Yes, a mini-split can run off a 20-amp breaker in your home in Suffolk County, with a couple of crucial caveats.

• The system needs to be correctly sized. Some larger mini-split heat pumps may require a 30-amp breaker.
• The circuit must be dedicated to the heat pump and not connected to outlets or other appliances.

Mini-Split Heat Pump Size with a 20-Amp Breaker

Most 9,000 to 12,000 BTU units will work safely on 20-amp circuits. The key consideration is the unit’s maximum current draw.

The National Electrical Code requires that the heat pump’s total current draw must not exceed 80% of the rating of the circuit it is on. Any heat pump installed on a 20-amp circuit would need to have a maximum current draw of 16 amps or less.

Depending on the size of the heat pump you choose, your technician might run a dedicated circuit with a 30-amp breaker (usually for units exceeding 18,000 BTU).

Multiple Units May Require a Panel Upgrade

One thing to consider when planning a mini-split installation is how many individual units you will run. For a full home, you might need three or four indoor air units and potentially two outdoor units to serve the interior climate zones. This could require several dedicated circuits and an electrical panel upgrade.

It’s important to choose a trusted HVAC contractor in Suffolk County with the right licenses.

Soundview HVAC has served Eastern Long Island for over 25 years. We hold an HVAC Electrical license (RE-4861) for in-scope electrical work, and will ensure that your system is safe. The right electrical configuration will ensure that your system is efficient, protected from overheating and damage, and safe to run year-round in the most demanding weather scenarios.

If your home needs a panel upgrade or other out-of-scope modifications, we will work directly with a Master Electrician during the installation.

Begin Your Consultation for a Mini-Split Installation

Soundview HVAC installs dependable and energy-efficient mini-split heat pumps from Lennox® and other leading brands. We are a Lennox Premier Dealer™. Whether you need a single mini-split or a whole-home system with zoning control, we will maximize your budget to deliver reliable comfort.

Talk to our team at 631-209-1744 or request your heat pump quote and home comfort consultation online today.