Can I use the Power Extender Kit with a boiler?

No. The Power Extender Kit (PEK) can only be used on furnace or heat pump systems without a C wire—this is because the PEK requires R (power), G (fan), and Y (compressor) wires to operate, and boiler systems do not have these G and Y wires.

For assistance installing an ecobee with a boiler system lacking a C wire, please take a look at our Support article regarding 2-wire installations.



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