Evergreen State HVAC

Our Story

Servicing East King and Snohomish County

  • 24/7 HVAC Service

  • No Subcontractors

  • Licensed, Bonded, Insured

  • BBB A+

(425) 252-3114

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Since 1968, Evergreen State Heat & AC has focused on one thing: doing the basics better than anyone else for homeowners in Snohomish and East King County.

We started as a small local shop and grew by doing what we said we would do, communicating clearly, and showing up when our customers needed us. Today, we’re a union shop with dedicated installation and service teams, but the mindset is the same:

  • Design systems to last
  • Install them the right way
  • Maintain them for the long haul
  • Stand behind them with our Evergreen “No Surprises” 10-Year Comfort Guarantee™ on qualifying system
Several white service vans with "Evergreen State Heat & AC" logos, known for affordable plumbing, are parked in a row on a gravel lot, with trees and an American flag in the background. Plumbers in Black Diamond, WA
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Outdoor air conditioning unit with two large fans mounted on a wooden exterior wall, next to electrical boxes, a water heater, and beneath window blinds. Plumbers in Black Diamond, WA

How We Operate in Your Home

  • Clear Communication
    We explain what’s happening with your system, in plain language. You see your options, pricing, and next steps before we start work. No Surprises is a promise, not a slogan.
  • Relentless Consistency
    Same proven process on every job. Same checklists. Same standards. That’s how we protect your comfort, efficiency, and equipment life year after year.
  • Confident Ownership
    If it’s our work, we own it. From design to install to maintenance, we stand behind the result. If something isn’t right, we fix it.