HVAC Company In Mercer Island, WA

Whether you need fast heating repairs, efficient air conditioning solutions, or expert electrical work, unreliable systems can lead to high energy costs, safety risks, and home discomfort. A properly maintained system saves you money and ensures long-term performance. 

At Green City Heating and Air Conditioning, we deliver top-tier heating, air conditioning and electric services in Mercer Island, WA, with certified technicians, industry-leading warranties, and a reputation for excellence. With our BBB A+ rating and 100% satisfaction guarantee, you get the best service—done right the first time.

Heating Services: Stay Warm and Comfortable

Winters in Mercer Island can be unpredictable, and a reliable heating system is non-negotiable. Without a properly functioning furnace or heat pump, your home could become uncomfortable, inefficient, and even unsafe. At Green City Heating and Air Conditioning, we provide comprehensive heating services to ensure your home stays warm, efficient, and cost-effective.

Our Heating Services Include:

• Furnace Repair & Installation: If your furnace isn’t heating properly, making loud noises, or cycling on and off too often, it may need professional attention. Our technicians diagnose issues quickly and provide fast repairs to restore comfort. If a replacement is required, we install high-efficiency Daikin and Lennox furnaces built for long-term savings and reliability.
• Boiler Maintenance & Replacement: Boilers are essential for consistent, radiant heating, but over time, they lose efficiency and can develop leaks or pressure issues. Our maintenance services keep your boiler running smoothly with regular checkups and cleanings. If it’s time for a replacement, we offer modern, energy-efficient boiler systems that enhance your home’s comfort and heating performance.
• Ductless Mini-Split Systems: If you need customized heating for specific rooms or have a home without existing ductwork, a ductless mini-split system is an excellent option. These systems offer zoned heating, allowing you to control the temperature in different areas of your home separately. This improves comfort and reduces energy waste.

A reliable heating system ensures comfort and efficiency all winter. Whether you need a repair, tune-up, or new installation, we’ve got you covered. Stay warm—call us today for expert heating service!

Air Conditioning Solutions: Efficient Cooling for Mercer Island Summers

At Green City Heating and Air Conditioning, we provide comprehensive cooling solutions to ensure your home stays energy-efficient and comfortable during the hottest days of the year.

Our Air Conditioning Services Include:

• AC Repair & Maintenance: If your air conditioner is blowing warm air, making loud noises, or failing to cool your home properly, it could be due to clogged filters, refrigerant leaks, or a failing compressor. Our technicians perform in-depth diagnostics, fix issues quickly, and provide routine maintenance to keep your system running at peak efficiency while preventing costly breakdowns.
• New AC Installation & Replacement: Older AC units consume more energy and struggle to cool your home efficiently, leading to higher electricity bills and uneven temperatures. We install high-performance Daikin and Lennox air conditioning systems designed to deliver consistent cooling, lower energy consumption, and improved indoor air quality while keeping your home comfortable.
• Ductless Mini-Split AC Systems: If you need flexible, zoned cooling without installing ductwork, a ductless mini-split system is the perfect solution. These systems allow you to control the temperature in specific rooms individually, reducing energy waste and utility costs while providing customized comfort for every area of your home.
• Smart Thermostat Integration: A traditional thermostat may cause unnecessary energy waste, leading to higher cooling costs and inefficient temperature control. With a smart thermostat, you can remotely control your AC system, set customized cooling schedules, and optimize energy use, ensuring maximum efficiency and comfort throughout the day.

Beat the Mercer Island heat with an efficient, reliable cooling system. Whether it’s repairs, maintenance, or a new AC installation, we ensure top performance and energy savings. Stay cool—call us today for expert air conditioning service!

Expert Electrical Services: Powering Your Home with Safety and Precision

Whether you're upgrading your home's electrical system or need urgent repairs, our licensed electricians ensure your home stays safe, efficient, and up to code. At Green City Heating and Air Conditioning, we offer comprehensive electrical services designed to enhance your home’s safety, functionality, and energy efficiency.

Our Electrical Services Include:

• Panel Upgrades & Circuit Breaker Installation: Many older homes in Mercer Island still rely on outdated electrical panels that struggle to handle today’s power demands. If you experience frequent breaker trips, flickering lights, or overloaded circuits, it’s time for an upgrade. We install modern, high-capacity panels and circuit breakers to improve safety, prevent electrical hazards, and ensure your home can support modern appliances without risk.
• Whole-Home Surge Protection: Sudden power surges caused by lightning, faulty wiring, or utility grid fluctuations can damage expensive electronics, appliances, and even your HVAC system. Our whole-home surge protection services shield your home from unexpected voltage spikes, preventing costly repairs and extending the life of your valuable devices.
• Lighting & Ceiling Fan Installation: Upgrading your home’s lighting improves visibility, energy efficiency, and overall ambiance. Whether you want recessed lighting, outdoor security lighting, or modern LED fixtures, our electricians ensure professional installation with clean wiring, smart integrations, and energy-efficient solutions. We also install ceiling fans to enhance air circulation, keeping your home cooler while reducing AC usage.

Expert electrical solutions keep your home safe and powered efficiently. From panel upgrades to whole-home wiring, we provide top-quality service without subcontractors. Don’t risk electrical issues—contact us today for professional electrical service!

HVAC & Electrical Myths – What You Should Really Know

Many homeowners in Mercer Island, WA, fall for common myths about heating, air conditioning, and electric systems. These myths can lead to higher energy costs, inefficient performance, and even safety risks. At Green City Heating and Air Conditioning, we’re here to debunk these misconceptions and provide expert-backed facts about your home’s essential systems.

Common HVAC & Electrical Myths – Debunked:

• Bigger HVAC systems provide better performance: Many homeowners assume a larger HVAC unit means better heating and cooling. However, an oversized system cycles on and off too quickly, leading to inconsistent temperatures, higher energy bills, and excessive wear and tear. The right-sized unit is key to efficiency and comfort.
• My HVAC system doesn’t need maintenance if it’s running fine: One of the biggest mistakes homeowners make is skipping regular maintenance. Just like a car, HVAC systems require regular tune-ups to prevent breakdowns, improve efficiency, and extend their lifespan. Professional servicing can catch minor issues before they turn into costly repairs.
• All electricians provide the same level of service: Not all electricians are equal. Licensed, certified electricians follow strict safety protocols and local codes, while unqualified technicians may cut corners, leading to dangerous wiring issues. Always hire experienced professionals to handle your electrical work safely.
• Power strips and surge protectors are the same thing: Many homeowners mistake power strips for surge protectors, assuming they protect devices from voltage spikes. However, only true surge protectors offer protection against sudden power surges. If you want complete home surge protection, a whole-home surge protection system is the safest option.

Don’t fall for HVAC and electrical myths—trust the experts! Call us today for reliable, fact-based service.

Act Now – Contact Green City Heating and Air Conditioning Today!

Your comfort, safety, and energy efficiency depend on a properly maintained heating, air conditioning and electric system in Mercer Island, WA. At Green City Heating and Air Conditioning, we are committed to providing top-quality service, honest pricing, and expert craftsmanship to homeowners. Whether you need a fast repair, system upgrade, or professional electrical work, our certified technicians get the job done right the first time—no subcontractors, just our trusted team. Don’t wait for small issues to become costly problems. Call us today for a free estimate, or schedule your service online! 

Mercer Island’s Trusted HVAC & Electrical Experts—Call Us Now!