Resideo TH6220U2000 T6 Pro programmable thermostat provides reliable multi-stage comfort control with 2 Heat/2 Cool capability for compatible conventional HVAC systems and support for up to 2 Heat/1 Cool heat pump applications.

Designed for residential heating and cooling, it offers 7-day, 5-2-day, 5-1-1-day or non-programmable operation for flexible temperature scheduling.  The T6 Pro uses Resideo’s UWP mounting system to simplify installation and service, while on-screen “Heat On” and “Cool On” operating indicators provide clear system-status confirmation.

Dual-fuel and auxiliary heat lockout capabilities are also supported with a compatible wired outdoor sensor, making the thermostat well-suited for replacement, retrofit and new HVAC installations.

Resideo TH6220U2000 directly replaces TH6220D1002 Programmable Thermostat, T8511G1047 Deluxe Electronic Heat Pump Thermostat and 1220NC Non-Programmable Thermostat.
 

Frequently Asked Questions
 

• What type of HVAC systems is the Resideo TH6220U2000 compatible with?

The TH6220U2000 supports up to 2 Heat/2 Cool conventional systems and up to 2 Heat/1 Cool heat pump systems.

• Does the TH6220U2000 support dual-fuel systems?

Yes.  The thermostat supports dual-fuel applications and auxiliary heat lockout when used with a compatible wired outdoor sensor.

• What programming options are available?

The T6 Pro can be configured for 7-day, 5-2-day, 5-1-1-day or non-programmable operation, allowing flexible scheduling for different HVAC applications.

• Does the thermostat show when heating or cooling is operating?

Yes.  The display shows “Heat On” when heating is active and “Cool On” when cooling is active.

• What is the temperature adjustment range?

The heating setpoint range is 40°F to 90°F (4.5°C to 32°C), while the cooling setpoint range is 50°F to 99°F (10°C to 37°C).

• What mounting system does the TH6220U2000 use?

The thermostat includes the UWP mounting system for direct wall installation. A J-box adapter and cover plate are also included for mounting to a vertical 2 x 4-inch junction box.

• Can the TH6220U2000 use an outdoor temperature sensor?

Yes.  The C7089U1006 wired outdoor sensor can be used for dual-fuel or auxiliary heat lockout applications. The outdoor temperature is not displayed on the thermostat.

• Can an indoor remote sensor be connected?

Yes.  The C7189U1005 wired indoor sensor is compatible with the TH6220U2000.

• What are the thermostat dimensions?

The thermostat measures approximately 4-1/16 inches high x 4-1/16 inches wide x 1-5/32 inches deep.

• What thermostats does the Resideo TH6220U2000 replace?

Resideo TH6220U2000 directly replaces TH6220D1002 Programmable Thermostat, T8511G1047 Deluxe Electronic Heat Pump Thermostat and 1220NC Non-Programmable Thermostat.