T21 Programmable 2 Heat/1 Cool Thermostat for Home, Digital Household Thermostat Compatible with Heat Pump with Auxiliary Heating and Conventional 2H/1C Multi-Stage System(C-Wire Recommended)
Price: $34.99 - $29.99
(as of Aug 03, 2025 11:04:32 UTC – Details)
Product Description
Weekly Cycle Mode Personalized Programming
Whether it’s the busy rhythm of weekdays or the leisurely weekend, T21 thermostat can accurately match your schedule, ensuring that the heating arrangement conforms to your living patterns. It is both labor-saving.
Wiring Diagram
EASY DIY , Effortless Assembly
Designed with user-friendliness in mind, T21 programmable thermostat is incredibly easy to assemble and use. Whether you’re a seasoned DIY enthusiast or a first-time installer, you’ll find the process straightforward and hassle-free.
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Customer Reviews
4.5 out of 5 stars 9
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Price
$29.99$29.99
$28.99$28.99
$69.99$69.99
$25.99$25.99
System Type
2H/1C
1H/1C
3H/2C
1H/1C
Power Source
24VAC
24VAC/ Batteries
24VAC
24VAC / Batteries
WIFI
✘
✘
✔
✘
Control Method
Manual
Manual
APP
Manual
Display
LCD
LCD
LED
LCD
【Wide Compatibility】This programmable thermostat supports conventional multi-stage systems and heat pump systems up to (2H/1C) (C-wire required), and is also compatible with single-stage heating and cooling systems, heat pumps without auxiliary heating, hydronic heating, boilers, gas fireplaces (24V), and 750 millivolt systems. Works seamlessly with gas, electric, and oil furnaces. Note: Before making a purchase, please ensure that the product description match your requirements.
【5+2 Programmable】Easily customize your weekly schedule with the 5+2 programming feature. Set different heating or cooling settings for weekdays and weekends to match your lifestyle and save energy effortlessly. Perfect for maintaining comfort and efficiency throughout the weeks.
【User-Friendly Appearance Design】The cover of household thermostat cleverly conceals and protects some of the setting buttons and the battery slot, effectively preventing accidental program activation and related safety issues. It also features an easy-to-read backlight LCD screen with options to display temperatures in Fahrenheit or Celsius, making it simple and adaptable for all users.
【Memory Retention】This home thermostat preserves your custom settings during power outages, ensuring consistent comfort without the need for reprogramming.
【Easy DIY Installation】This digital thermostat is designed for quick, hassle-free setup. A detailed manual ensures smooth installation, making it perfect for DIY users upgrading the home system.
【Dual Power Options】This thermostat for house offers dual power options, operating via 24VAC or 2 size AA batteries, and requires no C-wire when battery-powered. (For optimal performance and stability in 2H/1C systems, connecting the C-wire is highly recommended. This also eliminates the need for frequent battery changes.)
