Expert Heating, Cooling, Plumbing & Electrical Services in Mercer Island, WA

For nearly five decades, Home Comfort Alliance has been the go-to choice on Mercer Island. Whether you are in Town Center, First Hill, East or West Mercer, or Mercerwood near Luther Burbank Park, our licensed technicians deliver heating, cooling, plumbing, and electrical service with same-day availability and transparent pricing.

We are accredited with the Better Business Bureau and backed by thousands of 5-star reviews from your neighbors on Mercer Island.

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Heating & Cooling Services in Mercer Island, WA

Comfort on Mercer Island means clean air, the right equipment size, and quiet operation. Our HVAC Experts can service and install systems that handle humid shoulder seasons and occasional smoke so your home stays comfortable every month of the year.

Heating Installation & Furance Replacement

AC Installation and Cooling Replacement

Heat pump installation, repair, and maintenance

Seasonal HVAC tune-ups

Ductless mini-split systems

Indoor air quality including filtration, UV, and smart thermostats

Air duct cleaning and sealing

Commercial HVAC for new designs and construction

Man and woman shaking hands in a service area with HVAC equipment, emphasizing customer service for heating and cooling solutions.

Not sure whether a high-efficiency furnace, heat pump, or ductless makes the most sense for your home, our HVAC Experts can give you the best recommendations to match your home needs.

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Plumbing Services in Mercer Island, WA

From hillside homes with low water pressure to older houses with aging galvanized pipes or tree-rooted sewer lines, our Mercer Island plumbing team delivers careful, code-compliant work on time and on budget.

Plumbing Services we provide:

Standard, heat pump, and tankless water heater replacement

Leak detection, pipe repair, and whole home repipe

Toilet, faucet, and hose bib repair and replacement

Garbage disposal repair and installation

Water filtration and quality solutions

HVAC technician inspecting equipment in a kitchen, emphasizing home comfort solutions for Bothell residents.

SCHEDULE PLUMBING SERVICE

Electrical Services on Mercer Island, WA

Your electrical system powers comfort, safety, and convenience. Our licensed electricians provide installations and repairs that meet the City of Mercer Island permitting standards.

Electrical services we provide:

Panel upgrades, new circuits, and whole-home rewiring

Standby generator installation, maintenance, and repair

EV charger Installation, Level 2

Troubleshooting and safety inspections

Our electricians are licensed, insured, and trained to handle everything from generator installation, EV charger installation and other electrical issues, safely, quickly, and to Washington State electrical code.

Electrician troubleshooting electrical panel, testing circuits with multimeter, Home Comfort Alliance branding.

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Rebates, Financing, and Special Offers

Many Mercer Island homeowners can stack PSE incentives with federal 25C tax credits on qualifying high-efficiency equipment. We also offer flexible financing and seasonal promotions. Please visit our Rebates and Financing pages for more information.

Illustration of a modern house with icons representing heating, water, and electricity services, relevant to Home Comfort Alliance's plumbing and HVAC offerings.

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Home Comfort Club

A Comfort Club membership ensures that your system receives the essential care it needs for optimal lifespan and energy efficiency. With low monthly payments, it costs less than calling for unplanned service.

You can choose a membership for HVAC, plumbing, or electrical services, or cover all three with one convenient plan.

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Mercer Island HVAC, Plumbing & Electrical FAQs

Answers to common questions from Mercer Island and Lake Washington waterfront homeowners.

Do you service all of Mercer Island and nearby Eastside areas? +

Yes — we proudly serve the entire island, including North End, Town Center, East Seattle, Mercerwood, First Hill, Mid-Island, and South End neighborhoods. We also frequently help nearby Eastside communities across I-90, including Bellevue, Newcastle, and Issaquah, for full HVAC, plumbing, and electrical service.

Can you help Mercer Island homeowners with heat pump rebates and energy incentives? +

Absolutely. Many Mercer Island homes are great candidates for high-efficiency heat pumps and hybrid systems. We stay current on Puget Sound Energy (PSE) rebates, federal 25C tax credits, and local energy-efficiency incentives. Our team can recommend qualifying equipment, handle the installation, and help you with the documentation so you can maximize available savings.

Do you offer same-day or emergency service on Mercer Island? +

Yes. For urgent issues like no heat, AC not cooling, active water leaks, or electrical safety concerns, we do our best to prioritize same-day or next-day service for Mercer Island homeowners. Call us to check current availability and we’ll work to get a licensed technician out as quickly as possible.

What types of HVAC systems do you install in Mercer Island homes? +

We install high-efficiency heat pumps, gas furnaces, air conditioners, and ductless mini-split systems — ideal for Mercer Island’s mix of mid-century homes, townhomes, and remodeled waterfront properties. We’ll evaluate your home’s age, insulation, existing ductwork, and comfort goals to recommend the right HVAC system for year-round comfort and lower utility bills.

Can I schedule plumbing and electrical work with you on Mercer Island? +

Yes — Home Comfort Alliance is a full-service provider for Mercer Island. Our licensed plumbers handle water heaters, tankless upgrades, leaks, drain issues, and fixture replacements. Our electricians can help with panel upgrades, EV charger installations for I-90 commuters, lighting, and safety inspections — all coordinated through one local team.

Do you offer maintenance plans for Mercer Island homeowners? +

We do. Our maintenance plans are designed for the Pacific Northwest climate and Mercer Island’s mix of older and newly renovated homes. Regular tune-ups help your equipment run more efficiently, extend system life, and keep manufacturer warranties valid — plus, members often receive priority scheduling and discounted repair pricing.

Is your pricing upfront for Mercer Island projects? +

Yes. We provide upfront, transparent pricing before work begins, so Mercer Island homeowners know exactly what to expect. For many HVAC installations, water heater replacements, and panel upgrades, we can provide a free in-home estimate and review financing options to make your project as stress-free as possible.

425-645-0404

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