Part / accessory · Google

Google Nest Power Connector

verified 2026-10-07 Specs from Google Store: Nest Power Connector. Also known as: nest power connector.

Specs

purposeAlternative to a C wire for Nest thermostats
system voltage24 VAC only (not millivolt or high-voltage)
install locationfurnace, air handler or zone controller
compatibleNest Thermostat; Nest Thermostat E; Nest Learning Thermostat (3rd gen)

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What does the Google Nest Power Connector work with?

2 models in the graph.

  • Google Nest Learning Thermostat (4th gen) OEM verified
    Google's 4th-gen spec page says a C wire or Nest Power Connector is needed in <1% of homes; the Power Connector store page lists only Nest Thermostat, Thermostat E and 3rd-gen Learning, so confirm with Google before buying.
  • Google Nest Thermostat (2020) OEM verified
    Only needed if your system lacks a C wire and the thermostat reports power issues (often heating-only/cooling-only systems or zone controllers). 24 VAC systems only; installs at the furnace/air handler.

Informational only. Confirm with the manufacturer before buying or installing. Spotted a mistake? Report it.