Heating, Cooling, Plumbing & Electrical Services in Mercer Island, WA
over 4472 reviews
Nestled between the shimmering waters of Lake Washington and Lake Sammamish, Mercer Island is a community that values home comfort, safety, and efficiency. For residents here, dependable heating, cooling, plumbing, and electrical services aren’t just conveniences—they’re vital to maintaining the peaceful, comfortable lifestyles this scenic island offers. Since 1976, Gene Johnson Plumbing & Heating has been proud to serve Mercer Island families with honest, expert care, becoming a trusted partner dedicated to keeping homes running smoothly year-round.
A Legacy of Local Expertise and Heartfelt Service
Our story began nearly five decades ago, rooted in family values and a commitment to quality craftsmanship. We understand Mercer Island’s unique blend of older homes and modern builds, so every service we provide is tailored with local conditions and your home’s specific needs in mind. Our technicians aren’t just skilled tradespeople — they’re your neighbors. Friendly, respectful, and knowledgeable, they listen closely and explain every step so you feel confident about the solutions we recommend.
Every job is an opportunity to extend the life of your home’s critical systems. Whether tuning up your furnace before winter or swapping out fixtures for better efficiency, we take pride in doing work that lasts and truly makes a difference in your daily comfort. Transparent pricing and respectful communication make us an easy choice for Mercer Island homeowners who want trustworthy, no-nonsense service.
Complete Comfort Solutions Under One Roof
Gene Johnson Plumbing & Heating offers a full suite of services that keep your home cozy, cool, and safe in all seasons:
- Heating Services: From furnace tune-ups to heat pump installations, our team ensures your heating system runs efficiently and reliably when the cold sets in.
- Cooling Services: We handle air conditioner repairs, maintenance, and smart thermostat installations, so your home stays refreshingly cool during the occasional Pacific Northwest heatwave.
- Plumbing Services: From leak detection and drain cleaning to water heater installs and sewer line repairs, our plumbing experts keep your water flowing and fixtures performing their best.
- Electrical Services: Electrical panel upgrades, interior and exterior lighting, surge protection, and EV charging station installations — all done safely and to code.
We pride ourselves on going beyond repairs. Our technicians help spot potential issues before they grow, offering tips and service plans to protect your investment and reduce costly surprises.
0%
Or low-monthly Payments
*For 60 months on select services.
FREE
Diagnostics And Consultations On HVAC Systems
*Diagnostic or repair services are not included. This is a no-obligation consultation for homeowners interested in upgrading or replacing their HVAC and/or heating systems. Offer applies to residential properties only and must be scheduled during normal business hours.
Plumbing Services That Protect and Perform
Water problems can quickly disrupt household routines and cause costly damage. Mercer Island’s blend of aging infrastructure and modern builds needs a plumbing partner who knows how to navigate it all. From minor drip repairs to full pipe replacements, Gene Johnson Plumbing & Heating handles it promptly and professionally.
Here’s the full list of services our expert Mercer Island plumbers can assist you with:
- Leak detection
- Leak Repair
- Burst or frozen pipes
- Drain cleaning
- French drains
- Sewer hook-ups
- Sewer line inspection
- Sewer line repair
- Hydrojetting
- Water heater services (tankless included)
- Sewer replacement
- Fixture installation (faucets, toilets, sinks, you name it)
- Repiping
- Water line repair and installation
- Gas line services
- Emergency plumbing
Whether you’re dealing with aging pipes, stubborn clogs, or sudden leaks, having a skilled plumbing team makes all the difference. We help protect your home, your water lines, and your peace of mind with solutions built to last.
Heating Tailored to Mercer Island’s Climate
Mercer Island winters are damp and chilly, requiring heating systems that can deliver consistent warmth without breaking the bank. That’s why regular furnace maintenance is essential — ensuring clean burners, properly tuned components, and efficient fuel use. This care extends your system’s life and keeps energy bills manageable.
Here’s our full list of heating services in Mercer Island:
- Furnace repair
- Furnace installation
- Furnace maintenance
- Heat pump repair
- Heat pump installation
- Heat pump maintenance
- Ductless mini splits (install, repair, maintenance)
- Radiant heating
With the right heating support, your home stays comfortable no matter how damp or chilly the season gets. Our team keeps your equipment reliable, efficient, and ready for winter, giving you steady warmth and fewer surprises along the way.
Cooling with Comfort and Confidence
While our summers tend to be mild, occasional warm spells make a dependable cooling system a luxury worth investing in. We install and repair central air conditioners, helping your system run quietly and effectively.
- Air conditioning installation
- Air conditioning repair
- Air conditioning maintenance
- Heat pump services (repair, installation, and maintenance)
- Smart thermostat installation
- Ductless systems
- Indoor air quality solutions
A dependable cooling system makes warm spells easy to handle, and our experts ensure yours is always prepared. From fine-tuning to full replacements, we keep your home breezy, comfortable, and efficient whenever the temperatures rise.
Electrical Safety and Modern Convenience
Electrical systems are the backbone of modern living — powering everything in your home from everyday electronics to life-saving appliances. We help Mercer Island residents keep their systems up to date and safe with electrical panel upgrades, preventing overloads that can lead to outages or hazards.
If you’re in need of professional electrical services in Mercer Island, here’s what you can expect from our experts:
- Electrical panel upgrades
- Interior lighting
- Exterior lighting
- Whole home surge protection
- Backup generators
- EV charger installation
- Electrical troubleshooting
- Electrical installations
Safe, modern electrical systems keep your home running smoothly day and night. From upgrades to troubleshooting, our licensed electricians deliver dependable results that protect your property and support every device and system you rely on.
Why Mercer Island Chooses Gene Johnson Plumbing & Heating
What truly sets us apart is our local focus and holistic approach. We know Mercer Island homes intimately — their quirks, challenges, and history — and that makes all the difference in delivering lasting solutions.
- Responsive, friendly technicians who arrive on-time and get the job done right.
- Honest upfront pricing with no surprises, so you can budget confidently.
- Extended warranties and service plans designed to keep your systems running smoothly year-round.
- A commitment to ongoing education, empowering you to care for your home and plan wisely.
We take the stress out of home repairs and maintenance, making it easy to enjoy the comfort and convenience you deserve.
Become Part of the Gene Johnson Family
Imagine living in a home where your heating system purrs through winter’s chill, your cooling keeps summer heat at bay, plumbing flows flawlessly, and your electrical setup is safe and modern. That’s what we build for every Mercer Island customer — one visit at a time.
Join Gene’s Club to access exclusive benefits, including:
- Annual furnace tune-ups
- Discounts on HVAC repairs and equipment replacements
- Priority scheduling and waived dispatch fees
- Warranty coverage that gives you peace of mind
There’s never been a better time to partner with Mercer Island’s trusted home comfort experts. When you want service that’s thorough, reliable, and personal, call Gene Johnson Plumbing & Heating. We also serve the neighboring cities and communities, including Bellevue, Kirkland, Bothell, Lake Forest Park, Shoreline, and beyond. Let’s keep your home comfortable, safe, and efficient — just as it should be.
Ready to experience the Gene Johnson difference? Reach out today and discover why your neighbors have trusted us for nearly 50 years. Your home comfort is our priority, and we’re here whenever you need us.
QUALITY SERVICE
Within Your Budget
The best plumbing, cooling, heating, and electrical services shouldn’t have to break the bank. That’s why we are happy to provide our customers with opportunities to save on their next service with us. Our current online deals are updated periodically, so there is something for everyone, whether you are a first-time customer or a long-time loyalist.
Here are some benefits of trusting Gene Johnson with your HVAC, Plumbing, and Electrical needs.
- Best value service in Seattle
- Always on-time arrival
- No mess left after a job
- Friendly team that truly cares about your safety and comfort
- Fixed right guarantee
- Upfront pricing
- Follow up calls to ensure your peace of mind
- Range of service options- no ultimatums!
Total reviews: 4472 | Average rating: 4.8
Dennis Lussier
M Brien
Darius came out today to deal with our toilet repair issue. This company has great communication, quick response time, and although I was not expecting a repair expense at this time I felt it was a fair price for what was needed. Darius is courteous, professional and just a fantastic person. Very respectful of our place, fixed what was needed and left it clean and tidy. This is the second time I needed Gene Johnson Plumbing for our house and I highly recommend them for yours. Cheers.
Renee Morrison
Today, technician Marco Ochoa came to perform the annual water and plumbing inspection and to flush the water tank. He took pictures and provided recommendations along with estimates. Very courteous and thorough!
Jenny Breed
Pavel was so helpful trouble shooting old exterior spigots today. He explained the details to me was efficient and friendly. I appreciate the quick scheduling also!!
Megan Duncan
Armando was professional and diligent in finding the source of our plugged drain. I would highly recommend him. Thank you!!
Nick Goodman
Amazing service today. Not only did Hugo get the job (an ice maker line installation) done well, he went above and beyond cleaning and making sure everything was perfect. He also had a smile the whole time and a great sense of humor.
Martsi Stuart
Service was timely, efficient, and well communicated. Out technician, Mark Ochoa was polite, knowledgeable, friendly, and got the job done well. We consistently only call Gene Johnson for our plumbing issues and have recommended them to others including my mom.
eli huntington
Hugo fixed a leaky wax ring at my house and was very knowledgable! He helped me winterize my hose spigot and provided me info about how to close the water main for the house which i had been wondering about!
Lee Gingras
Gene Johnson is always top notch. Recently, I called them in for a second opinion after a competitor couldn’t clear our drains and told us to spend $15k to dig up the wrong part of the yard. In contrast, Mark Ochoa and Colton cleared the backup, investigated throughly to find the actual problem, walked us through videos to make we understood, and provided two options along with detailed quotes. They’re great and I’ll never cheat on them again.
Gregory Mihara
They are very efficient, hardworking and completed the job as planned. They offered 60 mo no interest finance too.
Kay LQ
Mike Pierce was extremely professional and did a wonderful job. I highly recommend him and Gene Johnson plumbing. Problem resolved!!
Robert Rochester
Sean was top notch. He made the necessary repairs. Professional and communicated everything he was doing. Highly recommend Sean and this company. Nice work.
Robert Hindman
Pavel M. is a great technician – he did a great job for us, I recommend him highly !!!
Jenny Elsey
I called Gene Johnson Services because it was an emergency and I am so glad that I found them because our emergency was fixed less than 24 hours later. Andrew was great! He went above and beyond to not only resolve our initial problem but he also wanted to make sure that our plumbing was overall functioning well.
Krystalin Williams
Excellent experience. My technician was a great comedian and helped to ease the pain of plumbing issues. I will be using this company again. My pipes under my kitchen sink look marvelous.
Mike Cheever
Jeff was awesome. Responsive, flexible and really walked me through the various issues and options. Would definitely recommend him!
Dex de Guzman
Easy and very convenient! They fixed my clogged sink for only $79. Great service
Susan Kimmel
Pavel from Gene Johnson Plumbing provided us with excellent service today: replacing old faucets and water turn off connections in 4 sinks (bathrooms and washroom), replaced rubber washer and dryer hoses to bring them up to code; performed annual maintenance on gas water heater. He worked diligently and explained everything he was doing and why he was doing it. Outstanding service.
Elizabeth Broadwell
Mark Ochoa was our tech and did an awesome job! He flushed our water heater and checked all the plumbing fixtures. Will have him back if we encounter any additional issues!
Shannyn Lee
Very friendly and knowledgeable team. Got things fixed and took great care of us.