What are the opening hours?

Monday 5am - 5pm Tuesday 5am - 5pm Wednesday 5am - 5pm Thursday 5am - 5pm Friday 5am - 5pm

4th Systems

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4th Systems is a full-service Electrical Contractor located in West Seattle, Washington. We operate on call 24/7 for emergencies, on contract, and by the hour.
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We serve the greater Seattle area for all full electrical services needed by our customers. 4th Systems is a Seattle-based electrical contractor established in 2022. They offer comprehensive electrical services for residential and commercial clients. Their expertise covers everything from power and lighting systems to security systems, fire protection systems, home automation systems, and much more; ensuring the safety and functionality of your electrical infrastructure, 24/7.

11/02/2026

What do you do when a fire burns much of an apartment building and a normal temporary power setup won't work? On this Mountlake Terrace insurance project, a standard overhead or underground temp pole wasn't the answer — so 4th Systems engineered a creative temporary power solution: connecting to power from an existing non-occupied unit and coordinating a special service connection with the electrical utility. Semi-residential, semi-commercial, and fully custom to the situation. That's what 24/7 emergency and restoration electrical work actually looks like — solving the problem in front of you, not just installing the standard option. For emergency electrical service in the greater Seattle area, call (206) 867-2800, or book a walkthrough at 4thsystems.com.

10/31/2026

A big home's electrical service should be sized for what's next, not just what's now.
What does a properly sized service look like for a Mercer Island custom home? A 400 amp service with two 200 amp disconnects, set up so solar can be interconnected to it in the future — and inside, both 200 amp panels are SPAN panels. 4th Systems was there through the entire new construction electrical for this project, and has serviced the home since as their trusted electrical and low-voltage contractor partner. As a SPAN dealer, installer, and programmer, 4th Systems doesn't just install smart panels — we program them, so circuits, priorities, and monitoring actually match how the home lives. If you're building or upgrading in the greater Seattle area, size the service for the future you plan. Book a walkthrough at 4thsystems.com or call (206) 867-2800. Emergency service available 24/7.

05/12/2026

What Are the Real Benefits of Preventive Electrical Maintenance for Your Business? If your business has never experienced an unexpected electrical failure, consider yourself lucky — but don’t count on that luck lasting. For commercial property owners and business operators on Mercer Island, the question isn’t if something will go wrong, but when. Preventive electrical maintenance is the proactive approach that keeps your systems running safely, your team productive, and your costs predictable.

Discover the key benefits of preventive electrical maintenance for Mercer Island businesses — reduce downtime, cut costs, and stay compliant.

Address

11235 26th Avenue SW
White Center, WA
98146

Opening Hours

Monday	5am - 5pm
Tuesday	5am - 5pm
Wednesday	5am - 5pm
Thursday	5am - 5pm
Friday	5am - 5pm

Website

https://4thsystems.com/, http://www.4thsystems.org/, http://www.4thsystems.net/, http://www.4thsystems.com/

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