Daikin D4271C

Daikin D4271C Commercial Thermostat Control, 4H/2C, Title24, Web enabled, WiFi capable


Manufacturer part number:



Daikin Company, L.P.

The Daikin D427*C commercial thermostats offer simple as you want operation for the most basic users along with the new option of adding connectivity through Wi-Fi. When the optional Wi-Fi module is added to the thermostat, users have the ability to use the free Skyport Cloud Services on their mobile devices. The thermostats also have a local API so that they may interface with many of the most popular home automation systems.

And these thermostats work with Amazon’s Alexa*.

The Daikin D427*C thermostats now offers OpenADR 2.0b compliance to make the thermostats eligible for Utility incentives*. The thermostats also meet the stringent requirements of California’s Title 24*. Approved for AirCarePLUS

All Daikin D427*C thermostats come equipped with a scrolling backlit display that can be adjusted for different lighting requirements, such as a night-light in a dark hallway, or can be turned off entirely for a bedroom location. The thermostat can be set to display English Spanish or French.

The Daikin D427*C thermostats are able to meet all of your HVAC control needs for Gas/Electric, Heat Pump, and Dual Fuel equipment using industry leading design, features, and pricing.

* optional Wi-Fi module (TSTATGAC-VWF) required

Standard Features
  • Programmable
  • OpenADR compatible
  • Title24 Compliant
  • Easy to read, Backlit Display
  • Adjustable backlight intensity
  • Customizable scrolling marquee with English, Spanish, and French language support
  • Customizable service alerts and error messages
  • Switchable manual or auto-changeover
  • Morning, day, evening, and night time periods
  • Outdoor sensor ready
  • Service filter reminder
  • UV lamp replacement reminder
  • Aux heat indicator
  • Random start
  • Dual units (F or C)
  • Input for condensate overflow sensor
  • Compatible with optional Wi-Fi module
  • Compatible with optional Wi-Fi sensor
Products specifications
Attribute nameAttribute value
ApplicationConventional or Heat Pump
Brand NameDaikin®
Control RangeHeat: 35 to 99 °F Cool: 35 to 99 °F
DisplayColor LCD
Fan SwitchingAuto-On
ManufacturerDaikin Company, L.P.
Number of Stages4H/2C
Power SourceHardwired
Programs Per Week7
SeriesPremium Series
System SwitchingAuto-Heat-Cool-Off
Temperature Settings Per Day7
Terminal DesignationsRc, Y1, W1/O/B, Acc+, Rh, Y2, W2, Acc-, G, C
TypeInternet enabled, WiFi
Voltage Rating24 VAC (3VA minimum)