify the situation. Within the past two months, I seemed to be having an issue with my thermostat (something they had not installed), and the manager, Greg, came out twice with his crew to explore the problem. Today they installed a new thermostat FREE OF CHARGE! Their excellent response and customer service is beyond any company I have hired. And I particularly love that they are family owned and have been around for decades. Their employees seem to be there for the long haul, which speaks highly of the owner. I refer all my friends and family and I won't go anywhere else for services that they offer. Many thanks to the staff I have interacted with over the past 25 years!"
Joan K on March 2025
Washington Energy Services has been helping homeowners throughout Western Washington save money and live more comfortably since 1957. As one of the largest home improvement companies in the Seattle-Tacoma area, we are able to provide you with top-quality products and services, installed by our professional craftsmen. Our free in-home estimates ensure you get the right product for your home. We'll be with you through all aspects of your project from the purchase decision, expert installation, quality maintenance and service, and even warranty work should you need it. We assist with permits and rebates, too. Give Washington Energy Services a call today to learn more or to schedule your service.
"This review is long overdue in my praise of Washington Energy Services for their customer service, pricing and workmanship ! My first interaction was in 1999 when they installed windows throughout my house. They are still in excellent condition. I might note I called them over 20 years later to inquire on how I could repair a broken slider and they sent someone right out, charging a very nominal amount to repair it. In 2020, I needed to replace my hot water tank, and the extremely knowledgeable Christy presented several options, answering my many questions. I settled on one with a booster that seemed to best fit my needs. Finally, in December 2023, I purchased a new gas furnace from WES. I had a minor issue with a fan switch and they responded quickly to rectify the situation. Within the past two months, I seemed to be having an issue with my thermostat (something they had not installed), and the manager, Greg, came out twice with his crew to explore the problem. Today they installed a new thermostat FREE OF CHARGE! Their excellent response and customer service is beyond any company I have hired. And I particularly love that they are family owned and have been around for decades. Their employees seem to be there for the long haul, which speaks highly of the owner. I refer all my friends and family and I won't go anywhere else for services that they offer. Many thanks to the staff I have interacted with over the past 25 years!"
Joan K on March 2025

Seatown Electric Plumbing Heating & Air
Seatown Electric Plumbing Heating & Air
As a provider of essential services here in the Puget Sound Region, Seatown Electric Plumbing Heating & Air remains open to serve you. To ensure the safety of our customers our technicians' health is monitored closely and we are following the highest safety recommendations, including the use of masks and protective gloves. The health and wellness of our customers and employees will always come first. We are here for you! Seatown provides Electrical, Plumbing, Heating, and A/C services in the Greater Puget Sound region, concentrating in King and Snohomish county. With our customer satisfaction guarantee, you can rest assured that your system will outlast industry standards, providing safety, and comfort for your home, for many years to come. You will never have to search for a new electrical, plumbing or heating and air contractor again. That is our promise. Seatown continues to lead Angie's List, with overall "A" reviews, by serving one customer at a time and giving top-notch service. We hope to build long-lasting customer relationships, throughout Washington State. Our world-class technicians will show up to your door in clean uniforms, with visible ID and state certification, trained to over-exceed your expectations, and never leaving a mess behind. We are Seatown Electric Plumbing Heating And Air, Washington's all in one contractor.
"The employee called me a sandn*gger. Do not hire these ppl."
Matt R on October 2025
As a provider of essential services here in the Puget Sound Region, Seatown Electric Plumbing Heating & Air remains open to serve you. To ensure the safety of our customers our technicians' health is monitored closely and we are following the highest safety recommendations, including the use of masks and protective gloves. The health and wellness of our customers and employees will always come first. We are here for you! Seatown provides Electrical, Plumbing, Heating, and A/C services in the Greater Puget Sound region, concentrating in King and Snohomish county. With our customer satisfaction guarantee, you can rest assured that your system will outlast industry standards, providing safety, and comfort for your home, for many years to come. You will never have to search for a new electrical, plumbing or heating and air contractor again. That is our promise. Seatown continues to lead Angie's List, with overall "A" reviews, by serving one customer at a time and giving top-notch service. We hope to build long-lasting customer relationships, throughout Washington State. Our world-class technicians will show up to your door in clean uniforms, with visible ID and state certification, trained to over-exceed your expectations, and never leaving a mess behind. We are Seatown Electric Plumbing Heating And Air, Washington's all in one contractor.
"The employee called me a sandn*gger. Do not hire these ppl."
Matt R on October 2025

State Plumbing Utilities LLC
State Plumbing Utilities LLC
We specialize in plumbing services, repairs, inspections, installations, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!
"The job went very well. John and his assistant completed the replacement the next day and only took an hour from start to finish. The cost was much less than other estimates. Be sure you get an estimate from this company if you need plumbing work."
Dale R on January 2025
We specialize in plumbing services, repairs, inspections, installations, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!
"The job went very well. John and his assistant completed the replacement the next day and only took an hour from start to finish. The cost was much less than other estimates. Be sure you get an estimate from this company if you need plumbing work."
Dale R on January 2025

Hunt's Services
Hunt's Services
Puget Sound's Home Service Heroes! Offering Plumbing, HVAC, Electrical, Duct & Sewer Services Hunt’s Services is a certified and licensed plumbing, heating, cooling, electrical, duct and sewer services company. We offer same day repairs and emergency services, with over 2,600 five-star reviews by our customers in Tacoma, Federal Way, Auburn, Puyallup, South Hill, Kent, Bellevue, Redmond, Seattle, Olympia and the nearby areas. We take pride in serving King, Pierce and parts of Kitsap and Thurston Counties for both residential and commercial needs with honesty, integrity, and dedicated service.
"had a deeply frustrating experience with Hunt’s HVAC Services that reflects a serious lack of professionalism and customer care. They contacted me early last week to schedule service for my HVAC system, and I agreed to their preferred date—the following Monday. I received a confirmation email on Sunday and a reminder Monday morning for the upcoming afternoon appointment. I drove 1.5 hours to the service site, only to be met with confusion and poor communication. When I called at 12:30 to ask for a specific arrival time, I was told the technician would contact me 30 minutes before arriving—but they couldn’t give me a time estimate. I waited another 2.5 hours before receiving a call informing me that no technician would be coming at all. My only options were to reschedule or cancel. I asked to speak with a manager and was placed on long hold. Eventually, I was told the manager was “too busy” to speak with me and would call me later. That call never came. This experience was a complete waste of time and resources, and the lack of accountability was appalling. Hunt’s HVAC Services failed to honor their commitment, communicate effectively, or show basic courtesy. I strongly advise others to stay away from this business."
Faris A on October 2025
Puget Sound's Home Service Heroes! Offering Plumbing, HVAC, Electrical, Duct & Sewer Services Hunt’s Services is a certified and licensed plumbing, heating, cooling, electrical, duct and sewer services company. We offer same day repairs and emergency services, with over 2,600 five-star reviews by our customers in Tacoma, Federal Way, Auburn, Puyallup, South Hill, Kent, Bellevue, Redmond, Seattle, Olympia and the nearby areas. We take pride in serving King, Pierce and parts of Kitsap and Thurston Counties for both residential and commercial needs with honesty, integrity, and dedicated service.
"had a deeply frustrating experience with Hunt’s HVAC Services that reflects a serious lack of professionalism and customer care. They contacted me early last week to schedule service for my HVAC system, and I agreed to their preferred date—the following Monday. I received a confirmation email on Sunday and a reminder Monday morning for the upcoming afternoon appointment. I drove 1.5 hours to the service site, only to be met with confusion and poor communication. When I called at 12:30 to ask for a specific arrival time, I was told the technician would contact me 30 minutes before arriving—but they couldn’t give me a time estimate. I waited another 2.5 hours before receiving a call informing me that no technician would be coming at all. My only options were to reschedule or cancel. I asked to speak with a manager and was placed on long hold. Eventually, I was told the manager was “too busy” to speak with me and would call me later. That call never came. This experience was a complete waste of time and resources, and the lack of accountability was appalling. Hunt’s HVAC Services failed to honor their commitment, communicate effectively, or show basic courtesy. I strongly advise others to stay away from this business."
Faris A on October 2025

Brennan Heating & Air Conditioning
Brennan Heating & Air Conditioning
Since 1987, Brennan Heating and Air Conditioning has served thousands of customers throughout the Puget Sound. We offer a variety of home comfort products including furnaces, air conditioners, heat pumps, hydronic heating systems, active air purifiers, and gas water heaters. We have even expanded to offer standalone electrical services in addition to heating and cooling repair and maintenance. Brennan Heating - Comfort You Can Count On.
"Brennan performed annual checkups on furnace and air conditioner. They charged $336. While here, they said that the capacitor for the blower motor needed to be replaced. They charged $165, which was way too much. I checked later and found the part for about $12. It took five minutes. to install. I’ll hire another company next time. "
Rob L on October 2025
Since 1987, Brennan Heating and Air Conditioning has served thousands of customers throughout the Puget Sound. We offer a variety of home comfort products including furnaces, air conditioners, heat pumps, hydronic heating systems, active air purifiers, and gas water heaters. We have even expanded to offer standalone electrical services in addition to heating and cooling repair and maintenance. Brennan Heating - Comfort You Can Count On.
"Brennan performed annual checkups on furnace and air conditioner. They charged $336. While here, they said that the capacitor for the blower motor needed to be replaced. They charged $165, which was way too much. I checked later and found the part for about $12. It took five minutes. to install. I’ll hire another company next time. "
Rob L on October 2025

Elite Plumbing Services LLC
Elite Plumbing Services LLC
small independent business. same day service , repairs, inspections, and installations on water, sewer, or gas. 23 years plumbing experience on every call I allways guarantee your satisfaction, and I donr leave until the job is done right. I pride myself providing quality work and customer service. so try Try elite plumbing Services and meet your go-to plumber today!
"Cesar did an amazing job. He was upfront, honest, very affordable and did a great job. Very happy and would recommend!"
Cheryl T on June 2025
small independent business. same day service , repairs, inspections, and installations on water, sewer, or gas. 23 years plumbing experience on every call I allways guarantee your satisfaction, and I donr leave until the job is done right. I pride myself providing quality work and customer service. so try Try elite plumbing Services and meet your go-to plumber today!
"Cesar did an amazing job. He was upfront, honest, very affordable and did a great job. Very happy and would recommend!"
Cheryl T on June 2025

Drain Pro Plumbing Inc
Drain Pro Plumbing Inc
We will beat any estimate by 5%. $65 off First time customer call. We offer 24/7 emergency plumbing services with a guarantee for our technicians as well as the materials we use. Drain Pro is delighted to be of use to its clients and enjoy the fact that we can be of help to our clients, many of whom call us in great distress.You can directly speak to a plumber when calling so that the problem can be understood right away and handled accordingly. We offer free estimates and second opinions. Drain Pro uses the latest equipment in the industry and our highly trained technicians have passed a background check. We are very time efficient, respectful of our clients and their homes and always work on schedule. Prices are given up front with no hidden charges. We offer senior discounts, military discount , with valid ID's.
"They came within a day and converted by old 3 knob setup to a more modern 1 knob setup which required cutting and reconfiguring pipes. The whole job was done in a half day and the shower/bath was repaired. Very nice plumber and front office team as well."
Thomasq P on June 2022
We will beat any estimate by 5%. $65 off First time customer call. We offer 24/7 emergency plumbing services with a guarantee for our technicians as well as the materials we use. Drain Pro is delighted to be of use to its clients and enjoy the fact that we can be of help to our clients, many of whom call us in great distress.You can directly speak to a plumber when calling so that the problem can be understood right away and handled accordingly. We offer free estimates and second opinions. Drain Pro uses the latest equipment in the industry and our highly trained technicians have passed a background check. We are very time efficient, respectful of our clients and their homes and always work on schedule. Prices are given up front with no hidden charges. We offer senior discounts, military discount , with valid ID's.
"They came within a day and converted by old 3 knob setup to a more modern 1 knob setup which required cutting and reconfiguring pipes. The whole job was done in a half day and the shower/bath was repaired. Very nice plumber and front office team as well."
Thomasq P on June 2022

Red Cedar Plumbing & Drain Cleaning
Red Cedar Plumbing & Drain Cleaning
At Red Cedar Plumbing we specialize in quick service for those that need high quality repairs at affordable rates. No job is too big or small for us but a couple of our specialties include repairs, replacements, or new installs for:Faucets Fixtures and Pipes Water Heater Water Main Drain Clog or Blockage Tankless Water Heater Bathtub Installs and ReplaycementsTankless Water Heater Plumbing for Home Additions or RemodelsDrain Clogs Shower Installation or Replacements plumbing and drain cleaning .
"Red Cedar Plumbing helped us with a clogged toilet emergency just before we hosted our big family gathering for Thanksgiving. I called them in the morning and they installed a new toilet for us that afternoon. Their employees were friendly and professional and the price was quite reasonable. I highly recommend them."
Richard E on November 2024
At Red Cedar Plumbing we specialize in quick service for those that need high quality repairs at affordable rates. No job is too big or small for us but a couple of our specialties include repairs, replacements, or new installs for:Faucets Fixtures and Pipes Water Heater Water Main Drain Clog or Blockage Tankless Water Heater Bathtub Installs and ReplaycementsTankless Water Heater Plumbing for Home Additions or RemodelsDrain Clogs Shower Installation or Replacements plumbing and drain cleaning .
"Red Cedar Plumbing helped us with a clogged toilet emergency just before we hosted our big family gathering for Thanksgiving. I called them in the morning and they installed a new toilet for us that afternoon. Their employees were friendly and professional and the price was quite reasonable. I highly recommend them."
Richard E on November 2024
Day & Nite Plumbing & Heating, Inc.
Day & Nite Plumbing & Heating, Inc.
Your local Family owned & operated Plumbing, Heating, and Cooling Company since 1954. OUR MISSION: "Dedicated to providing the highest quality, most professional services for your home and business with unsurpassed Value, Innovation, and Integrity." As a Factory Authorized Bryant Dealer, we are proud to offer the latest in innovation and technology when it comes to to comfort in your home. Not only do we work on all brands of Furnaces, A/C, Heat Pumps, & Boilers we also can design the best solution for your home and family when it comes time to replace your equipment. Our Plumbing division is just as innovative. From simple repairs to complete repipes. We also offer the latest in technology when it comes to designing the best solution for the needs of your home. With weekly training weather its a repair, drain cleaning, tankless water heater or replacing a water line without digging a trench our technicians are prepared to offer the right solution. Check us out at the Better Business Bureau and visit our website at www.dayandnite.net.
"Very expensive and overprice, just to change an Outdoor Garden Faucet that cost $32 at Home Depot, I paid $694.99, this is what you call HIGHWAY ROBBERY."
Bert C on June 2025
Your local Family owned & operated Plumbing, Heating, and Cooling Company since 1954. OUR MISSION: "Dedicated to providing the highest quality, most professional services for your home and business with unsurpassed Value, Innovation, and Integrity." As a Factory Authorized Bryant Dealer, we are proud to offer the latest in innovation and technology when it comes to to comfort in your home. Not only do we work on all brands of Furnaces, A/C, Heat Pumps, & Boilers we also can design the best solution for your home and family when it comes time to replace your equipment. Our Plumbing division is just as innovative. From simple repairs to complete repipes. We also offer the latest in technology when it comes to designing the best solution for the needs of your home. With weekly training weather its a repair, drain cleaning, tankless water heater or replacing a water line without digging a trench our technicians are prepared to offer the right solution. Check us out at the Better Business Bureau and visit our website at www.dayandnite.net.
"Very expensive and overprice, just to change an Outdoor Garden Faucet that cost $32 at Home Depot, I paid $694.99, this is what you call HIGHWAY ROBBERY."
Bert C on June 2025
The Mercer Island, WA homeowners’ guide to boiler installation services
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Wondering how much a water heater expansion tank costs? Use this cost guide to get an accurate estimate and learn how to choose the right one for your home.

Are you having a lot of water heater problems? Our guide highlights the most common issues and how to solve them.

Are you not sure who fixes hot water heaters? Find out who does this kind of work and who to call to get your hot water back on tap.

Are you ready to replace your home's water heater? Learn how to replace a gas water heater and whether it's best to DIY or call a pro.
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