Power Your Ductless Heating and Cooling

Electrical installation for mini split systems in Denver homes that need climate control without ductwork.

If your Denver home does not have ducts or you are adding conditioned space in a basement or garage, a mini split system provides heating and cooling without tearing into walls or ceilings. But the system will not run without the right electrical supply, and improper wiring can cause the unit to fail or trip breakers repeatedly.

Mile High Electrician LLC installs the electrical components required for mini split HVAC systems, including circuit sizing, dedicated breaker installation, and power supply connections to the outdoor condenser and indoor air handlers. The work is coordinated with your HVAC contractor to ensure the system operates safely and efficiently once the equipment is in place.

To discuss electrical installation before your mini split system is installed in Denver, contact Mile High Electrician LLC for a consultation.

What the electrical work involves

The installation begins with calculating the electrical load for your mini split system and running a dedicated circuit from your panel to the location of the outdoor unit. In Denver homes, this often involves running conduit along exterior walls or through attic spaces. A disconnect box is installed near the condenser to allow safe servicing, and the indoor air handler is wired to the outdoor unit according to manufacturer specifications.

Once the electrical work is completed and the HVAC contractor finishes the installation, the system will power on without tripping breakers, and the air handlers will respond to thermostat commands. The dedicated circuit ensures the mini split does not share power with other appliances, which prevents overloads and maintains steady operation.

The service includes circuit installation, breaker placement, and power connections to the mini split equipment. It does not include refrigerant line installation, mounting the air handlers, or configuring the thermostat, as those tasks are handled by the HVAC contractor. Coordination between trades is required to ensure all connections are completed in the correct sequence.

What to clarify before the system goes in

Homeowners often want to understand how the electrical work fits into the overall installation timeline, what size circuit is needed, and whether their current panel can support the new load.

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What size circuit does a mini split need?
Most residential mini split systems require a 15 to 30 amp circuit depending on the unit's power draw. The exact size is determined by the manufacturer's specifications and the number of indoor air handlers being installed.
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Can the mini split share a circuit with other appliances?
No, mini split systems require a dedicated circuit to prevent overloads and ensure consistent operation. Sharing a circuit can cause the breaker to trip or the system to shut down unexpectedly.
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What if my panel does not have room for a new breaker?
If your panel is full, a subpanel can be installed to provide additional breaker space. Alternatively, the panel may need to be upgraded if it lacks the capacity to handle the new load.
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How is the outdoor unit connected to the indoor air handlers?
The outdoor condenser is wired to the indoor units using control wiring run by the HVAC contractor. The electrical contractor provides power to the outdoor unit, and the HVAC contractor completes the low-voltage connections between components.
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When should the electrical work be completed?
The electrical circuit should be installed before or during the HVAC installation so that power is available as soon as the equipment is mounted and the refrigerant lines are connected. Coordination between contractors ensures the work progresses without delays.

If you are planning to install a mini split system in your Denver home, Mile High Electrician LLC can handle the electrical installation and coordinate with your HVAC contractor to ensure everything is wired correctly. Learn more by reaching out to schedule a consultation.