Air Conditioning Services in Mercer Island, WA
over 3,900 reviews
Stay Cool Summer-Long With Gene Johnson’s Top-Tier Air Conditioning Services!
Tucked between the hustle of Seattle and the calm of Bellevue, Mercer Island is a unique place to call home. Lush neighborhoods, sweeping water views, and peaceful tree-lined streets create a tranquil escape—until the temperature starts to rise. When the Pacific Northwest sun kicks into gear, that stillness can quickly feel stifling without a working air conditioner.
If you’re a homeowner or business in Mercer Island, WA looking for reliable, honest, and efficient air conditioning services, you’re not alone. For nearly five decades, families and businesses across King County have trusted Gene Johnson Heating, Cooling, Plumbing & Electrical to keep their indoor spaces cool, comfortable, and efficient — no matter what the weather does outside.
We’re more than a company that installs and fixes AC units. We’re part of your community, and we bring our expertise to every home with care, integrity, and a true understanding of local needs.
Cooling That’s Designed for Mercer Island Living
Mercer Island may enjoy moderate weather much of the year, but summer heatwaves can arrive fast and linger longer than expected. Homes with large windows, waterfront exposure, or older insulation can heat up quickly. Likewise, modern homes with open floor plans and smart systems require equally intelligent cooling strategies.
That’s where our team shines. We deliver tailored AC services that match not just the specs of your property, but how you live in it. Whether you’re raising a family in a cozy rambler or managing a tech office near the business district, we’ll help you find the right balance of comfort, efficiency, and reliability.
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.
Your Full-Service Partner for AC Services in Mercer Island, WA
Every home and building has different cooling needs. That’s why we offer a complete range of air conditioning services — from fast AC repairs to brand-new installations and energy-saving maintenance plans.
Fast and Thorough Air Conditioning Repair
Is your AC blowing warm air? Making strange noises? Shutting off before the room cools down?
We’ve seen it all. And more importantly, we’ve fixed it all. Our technicians are trained to handle a wide variety of air conditioning repair situations with precision and care. No shortcuts, no guesswork — just smart troubleshooting backed by decades of experience.
We respond quickly because we know how disruptive AC problems can be. Our trucks are stocked with the parts most systems need, which means we can often complete your repair on the same visit.
Typical issues we address include:
- Low refrigerant or leaks
- Frozen evaporator coils
- Malfunctioning thermostats
- Tripped breakers or blown capacitors
- Clogged drain lines
- Fan motor or compressor issues
We explain everything we find in clear terms, and we’ll never pressure you into unnecessary work. Your comfort, safety, and trust mean more to us than a quick sale.
Professional Air Conditioning Installation & Replacement
Sometimes, the best fix is a fresh start. If your system is older than 12-15 years, frequently breaks down, or can’t keep up with current demands, it may be time for an air conditioning replacement.
Installing a new system isn’t just about picking a unit off a shelf. It’s about engineering a solution that works for your specific space and lifestyle. Our air conditioning installation process begins with an in-depth home evaluation — we look at your layout, sun exposure, insulation quality, and even how your household uses different rooms.
From there, we recommend high-performance systems that balance cooling power with efficiency. We install top-rated brands and ENERGY STAR® systems that are whisper-quiet, user-friendly, and built to last.
Benefits of modern AC installation & replacement include:
- Lower energy bills
- More consistent cooling in every room
- Smart-home compatibility
- Quieter operation
- Improved indoor air quality
Our team handles everything from permitting to clean-up, and we stay available long after the job is done.
Preventative AC Maintenance That Pays Off
One of the best ways to protect your investment — and your comfort — is with regular air conditioning maintenance & tune-ups. Think of it as a wellness visit for your cooling system: small adjustments now that prevent bigger headaches later.
Our AC maintenance services are meticulous and comprehensive. We check every wire, filter, and moving part to make sure your unit is clean, safe, and operating at peak efficiency.
An annual tune-up typically includes:
- Cleaning condenser coils and drain lines
- Checking refrigerant levels
- Testing system pressure
- Inspecting electrical connections
- Calibrating the thermostat
- Replacing air filters
- Lubricating motors and fans
Customers who stay on top of AC maintenance enjoy fewer breakdowns, longer system lifespans, and better cooling all summer long.
Ductless Mini-Splits: Cool Where You Need It
Not all homes are built with central ductwork. And not every room needs the same level of cooling. That’s where ductless mini-splits shine.
Ideal for additions, guest rooms, studios, or any space without ducts, mini-splits provide zoned cooling with amazing efficiency. These systems allow you to cool only the rooms you’re using, saving money while increasing comfort.
Gene Johnson installs, services, and replaces all types of ductless systems. Whether you’re upgrading from a window unit or seeking a quieter, more targeted cooling solution, we can help you select the right mini-split for your home.
Already have one? We also offer full ductless mini-split repairs to keep your system running smoothly year after year.
Heat Pumps: Year-Round Comfort for the PNW
If you’re interested in combining heating & cooling into one sleek system, heat pumps may be the perfect fit. Especially popular in Mercer Island’s moderate climate, heat pumps work efficiently year-round, keeping you warm in the winter and cool in the summer.
Our heat pump services cover everything from installation and system design to diagnostics and seasonal maintenance. We’ll help you understand how heat pumps compare to traditional HVAC options and whether your home is a good candidate for conversion.
As energy prices rise and sustainability becomes more important, heat pumps are quickly becoming one of the smartest upgrades you can make.
Emergency AC Repairs When You Need Them Most
Life on Mercer Island is peaceful — until the air conditioning quits during a holiday barbecue or a July weekend. Fortunately, Gene Johnson provides responsive emergency AC repair for urgent situations.
Whether you wake up sweating or return from vacation to a stifling home, we’ll be there quickly to assess the problem and restore comfort.
Emergency or not, we uphold the same high standards of professionalism, transparency, and craftsmanship.
More Than Just a Contractor — A True Home Service Partner
What sets Gene Johnson apart isn’t just what we do — it’s how we do it. We’re not here to upsell you or treat your home like a number on a spreadsheet. We approach each project as neighbors who care about doing the right thing.
Why Mercer Island Residents Choose Us
- Deep Local Roots: We’ve been serving King and Snohomish Counties since 1976. We know the codes, the neighborhoods, the climate, and most importantly — the people.
- Trusted Technicians: Every team member is licensed, background-checked, and trained to deliver exceptional HVAC services with professionalism and courtesy.
- Upfront Pricing: You’ll never be caught off guard. We explain every step and cost in plain language, so you can make informed decisions without stress.
- Comprehensive Services: From plumbing and electrical to HVAC repair and installation, we cover it all. That means no coordinating between multiple companies or juggling appointments.
- Award-Winning Service: We’ve earned our reputation one home at a time. Many of our customers stay with us for years, and refer their neighbors and friends.
Cooling for Homes and Small Businesses Alike
We serve both residential and light commercial clients throughout Mercer Island, WA. Whether it’s an elegant waterfront home, a retail space, or a small business office, our team has the knowledge and flexibility to meet your specific needs.
We offer:
- Commercial AC installation
- Preventative cooling services for offices and shops
- Emergency repair with minimal downtime
- Maintenance plans to protect your investment
It’s Time to Expect More From Your HVAC Company
When you choose Gene Johnson Heating, Cooling, Plumbing & Electrical, you’re getting more than a service provider. You’re gaining a partner in home comfort — one who listens, explains, and delivers.
We’re proud to offer top-tier home services in Mercer Island, WA, and we look forward to helping you enjoy every season in comfort.
Ready to Schedule Your Air Conditioning Services?
Whether you need routine AC maintenance, fast repairs, or a full system upgrade, Gene Johnson is ready to help. With a commitment to honesty, craftsmanship, and local expertise, we make cooling your home simple — and stress-free.
Call now or book online to schedule your air conditioning services in Mercer Island, WA. Experience the service your neighbors trust, and feel the difference of a team that treats your home like their own.
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: 0 | Average rating: 0
Heather Kelly
Vince L.
The technician is very knowledgeable, he do good work. He is very knowledgeable and very patience in explaining tech things to people who never done plumbing before. Gene Johnson did hire a great asset, and I will like to recommend Gene Johnson to anyone who needs their services. Thank you Gene Johnson and Thank You Hugo for the work that you did to the property!
Michael Rill
Had a great experience with Hugo. He was fast, friendly, and clearly knew what he was doing. He fixed our toilet quickly and left everything tidy. Super professional – highly recommend if you need a reliable plumber.
Kyle Cooley
Hugo was excellent! He did a great job of explaining our options, going above and beyond, and working with our budget.
Phil Bytheway
Mark Ochoa did a great job fixing our toilet issue, explained all the options and membership info. Would definitely want to have him come by again if we have an issue.
Jordan Donald
Hugo was the best – in and out quickly and did an amazing job!
James Lazar
Great work, very personable and educational.
Amir
Steven was very knowledgeable. Did minor gas work at my unit, I would use Gene Johnson again.
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.