Instructions / Assembly
Compatibility
Nest works with over 95% of 24V heating and cooling systems,
including gas, electric, oil, solar, hot water, geothermal, forced air,
heat pump and radiant. It can control:
• Heating: one, two and three stages (W1, W2, W3)
• Cooling: one and two stages (Y1, Y2)
• Heat pump: with auxiliary and emergency heat (O/B, AUX, E)
• Fan (G)
• Power (C, Rh, Rc)
• Humidier or dehumidier (HUM, DEHUM)
Nest’s
*
connector can accept only one of these wires:
W3, E, HUM or DEHUM.
Adding a common C wire is not required in 99% of installations.
Professional installation recommended for:
• Dual fuel systems (heat pump with furnace)
• Whole-home humidiers and dehumidiers
Go to nest.com/works to make sure Nest will work in your home
and nd out if you’ll need Nest Concierge professional installation.
Watch the video
Before you install Nest, watch the installation video
at nest.com/support
Questions? Visit support or give us a call at 855-4MY-NEST.