Best Line Voltage Programmable Thermostats in 2025

CUSTOMIZABLE COLOR SCREEN: Easily change the high-definition display of the Wi-Fi thermostat to any color you choose.

ON-SCREEN COMFORT INFORMATION: See indoor and outdoor temperature and humidity information right on the home screen, plus daily weather forecast available on the smart thermostat.

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

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.

Does Not Work with Aux Heat Pump and Multi-Stage Systems, Does Not Work RV, Does Not Work 120/240V Electric Baseboard / Line Volt.

Very Suitable for Middle-Aged and Elderly People, Easy-to-read Digital 4.5 sq. in.

Display with Large Characters and Blue Backlight Big Separate Buttons for Easy Setting

Separate Heating and Cooling Swing (Cycle Rate) _ Low Battery Indicator

Room Temperature Calibration Adjustment _ 5 Minute Compressor Delay Protection (Selectable on or off)

Precise Temperature Control with +/- 1 Degree in Fahrenheit and Celsius for Ultimate Consistent Control.

Friendly Service: 2-year Worry-Free Warranty and 24h Customer Service,

Separate programs for heating and cooling. Not Compatible With-Multi-stage heat pumps, Multi-stage gas or oil furnaces, 3 wire hydronic systems,120V/240 line voltage systems (without transformers)

Keyboard lockout.Temp control 45° F to 90° F (7° to 32° C)

TEMPERATURE LIMITS: Stay in your comfort zone with adjustable heating and cooling temperature limits

YOUR WEEK YOUR WAY: Enjoy 7-day or 5/2-day temperature programming that fits your schedule

Easy to read and use: 5.0 sq. inch digital display with large characters and green backlight. separate buttons for easy setpoint temperature, very suitable for middle-aged and elderly people to use.

Upgrade function: The thermostat with humidity and temperature monitor to ensure you’re always aware of changes in your home environment.

It gives precise temperature control with +/- 1 degree in Fahrenheit and Celsius for ultimate consistent control to keep you comfortable.

Easy installation and the battery is easy to replace, with dual powered by 24VAC power or 2*AAA batteries, C-wire is not required. built-in low battery reminder, compressor delay protection and more.

Please contact us at once if any quality problem, come with 2-years warranty and 24h customer service.

Includes 4 Event/7 Day Programmable Thermostat with Code-Required GFCI Protection – Handles 120/240VAC and switches up to 15AMPS. Thermostat offers built-in ambient air sensor and included in-floor temperature sensor.

Embedded heated floor system – Embed the Heatwave system in a cement-based compound to heat under tile, laminate, plank, carpet, or floating floors.

Heatwave floor heating systems are available in 120 or 240 volts, cables or mats. Visit amazon.com/heatwave for the complete Heatwave product line.

Heatwave radiant floor heating systems offers US-based Technical, Installation, and Sales Support. Every kit has an easy-to-read and comprehensive installation manual to help design and install your new Heatwave heated floor system.

ETL Listed for US & Canada – Listed & Safe for wet locations - Limited Lifetime Warranty by an over 20 Year Trusted USA Manufacturer

Heatwave is manufactured by Heatizon Systems, based in Utah, manufacturing electric radiant heating products for over 25 years.

Separate programs for weekdays and weekends

Front battery access

Low-battery indicator for uninterrupted reliability and Positive off switch

Early Start function ensures programmed temperature is reached by programmed time

Temporary bypass enables temperature override without changing programming

Smart Integrations — Mysa works with Alexa, Google Assistant, and Apple HomeKit. Stay cozy and connected with Mysa.

Use the app to set a schedule for your thermostat in less than a minute.

Quick Install — Mysa installs easily in 15 minutes or less with step-by-step online guides and videos.

Adjust your home heating from anywhere on your Android or iOS device.

DUAL VOLTAGE - The SIGNATURE thermostat features dual voltage compatibility (120V & 240V), a physical on/off switch, and has built-in Class A GFCI (Ground Fault Circuit Interrupter) protection. The GFCI protects against risks of electrocution caused by a current leakage.

TOP OF THE LINE - High-end design featuring high gloss borderless acrylic frame. 3-year manufacturer’s warranty.

Temporary bypass enables temperature override without changing programming

Battery-free backup means no re-programming thermostat after power outage

5-1-1 day programmable, intuitive wake, leave, return, sleep programming icons. ( Notice; Press the Hold button to easily maintain the temperature, to control the non-programmable mode ).

Accurate temperature control of +/-1-Degree F for consistent comfort, Room temperature display range: 41°F to 95°F, Temperature control range: 44°F to 90°F.

Support a heat or cool swing set up (0.2°F to 2°F), which will either prolong or shorten the temperature open time. make comfortable temperatures to reduce energy usage, savings on annual heating and cooling costs.

Room temperature calibration adjustment, and 5 minute compressor delay protection (Selectable on or off), with air filter change reminder and low battery indicator available.

4.5 sq. inch display with white backlight, easy-to see and read. large, clear backlit digital display, very suitable for middle-aged and elderly people.

Dual-powered (battery and/or hardwire 24Vac power), easy access battery compartment.

Friendly service: 2-year worry-free warranty and 24h customer servic.

On-screen heating power indicator gives at-a-glance verification of power being used.

2-wire non-polarized connection means fast, hassle-free installation.

Early Start function ensures programmed temperature is reached by programmed time.

TRIAC switching allows for 100% silent operation and eliminates temperature swings making it ideal for any room, including bedrooms.

Temporary bypass enables temperature override without changing programming.

Battery-free backup means no re-programming your schedule after power outage.

【Multiple Safety Production】 The casing of the plug-in thermostat is made of flame retardant PC material, 3-Prong socket with grounded terminal, max load current up to 15A, over high and low-temperature and sensor failure alarms make it safe and reliable.

【Wide Applications】 The smart outlet thermostat is widely used for space heater, portable heater, wall panel heater, oil-filled radiator, electric fireplace heater, evaporative cooler, swamp cooler, attic fan, window air conditioner, etc.

ELEVATED CLIMATE CONTROL: Create advanced automations by pairing the Stelpro KI with other Z-Wave devices. Trigger the heating on/off with a door/window sensor, temperature sensor, motion sensor, etc.

CERTIFIED QUALITY: This thermostat is Z-Wave Plus and UL certified. Made in Canada. Works with SmartThings, Vera, HomeSeer, Nexia and Wink.

(Ambient, Floor, or Ambient with Floor temperature limits)

Easy to intall and program. For central Air conditioning and gas, electric or oil furnaces

Runs on batteries or 24 Volt line power. Low battery indicator if running on Batteries. Will not work with electric baseboard heaters

Simple to use twist dial to adjust your rooms to a comfortable level

Works with 120/240 or 208 electric baseboard and wall heaters

Temperature Range (F): 50°-90°F

User Interface: Mechanical

Easy to read and use: 5.0 sq. inch digital display with large characters and green backlight. separate buttons for easy setpoint temperature, very suitable for middle-aged and elderly people to use.

Upgrade function: The thermostat with humidity and temperature monitor to ensure you’re always aware of changes in your home environment.

It gives precise temperature control with +/- 1 degree in Fahrenheit and Celsius for ultimate consistent control to keep you comfortable.

Easy installation and the battery is easy to replace, with dual powered by 24VAC power or 2*AAA batteries, C-wire is not required. built-in low battery reminder, compressor delay protection and more.

Please contact us at once if any quality problem, come with 2-years warranty and 24h customer service.

It provides energy-efficient operation of power attic ventilators and the temperature ranges from 50°F to 120°F.

PROMISE - We prioritize our customer satisfaction; For any reason, you're not completely satisfied, you can ask for a replacement or full refund; No questions asked; Enjoy risk-free purchases

Country Of Origin: China

Fits either end of heater

Use only on Cadet built in baseboard heaters

NEMA 4X, N.E.C. Article 547

SPDT

SHIPS DIRECTLY FROM MANUFACTURER

Multi-Volt Rated 120/208/240V

Over-the-Air (OTA) firmware upgradeable

Temperature Range 41º - 90ºF (5º - 32ºC)

User Defined Max Temperature Lock

Program 4 or 6 Time Periods Per Day For Maximum Flexibility

Electronic Sensing For Accurate Temperature Control (±1ºF)

For Use On Baseboard, Fan Forced & Radiant Electric Heaters

Package Dimensions: 7.3 L x 11.9 H x 7.9 W (centimeters)

Contains No Mercury

Clean Attractive Design

Separate programs for weekdays and weekends

Vacation Hold

DESIGNED FOR SAFETY: Positive-off switch ensures system shutdown.

SYSTEM SHUTOFF CONTROL: This double-pole, single-throw (DPST) thermostat has a positive “OFF” position.