Best App Household Thermostats in 2026

EASY OPERATION AND INTUITIVE. Bright, easy-to-read touchscreen makes for simple operation.

COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup. Does NOT work with electric baseboard heat (120-240V). C-Wire required.

ENERGY STAR certified. Help save energy, track your heating and cooling with monthly energy reports and get personalized tips on reducing energy use.

Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter. Our Air products and services work with you and for you, supporting and creating more comfortable surroundings

Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.

SMART HOME INTEGRATION. The Wi-Fi 7-Day is compatible with voice assistant devices like Amazon Alexa, Google Assistant, Microsoft Cortana, and more.

THERMOSTAT THAT FITS YOUR LIFE. 7-day, 4 periods per day, flexible programming lets you sync your comfort with your schedule.

EASY OPERATION AND INTUITIVE. Big, backlit digital display and easy controls make for a user-friendly experience.

EASY-TO-USE-APP. Choose from the Total Connect Comfort app or the Resideo app to control your Wi-Fi thermostat anytime, anywhere.

COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup. Does NOT work with electric baseboard heat (120-240V). C-Wire required.

Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present. Ability to view local weather from web portal or app

Features auto changeover between heat and cool and reminder alerts for low batteries and filter changes.

Program is retained in memory in the event of a power outage so you can be confident your comfort stays intact.

The UWP mounting system, included mounting hardware, and quick install guide can have your thermostat up and running quickly.

Real-time clock automatically adjusts for daylight savings time

Compatible with: forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup.

Does NOT work with electric baseboard heat (120-240V).

MULTI-ROOM FOCUS. Add Smart Room Sensors to focus the temperature on multiple rooms for comfort where it matters to you. (Sensors sold separately). Wire Configuration - 4-Wire. Supports Wi-Fi 802.11 B/G/N 2.4 and 5 GHz.

COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup. Does NOT work with electric baseboard heat (120-240V). C-Wire Required.

SMARTER, SIMPLER SETUP. Everything you need comes in the box, including a power adapter so that the T9 works in most homes. The T9 intuitively identifies your home’s heating and cooling type, making it easy to do it yourself.

Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter.

Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.

This 4-wire thermostat provides double-line break—positive OFF for easy installation

Temperature Range: 40°F to 80°F (4°C to 27°C). Heat Only

Power: 2640W @ 120 Vac, 22A resistive; 5280W @ 240 Vac, 22A resistive; 5263W @ 277 Vac, 19A resistive

Can be used to control a single electric baseboard heater, or can be used to control two or more electric heaters provided the combined load does not exceed 5280 W. No minimum load required

If this control is replacing a control that contains mercury in a sealed tube, do not place you old control in the trash. Dispose of properly. Contact you local waste management authority for instruction regarding recycling and the proper disposal of a old control

Backlit touchscreen display shows current room temperature and set point temperature simultaneously.

Simple and straight forward to install and use. The thermostat also has a real-time clock so it will automatically adjust for Daylight Savings Time.

Smart Response Technology allows the thermostat to learn how long the furnace and air conditioner take to reach programmed temperature settings, so you're comfortable at the time you expect.

Auto changeover is helpful in climates where both air conditioning and heating are used on the same day. When the system is set to Auto, the thermostat automatically selects heating or cooling depending on the indoor temperature so you can always be comfortable.

To protect the system and your compressor from damage, this thermostat contains a setting that forces the compressor to wait a few minutes before restarting. If activated during installation, the screen will also display an alert when it's time to replace your filter and alert you of low batteries.

Battery-powered or option to hard-wire.

Compatible with- single stage heating and cooling, multistage heating and cooling, heating only, cooling only, furnace (warm air), central air conditioning, heat pump without auxiliary heat, heat pump with auxiliary heat, hot water, steam or gravity, 750 millivolt, and gas fireplaces.

EASY INSTALLATION: Easy to install yourself and works with many heating/cooling systems, plus heat pumps without auxiliary heat

REMINDERS: Built-in battery change and filter change reminders

RETAINS PROGRAMMING: Retains programmed memory in event of power outage

COMPATIBLE WITH: Gas, oil or electric furnace, Central air conditioner, Hot water system with or without pump, Millivolt system, Central heating and cooling system, Heat pump without auxiliary/backup heat.

CANNOT be used on heat pumps with backup heat, multistage systems, radiant or line voltage systems.

MULTI-ROOM FOCUS. Don’t be forced to choose one room over another, the T9 Smart Thermostat can handle multiple rooms to focus on (requires sensors).

CONTROL IT YOUR WAY. Control the T9 using the Resideo app or through Amazon Alexa, Apple HomeKit, Google Assistant, and more.

COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup. Does NOT work with electric baseboard heat (120-240V). C-Wire required.

DO IT YOURSELF SIMPLE INSTALL. With guided installation setup couldn’t be simpler. The included power adapter is an easy-to-install, low-voltage alternative to a C-wire, so the thermostat is compatible with most homes.

Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter.

Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.

Uwp mounting system simplifies installation with uniform wiring and fast, easy future product upgrades

Includes change reminders for air filter replacement and low battery signals. In the event of a power outage your program is retained in memory

For added convenience, reminders to change air filters appear on the screen.

The advanced design of this thermostat provides maximum comfort by sensing whether your home needs heating or cooling with the Smart Response Learning technology.

Learns your heating/cooling cycle times to deliver the right temperature when you want it.

Choice of battery or hard-wire operation wired power source to fit your home.

Your settings stay saved with the permanent day and time backup in the event of a power outage.

Compatible with- single stage heating and cooling, multistage heating and cooling, heating only, cooling only, furnace (warm air), central air conditioning, heat pump without auxiliary heat, heat pump with auxiliary heat, hot water, steam or gravity, 750 millivolt, and gas fireplaces.

Precise temperature control of and/- 1degreeF.

Simple, worry-free operation

Dual temperature scale

Easy to install and use

Mercury Free

Auto Home and Away Mode. Enjoy ideal temperatures at home, then save when away.

ENERGY STAR certified. Help save energy, track your heating and cooling with monthly energy reports and get personalized tips on reducing energy use.

C-WIRE POWER ADAPTER REQUIRED: Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter.

Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.

C-WIRE POWER ADAPTER REQUIRED: Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter.

SIMPLE INSTALL FOR A DIY PROJECT. The Wi-Fi 7-Day Programmable Thermostat is easy to configure and install yourself.

C-WIRE POWER ADAPTER REQUIRED: Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter.

COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup. Does NOT work with electric baseboard heat (120-240V). C-Wire required.

Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.

Auto change from heat to cool

YOUR SCHEDULE. YOUR WAY. Flexible programming options for your schedule or utility company’s peak rate pricing.

C-WIRE POWER ADAPTER REQUIRED: Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter.

COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup. Does NOT work with electric baseboard heat (120-240V). C-Wire required.

Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.

Auto change from heat to cool

Includes change reminders for air filters and low batteries