Heating, Cooling, Plumbing & Electrical Services in Mercer Island, WA
over 4690 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.
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, all the way to West Seattle, 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: 4690 | Average rating: 4.8
Eric Steep
Tiffany Stonebraker
Edgar was communicative, patient and very knowledgeable. Highly recommend!
Eldon Wright
Mark was the man and helped us out with a tricky blockage in our kitchen. Much appreciated!
Tess Wilson
Chandler did the best at installing our whole house water shutoff valve. He arrived promptly and did a great job – he kept the work area clean. He was so professional and kind. Thank you Chandler!!!
Stacy Buck
Austin did an awesome job on my gas water heater replacement! He also replaced my main water valve shut off. His work was top notch. Austin explained what he would be doing and went over his work when he was done. He cleaned up the area once his work was completed – just beautiful! I would highly recommend Austin and Gene Johnson for your plumbing needs!
Thanks Austin – appreciate your hard work!!
Heidi Tsukada
Gene Johnson Plumbing is fabulous! We called regarding mysterious noises in our pipes and they were able to send someone out the same day. Jaren was outstanding! He patiently listened to our descriptions, checked several possible causes, provided us with a few options, and ultimately fixed the problem. He was clearly experienced, communicated clearly, and was unfailingly polite. We are so happy with Jaren and Gene Johnson Plumbing!
Jimmie Davis
Tara’s replaced my hot water heater and I must say, his work is exceptional. He walked me through the process and was very knowledgeable of the work. I would recommend Tara’s to anyone. Very nice and very enjoyable to talk to.
Joe Chitty
The plumber was on time and very knowledgeable. He assessed the problem and did the job, which was quite complicated, and was very tidy.
John Taylor
Gene Johnson plumbing was great. Marco came by and and fixed my problem quickly and professionally. I had some questions around my mainline functionality, that were not mentioned in my original request. He helped me right away and I was able to get valuable information on that front as well.
Lexx Sanford
Met with Derek Solberg. Knew his stuff. Very satisfied. Would recommend
Hanny Kamal
Colby was extremely helpful, honest, and communicative throughout the process of repairing our cracked toilet. He went above and beyond to make sure everything was done with care. Thank you so much!
Marianne
Tyler was fantastic! We came home to find our hot water tank had leaked all over the downstairs of our home. Tyler arrived first thing in the morning to diagnose the problem and then replace the tank. Thank you for a great and speedy job!!
Carol Zuvela
Mark Ochoa was very efficient. I thought he did a great job explaining everything he was doing. You have an efficient and professional employee.
Alexander Augustyn
Armando Caballero-Cano came to work with a stopped up drain for my client – same day service. He was courteous and clean and explained tips and tricks for them to keep their drains healthy. Thank you Armando!
Maggie Stiffler
I went 2 days without hot water. He came and before he left I had hot water again. My other unit was trash.
PJ
Had a sudden plumbing problem and Mike K. was able to get there in less than 2 hours and get the problem fixed fast. Thanks!
Andy M
Very happy with our water heater maintenance check today by Gene Johnson Plumbing. Our technician Branson did a thorough job, was friendly, and did a great job communicating what had been done and any items of note while completing the task at hand.
Jennifer wellman
Mark Ochoa Was extremely professional. He took the time to explain everything extremely well. I would definitely recommend them. Fast and courteous.
Paolo Cruz
Mike K. is very knowledgeable and professional. I appreciated his honesty and would recommend Gene Johnson Plumbing.
randall williams
Called to get leaky water tank replaced. The team sent Jeff over and performed way above any expectation… He is a great tech but mostly a wonderful human being. He was clear and complete in his communications. Helpful and thoughtful the whole way through. Great guy! His knowledge and professionalism shines in what he does, and does well. I have his card and will not ever hesitate to reach out, for anything that may come up in the future. Jeff leads in representing what I like to call “old school” approach to customer service and managing any task or service he provides, from simple to complex. You got a winner there, for sure!