Mysa C-Wire Power Adapter

Mysa C-Wire Power Adapter helps provide a supported power path for compatible 24V thermostat systems that need a C-wire. Mysa Smart Thermostat requires continuous 24V power, and some compatible heating or cooling systems do not already have a usable C-wire at the thermostat location.

When supported by your wiring and system type, the C-Wire Power Adapter can help power Mysa Smart Thermostat without needing to run a new thermostat wire. It is especially relevant for some compatible systems where the thermostat wiring does not already provide the continuous power a smart thermostat needs.

Use the compatibility checker and follow Mysa’s installation guidance before purchasing. If you are unsure about wiring, system compatibility, or installation requirements, work with a licensed HVAC professional or electrician.

Key compatibility note: For compatible 24V systems only. Not for line-voltage electric baseboard heaters, electric in-floor heating, or ductless mini-splits.