Smart home
Install a smart thermostat
Photograph the old wiring, match the letters, and most swaps take under an hour. The one thing to check first is whether your system has a C wire.
Intermediate About 60 minWhole homeCare needed
Video: Google Nest (YouTube) — hand-picked by Xiane and matched to the written steps below.
Kill the HVAC breaker before touching wires. If you find high-voltage wiring or no low-voltage letters, stop and call an HVAC pro.
Steps
Tools
- Small screwdriver
- Phone camera
- Level
- Drill (for new anchors)
Parts
- Smart thermostat
- C-wire adapter (only if your system lacks one)
Published September 9, 2026 · Last reviewed September 1, 2026 · Next review March 1, 2027 · Source: Video: Google Nest (YouTube)