Heating, Cooling, Plumbing & Electrical Services in Mercer Island, WA
over 3,900 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.
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.
Heat pumps are increasingly popular here, thanks to their ability to both heat and cool efficiently. Gene Johnson’s experts install and service heat pumps to keep your home comfortable year-round. For homes lacking ductwork, we offer ductless mini-split systems that provide zoned comfort — so every room feels just right, without the expense of major renovations.
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.
Beyond cool air, we focus on indoor air quality too. Our in-duct air purifiers catch allergens and contaminants, improving your home’s atmosphere during all seasons. Pair that with our smart thermostat upgrades, and Mercer Island homeowners gain precise control to balance comfort with energy savings.
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.
Routine drain cleaning prevents clogs that lead to backups or worse. Our water heater services cover both traditional and tankless systems — ensuring you never have to worry about your morning shower or washing machine again. Fixture upgrades, leak detection, and repiping round out our plumbing expertise, always with attention to detail and respect for your home.
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.
Lighting installations—both indoors and outdoors—combine function with style, creating inviting spaces. As EV adoption grows, we’re here to offer safe, convenient home charging station installations tailored to your needs.
Don’t underestimate the importance of whole-home surge protection — sudden voltage spikes can fry electronics or shorten their lifespan. Our experts install surge protectors that shield your tech investments and give you peace of mind.
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. 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: 566 |
Average rating: 4.7
Amir
Kimberly Burt
Steven did a fabulous job thank you!
Kendra Anderson
David is absolutely fantastic! From the moment he arrived—following a water heater explosion that left us with four inches of flooding—he was professional, calm, and approachable. He took the time to walk us through every step of the process, ensuring we felt informed and confident in our options and next steps. His customer service is unmatched, and I’m incredibly grateful for his expertise, craftsmanship, and kindness.
Victor Pineda
Steven was very clear in explaining what the work entails and how much it will cost.
Stu Melton
Trae Morrison was extremely helpful fixing my garbage disposal. He patiently explained how he fixed the issue and advised me on how to avoid issues in the future. He was very patient and professional – I highly recommend him.
Ali Esmaeillou
Steven was in our house doing some major plumbing work. He did great or I should say excellent job.
Curtis Ward
Chase was amazing! Did excellent job and was very polite.
Laney Mogg
Steven Fritz was awesome!!
Don Leland
Steven Fritz was great! Fast, efficient and friendly…was able to diagnose our issue and resolve it. Highly recommended.
Shane Zabel
Derek Solberg showed up quickly and got right to work, figuring out my leak and how to fix it. He stayed late to get the job done and was kind and positive.
We went from, “Holy cow, our waterline blew, and our well turned our crawlspace and basement into a pond.” To “our water is back on, and we are good to go with updated piping.”
Thank you, Derek!
Karen Hertzog
I have used Gene Johnson Plumbing quite a few times over the years and especially at my business location. They have always been quick to respond, quick to get it scheduled and very friendly and helpful in all my interactions with them. I will never call anybody else for my plumbing needs
Kevin Lyons
Had a great experience with this company. David came in and fixed my water heater issue in a timely manner and was also super professional. Would highly recommend.
Connie Manning
Very professional job. Jose was personable and caring. Him and his assistant got the job done quickly but with quality work.
Karl Myers
Chase Bolen was great: knowledgible, effective an personable in my bathroom plumbing project.
Sharon Eddy
Noah was great, finding all the problems in my plumbing.
Mary Ann McGinley
I called on Friday afternoon, scheduled the visit, they came and did the replacement of the pressure valve, cleaned up and was out the door before 5PM. WOW! Saved me from a weekend without water pressure! Thank you and bless you GJP.
Donna Houston
Derrick was very helpful to me. He was very professional and knew exactly what I needed. He checked everything and explained everything as well. He even had the equipment and repaired a pipe that looked like it was going to burst shortly. I really appreciate him and his relaxed manner.
Gabe
Chad did a great job retrofitting a utility sink hookup for our garage. Cost were clear upfront and I got an appointment within a few days.
Jim BULGER
I am very pleased with the assistance Tyler has given me in detecting an outside water leak. He was prompt to respond and diligent in trying to determine the issue. I’m looking forward to locate the actual leak and his fix.
Jay Stockbridge
Chase Bolen replaced our hot water tank yesterday. He and apprentice arrived on time and carried out the task quickly and efficiently. He explained clearly how the leak sensor, alarm, and automatic shut-off worked as well as how to change the water temperature if desired. I have no hesitation about recommending their work.