STN855W
STN855W
ACiQ Programmable Thermostat
The STN855W is a versatile WiFi thermostat offering 7-day, 5/1/1 programmable, or non-programmable options. It features a temperature range of 32°F-99°F (1°C-40°C) and precise control from 44°F-90°F (7°C-32°C) with an accuracy of ±1°C. Powered by 24V, it comes in a compact design with dimensions of 120 x 98 x 28 mm, making it ideal for efficient and customizable temperature management.
01
FEATURES
- Wi-Fi Ready
- Heat Pump Capable
- Programmable
- Touchscreen
- Easy menu-driven programming
- White, blue, or green backlight settings
- Configurable with electric or gas setups
- Keypad lockout
- Heating and cooling setpoint limits
- Filter change indicator (can be toggled on/off)
- Works with Alexa
02
VIEW SPECS
- Model: STN855W
- Dual Compatibility: 24V and HA/HB non-polarity communication systems
- Control Switch: Works with single and two-stage heating, cooling, and heat pump systems with auxiliary/emergency heat
- Scheduling: 7-Day or 5/1/1 programmable scheduling
- 2 Heat / 2 Cool Conventional or 3 Heat / 2 Cool Heat Pump thermostat
- Temperature range: 32°F-99°F (1°C-40°C)
- Control temperature range: 44°F-90°F (7°C-32°C)
- Accurate temperature measurement: ±1°C (at 20°C)
- 24v power
- Compact design: (120 x 98 x 28 mm)
Industry Leading Technology
That’s Smarter and Easier
Simple
Simplified HVAC with easy installation, affordable systems, and top warranties.
Intelligent
Self-adjusting power output to achieve constant comfort at minimum cost.
Quiet
Near silent operation both indoors and outdoors to protect your peace and quiet as well as your comfort!











