Power Extender Kit
Make any home an ecobee Smart Thermostat home with the Power Extender Kit—an easy and cost-effective solution for homes without a C or common wire.
Before adding to your cart, use the Thermostat Compatibility Checker to see if your install needs the Power Extender Kit. Please note, all models except Smart Thermostat Lite come with it.
Return within 30 days for full refund
Free standard shipping (3-7 business days) and returns
Dedicated support team
Easily install any ecobee Smart Thermostat with our Power Extender Kit.
Skip the expensive common wire installation with our do-it-yourself ecobee Power Extender Kit. It’s smart, straightforward, and a great way to save money.
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1. Check thermostat compatibility
Not sure if you need a Power Extender Kit? Use the Thermostat Compatibility Checker to find out.
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2. Install with confidence
Scan the QR code on the box and follow the easy step-by-step installation guide to attach the Power Extender Kit to your furnace or air handler.
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3. Built to last
Once installed, it just works and will continue to power your ecobee smart thermostat for its entire life, with no maintenance or upkeep needed.
Good to know
The Power Extender Kit comes with all ecobee smart thermostats except for the Smart Thermostat Lite. Also keep in mind that it is only compatible with ecobee smart thermostats.
Check whether your thermostat requires the Power Extender Kit
Most ecobee thermostat installations do not require the Power Extender Kit. To find out if your installation needs the Power Extender Kit, use the Thermostat Compatibility Checker before purchasing.
Your Power Extender Kit questions answered.
Not the DIY type?
Find a certified Pro near you to install your ecobee smart thermostat with our Power Extender Kit.