How to install a smart thermostat with only two wires
In short: Upgrading to a smart thermostat often requires new wiring, but expert Richard Trethewey demonstrates how to use a hub to bypass this complication. This guide shows you how to modernize your HVAC controls without tearing into your walls.
Heating and plumbing expert Richard Trethewey explains how to integrate a smart thermostat into an existing system using a hub. This method allows you to keep your original two wires in the wall, avoiding the need for extensive rewiring.
The process involves mounting the hub near the furnace and connecting the furnace wires—specifically the red, white, and blue common wires—to the hub. Once the hub is configured, the new thermostat can be mounted and connected using the existing two-wire setup.
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Sources
- Summary by Intellect · source: How to Upgrade to a Smart Thermostat without Changing the Wiring | Ask This Old House
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