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Climate & Energy

How to Choose a Smart Thermostat

Updated August 24, 2026 · Smart Homes Guides Editorial Team

How to Choose a Smart Thermostat

Compatibility comes first

Identify the HVAC system type and existing thermostat wiring. Check whether a common wire is present or whether the selected model supports an approved power accessory.

Features worth comparing

Use the manufacturer compatibility checker for your exact wiring before purchase.

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