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Smoke & Carbon Monoxide Detector Installation

Working smoke and carbon monoxide detectors save lives — and Washington has specific requirements for them. Eco installs and replaces hardwired and interconnected detectors so your whole home is protected and up to code.

  • 4.9★ · 2,300+ Google reviews
  • Licensed, bonded & insured
  • 100% Satisfaction Guarantee
  • Upfront, flat-rate pricing

What's included

Complete smoke & co detectors from one licensed, family-owned team across the Puget Sound.

  • Smoke detector installation
  • Carbon monoxide detector installation
  • Hardwired and interconnected systems
  • Combination smoke/CO units
  • Code-compliant placement
  • Battery-backup options

The Big Picture

Where this fits in your home's electrical system

Power enters at the service mast, passes through the meter into the panel, and branches into every circuit in the house. Here's the whole path — and where this service fits.

Cutaway of a Puget Sound home's electrical system at dusk Power arrives at the service mast and meter, feeds the main panel in the garage, and branches to circuits for outlets, lighting, fans, detectors, an EV charger, and a backup generator outside.
  1. Service mast & meter Where utility power lands on your home — the weatherhead, riser, and meter base.
  2. Main electrical panel The heart of the system: breakers that protect every circuit in the house.
  3. Whole-home surge protection Installs at the panel to shield electronics from utility spikes and nearby strikes.
  4. Wiring & circuits The branch circuits behind your walls — the runs that age out in older Seattle homes.
  5. Outlets & switches Every connection point — including GFCI/AFCI protection where code requires it.
  6. Lighting Fixtures, recessed cans, and the dimmers and controls that run them.
  7. Ceiling & ventilation fans Ceiling, exhaust, and whole-house attic fans — comfort and moisture control.
  8. Smoke & CO detectors You're here Hardwired, interconnected alarms on every level — the code standard for safety.
  9. EV charger A dedicated 240V circuit from the panel to Level 2 charging in your garage.
  10. Backup generator Standby power with a transfer switch, sized to what you want to keep running.

Illustration of a typical Puget Sound home — layouts vary, and we verify what your home actually has on site.

What To Expect

How smoke & co detectors with Eco goes, start to finish

  1. Book your visit

    Call, text, or book online — real people answer early and late, with same-day appointments when scheduling allows.

  2. Diagnose & scope

    A licensed electrician tests the circuit, panel, and connections involved — and shows you what they find, in plain language.

  3. Approve the price

    You get a clear, flat-rate price and your options before any work begins — approve it first, or don't. No surprises on the invoice.

  4. The work, done right

    Background-checked techs do the job to code, pull permits when the work requires them, and protect your home while they're in it.

  5. Walkthrough & guarantee

    We test everything, walk you through what was done, clean up, and stand behind the work with our 100% Satisfaction Guarantee.

Why choose Eco

One licensed company for electrical, plumbing, and HVAC — no juggling multiple contractors.

Upfront, flat-rate pricing approved before any work begins — no surprises.

Background-checked, drug-tested technicians who treat your home like their own.

Same-day and emergency availability across the greater Seattle / Puget Sound area.

Smoke & CO Detectors FAQs

Where are detectors required?

Code generally requires smoke detectors in each bedroom, outside sleeping areas, and on every level, with CO detectors near sleeping areas. We'll ensure correct, compliant placement.

How often should detectors be replaced?

Smoke detectors every ~10 years and CO detectors every ~5–7 years, or per the manufacturer. We can assess and update your whole home.

Need smoke & co detectors? Let's get it handled.

Book online anytime or talk to our team — you'll get a clear, upfront price before any work begins.

No fine print

The Eco Triple Guarantee

Every electrical, plumbing, and HVAC job is backed by three promises in writing — so you can say yes with total confidence.

Call Now (206) 970-1031 Text Book Online