AC & Mini Split Wiring

Air Conditioning & Mini Split Circuit Installation in Issaquah & East King County

Professional electrical installation for mini split systems, heat pumps, and central AC. Properly sized circuits, code-compliant disconnect, and coordinated installation with your HVAC contractor. 30+ years experience.

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Licensed & Bonded
Properly Sized Circuits
5-Star Rated
Permit Handled
What We Wire

AC Systems We Install & Wire

Air conditioning and mini split systems require precise electrical work. The wrong wire gauge, undersized breaker, or missing disconnect can void your warranty and create a safety hazard. We wire them correctly every time.

Mini Split Systems

Single-zone and multi-zone ductless mini splits require a dedicated 240V circuit, properly sized breaker, and outdoor disconnect switch.

Central Air Conditioning

Central AC condensers need a dedicated 240V circuit with a weatherproof disconnect — sized to match the unit's MCA and MOCP ratings.

Heat Pump Systems

Heat pumps provide both heating and cooling. We wire both the indoor air handler and the outdoor condenser with properly coordinated circuits.

Panel Capacity Check

Before installation, we verify your panel can support the new AC load. If an upgrade is needed, we can handle that too.

Our Process

AC Circuit Installation — What to Expect

We coordinate with your HVAC contractor to ensure the electrical work is ready at the right stage of the installation.

1

Review Equipment Specs

We review the manufacturer's electrical specifications for your AC unit — MCA, MOCP, and voltage requirements — before starting.

2

Panel Assessment

We verify your panel has available capacity for the new dedicated circuit. A 200A panel can typically support a mini split without any upgrades.

3

Permit Application

We pull the required electrical permit. Permits are required for all new dedicated circuits and HVAC electrical work in Washington.

4

Circuit Installation

A dedicated 240V circuit is run from your panel to the AC location using the correct wire gauge in weatherproof conduit.

5

Disconnect & Connection

A code-compliant, weatherproof disconnect is installed near the outdoor unit and the circuit is terminated correctly.

6

Inspection & Handoff

We coordinate the final inspection and confirm everything is ready before your HVAC contractor makes the final connections.

Common Questions

AC Circuit Installation FAQ

No — AC electrical installation requires a licensed electrician. Improper wiring can void your equipment warranty, fail inspection, and create a fire hazard. Washington State requires a licensed electrician for all new 240V circuit installations.
Most 200-amp panels can support a typical mini split or central AC system without an upgrade. 100-amp panels may be borderline depending on existing loads. We'll assess your panel and give you a clear answer before quoting.
Yes. New dedicated circuits and HVAC electrical work require electrical permits and inspections in Washington State. We handle the permit application and are present at the final inspection.
Absolutely. We work alongside your HVAC contractor to ensure the electrical rough-in is ready when they need it, and that the final connections are made correctly and inspected.
Where We Work

AC & Mini Split Wiring Across East King County

MRK Electric installs AC circuits and mini split wiring throughout Issaquah, Bellevue, Redmond, Sammamish, and all of East King County. Permitted, inspected, and done right.

Not sure if we cover your area? Give us a call — we'll let you know right away.

Getting a New AC or Mini Split?

Call us early in your planning — we'll assess your panel and have the circuit ready when your HVAC contractor arrives.

Call (425) 766-4793 Request a Free Quote