Heating, Cooling, Plumbing & Electrical Services in Mercer Island, WA
over 4543 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: 4543 | Average rating: 4.8
Karen B. Shea
Jay Kloby
Mike Pierce was my technician and he was very helpful, knowledgeable and capable. He addressed my concern and gave me useful information for the future. I would definitely recommend him and like to have him do my plumbing work in the future.
John Murphy
The technician came out on Xmas Eve to repair our hot water heater. He was friendly and professional. Highly recommend this company.
Edgar Garcia
Gene Johnson is a great company, not only for their great prices but for their wonderful customer service! Our toilet was backed for almost a week while my wife and I tried to look for reasonable price but we settled on Gene Johnson. The plumber that came out to fix our issue, Armando, really brightened our day and did a fantastic job 💪! Thank you Armando and thank you Gene Johnson !
David Lim
Branson Carr came out to install a new water heater. He did a phenomenal job. Really worked hard to restore hot water to the residence. He was professional and worked extremely hard. Would recommend.
Matt Kane
Jaren Larson helped unclog a sink that was extremely difficult and we greatly appreciated his professionalism. He was transparent about pricing and the next steps if he was unable to get the sink flowing again. 100% would recommend him. Appreciate you Jaren!
Joan Archer
Did a good job on trouble shooting our thankless water heater thank you.
Janeen Sanders
Branson Carr was extremely knowledgeable and helpful during the service call for my hot water heater. He got it back up and running and gave us some great advice for maintenance going forward. We are extremely pleased.
Anna K. Anderson
Mike was helpful with explanations and advice on top of the job well done. We are grateful to have benefited from his experience and expertise.
MARIE PARAGAS
Mike was awesome super friendly gave great advice and got the job done quickly. Thank you Mike and Gene Johnson for taking care of us
Matt Klainer
Jaren was great. We called this AM, arrived this afternoon, on time, fixed 3 issues. Was great to work with, would definitely recommend.
Jon Andrew Franklin
Jaren showed up and saved the day. Kind, informative, and quick. 11/10
Carmen Kallis
Gene Johnson has done plumbing work for us in the past so we called them to come out and address what we thought was a smelly drain. Mark O. came yesterday and worked so hard to find the cause of the funky odor. He went above and beyond, exhausting all efforts, explaining everything to me along the way. In the end, nothing was found that would indicate there was an issue with our plumbing. Mark provided a few options without making me feel pressured to make an immediate decision. He was apologetic about not being able to find and fix the issue, but he really did make every effort and I was at least glad to know that our plumbing seems to be in good shape. Thank you, Mark!
Michael Cook
Jaren did an awesome job. Fixed my issue efficiently and to my satisfaction. Highly recommend Jaren and Gene Johnson Plumbing.
Joe Clark
Mark Ochoa was amazing dealing with a complicated issue in my basement bathroom and got us back in business. It was not a fun job. Really appreciate you Mark!
Lynne Dixon
I had an emergency water heater leak and called for help. Joe came out and got the old water heater removed and new one installed. He was very helpful and informative, I appreciate him getting this resolved so quickly. I’ll definitely use Gene Johnson again!
Janet englund
We had a new installation of a tankless hot water heater by Steven Fritz today and it was an amazingly painless and actually interesting procedure! He was very thorough and explained things fully and carefully and got the job done in a single day. Really impressive!
Catherine Hawley
We discovered very early in the morning that our hot water tank was leaking. I called Gene Johnson plumbing. The scheduler was efficient and thorough. About 15 minutes after I ended that call I received one from Pavel along with an email that he was on his way. He assessed the situation and got right to work. We now have a very functional new hot water heater, thanks to Pavel and Nathan. They were very knowledgeable and professional. Would happily recommend their services to friends and family.
Leah Grimshaw
Jaren came out today to fix our bathtub, which was significantly clogged. This was my first-ever experience calling a plumber, and it was terrific from start to finish. The person I spoke with to book was friendly and efficient. They were able to get me in the same day, and I appreciated receiving a text letting us know when the plumber would arrive, along with a picture of who would be coming. I also appreciated Jaren calling us to let us know he was going to be early and to check with us if that was okay. Jaren was kind, patient, and knowledgeable. He did a fantastic job all around. He had excellent communication with us and our HOA, and this was the best experience I’ve ever had with someone coming into my home for repairs. I am so happy my bathtub is back to normal, and I will recommend Gene Johnson to any of my friends and family. Jaren honestly made a nightmare situation manageable and even pleasant! Thank you again so much!
james tucker
Your company has been here before! Great people! Great service ! Waiting for you guys now 👍