Description
The PRO1 IAQ T755S Programmable Thermostat is a versatile, contractor-friendly thermostat designed for multi-stage HVAC systems. Supporting up to 2 heat / 2 cool conventional systems or 3 heat / 2 cool heat pump systems, the T755S delivers reliable temperature control for residential and light commercial applications.
Featuring an extra-large backlit display and simple menu-driven programming, the thermostat allows homeowners to easily manage schedules while giving contractors flexible installation options. The T755S can be configured as 7-day programmable, 5-1-1 programmable, or non-programmable, making it adaptable for different comfort preferences.
The thermostat also supports wired indoor and outdoor remote sensors, allowing installers to average temperatures across rooms or optimize system performance using outdoor balance point control. With features like adjustable heating and cooling cycle rates, compressor protection, and room temperature calibration, the T755S helps ensure accurate temperature control and dependable HVAC system operation.
Features:
- Universal system compatibility – Supports up to 2 Heat / 2 Cool conventional or 3 Heat / 2 Cool heat pump systems
- Flexible programming options – Choose 7-day, 5-1-1 programmable, or non-programmable operation
- Large blue backlit display for easy visibility and simple temperature adjustments
- Remote sensor compatible – Works with PRO1 R251S indoor or R250S outdoor sensors for improved system sensing
- Adjustable heating and cooling cycle rates for precise comfort control
- Dual balance point capability when paired with an outdoor sensor
- Battery or hardwired 24V power options for flexible installation
- Room temperature calibration adjustment to improve accuracy
- 5-minute compressor delay protection to help prevent short cycling
- Universal sub-base and color-coded terminals for quick professional installation











