Day & Night Thermostats

Day & Night heating and cooling systems.

When you choose Day & Night® heating and cooling equipment, it means your home comfort is backed by superior engineering and quality manufacturing so you can enjoy more important things. Each unit is 100% run tested, and we design our products to give you the best in quality, energy efficiency and reliability. We take pride in delivering high efficiency and innovative design that exceeds your expectations for comfort every hour, every season.

Day & Night

Ion™ System Control (SYST0101CW)

Don’t call it a thermostat -- mere thermostats simply don’t offer all of the features and functionality of the Ion™ System Control. Offering full command over a communicating comfort system, including temperature, humidity, ventilation, comfort scheduling, energy management and more, this is our most fully-featured control. Anywhere in the connected world, you are just a touch or a tap away from full system control with an internet-enabled device.

Features & Benefits

  • High resolution, smartphone-like touchscreen
  • Wi-Fi® enabled for remote access and control
  • Pair with our communicating, modulating gas furnace; variable-speed fan coil; inverter-driven outdoor units; and zoning system for a complete Ion™ Comfort System
  • Capable of controlling temperatures and fan speeds in up to eight zones
  • Real-time energy use tracking
  • Local weather 5-day forecast
  • Humidity control for enhanced comfort
  • Dual fuel system management capable
  • Auto changeover between heating and cooling
  • Four levels of "constant ON" fan speeds
  • 7-day programming with temperature control throughout the day and week (wake, away, home, sleep)
  • Advanced smart setback for optimal energy savings during "away" and ramp up periods
  • One-button Touch-N-Go® quick-settings-change feature
  • Simple vacation programming controls temperature and humidity
  • System maintenance reminders
  • 10-Year No Hassle Replacement™ Limited Warranty+
  • 10-year parts limited warranty±

  • * Wi-Fi® is a registered trademark of the WiFi Alliance Corporation.
  • + No Hassle Replacement™ Limited Warranty: If control fails due to defect during the applicable No Hassle Replacement limited warranty time period, a one-time replacement with a comparable control will be provided.
  • ± 10-Year Parts Limited Warranty: Timely registration required for 10-year parts limited warranty. Limited warranty period is 5 years if not registered within 90 days of installation. Jurisdictions where warranty benefits cannot be conditioned on registration will receive the registered limited warranty periods. Please see warranty certificate for further details and restrictions.

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Day & Night

Observer® Communicating Wall Control with Wi-Fi® Capability (TSTAT0201CW)

Take complete control of the comfort in your home with our Observer® communicating wall control. It offers Wi-Fi® capability for remote access, and is capable of controlling up to six zones in your home and customization of temperatures seven days a week. The Smart Recovery feature adjusts zones to your customized comfort levels throughout the day and week by gradually and efficiently adjusting to customized temperature. The control signals when it’s time for maintenance or filter changes, and provides on-screen diagnostics to simplify service calls. It’s technology and efficiency that works seamlessly with Observer communicating heating and cooling products.

Wi-Fi® Access
The Observer Communicating Wall Control with Wi-Fi® access provides a versatile and convenient way to control your home comfort. Simply connect to your existing Internet access and log on to the easy-to-use, personalized Web portal that displays just like the control to adjust your comfort from your computer or mobile device.

Zoning Capable
The Observer Communicating Wall Control with zoning capabilities allows you to control the comfort in up to six zones in your home. Customize your zone names and schedules to easily reference and make changes to daily temperatures. And with Smart Recovery, your system adjusts zones to your scheduled comfort levels throughout the day and week.

Features & Benefits

  • Advanced touchscreen technology
  • Remote access with Wi-Fi® capability*
  • Color screen and graphics
  • Capable of controlling temperatures and fan speeds in up to six zones
  • Compact and modern design
  • Dual fuel system management capable
  • 7-day temperature control throughout the day and week
  • Add Smart Recovery for comfort and economy
  • Easy-to-use functions
  • On-screen system diagnostics when installed as part of a complete Observer communicating system
  • Universal control that works with all systems
  • Humidity control
  • Constant ON fan options
  • Auto changeover between heating and cooling
  • Advanced system diagnostics intelligence capable
  • Lighted display
  • Four-wire installation (plus daughter board option)
  • Four-stage heat / two-stage cool

  • * Wi-Fi® is a registered trademark of the WiFi Alliance Corporation.

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Day & Night

Programmable Thermostat with Humidity Control (TSTAT0408)

Enjoy the comfort of your home with our programmable thermostat that can enhance energy efficiency with humidity control during sticky summer months and 7-day temperature scheduling. If you have a heat pump and furnace as part of your home comfort system, the thermostat allows dual fuel management to switch from electric operation to gas heating when needed.

Features & Benefits

  • Humidity control
  • Dual fuel system management capable
  • 7-day temperature control throughout the week
  • Easy-to-use functions
  • Constant ON fan options
  • Auto changeover between heating and cooling
  • Lighted display
  • Four-wire installation (plus daughter board option)
  • Four-stage heat / two-stage cool

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Day & Night

Programmable Thermostat (TSTAT0406)

Programming your home comfort is a breeze with the Heil programmable thermostat that offers 7-day temperature control, and heating- and cooling-stage capable for customized comfort. It can also manage dual fuel heating and features auto changeover between heating and cooling for a thermostat that's easy and convenient.

Features & Benefits

  • Dual fuel system management capable
  • 7-day temperature control throughout the week
  • Easy-to-use functions
  • Constant ON fan options
  • Auto changeover between heating and cooling
  • Lighted display
  • Four-wire installation (plus daughter board option)
  • Four-stage heat / two-stage cool

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