Ecobee EB-PS-01 Power Supply

The Ecobee EB-PS-01 Power Supply is a dedicated external 24VAC transformer designed to provide reliable common wire (C-wire) power for smart thermostats in systems lacking a built-in 24V supply. Engineered to eliminate thermostat power cycling and connectivity issues caused by insufficient voltage, this power adapter ensures a stable 24V AC, 40VA output suitable for the entire Ecobee lineup, including the SmartThermostat with voice control, Ecobee4, and Ecobee3 Lite. For contractors working with older hydronic heating systems or heat-only millivolt setups, the EB-PS-01 bridges the gap by providing the necessary logic power without requiring a full system rewire. The unit features standard two-prong electrical plug-in capability and 20-foot lead wires, allowing for flexible termination at the thermostat base. This HVAC power adapter effectively prevents "No Power" errors by ensuring constant current flow to the control board, maintaining the Wi-Fi connectivity and logic functions essential for high-performance climate control.

• Universal Compatibility: Works with all Ecobee generations and most other 24V smart thermostats requiring a C-wire connection.
• Simplified Installation: Plug-and-play design allows for rapid deployment in homes with older two-wire or heat-only HVAC systems.
• Circuit Integrity: Provides dedicated power to the thermostat, isolating control logic from potential interference on the primary heating/cooling circuit.
• Long Lead Wires: Includes 20 feet of cable to accommodate various mounting distances between the wall outlet and the thermostat location.
• Voltage Stability: Delivers a consistent 24VAC output to prevent erratic sensor readings or system rebooting.

How do I install the Ecobee EB-PS-01 on a two-wire heating system?
Connect the two transformer leads directly to the 'C' and 'Rc' terminals on the Ecobee backplate. Ensure the existing heating wires are connected to 'Rh' and 'W' to maintain independent circuit isolation.

Can this power supply be used with multi-zone hydronic systems?
Yes, it is often utilized when the zone valve transformer lacks sufficient VA capacity to power multiple smart thermostats simultaneously.

Will the EB-PS-01 interfere with the cooling system transformer?
When installed correctly using the 'Rc' and 'Rh' terminals, the ecobee's internal logic keeps the power sources isolated, preventing technical conflicts between systems.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.