How do I get a wifi thermostat for a line-voltage electric heater?

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The relay has two ratings coil voltage and contact amperage/voltage.
The coil voltage has to be compatible with your control circuit
(thermostat side). The contact rating has to switch the current of
the heater (or higher) at some given voltage rating.

At minimum you need a single pole single throw relay normally open
(that is, it will call for heat when the coil is energized). Many
thermostats are designed to run on 24 Volts AC (coil voltage your
relay would need to be, along with a transformer to power it)

The 24 VAC coil rating is used in the states because it doesn't
require heavy wire with a 600 volt insulation rating the way
electrical code does. There will usually be a small 10 Volt-Ampere,
24 VAC transformer located on the heater, as a rule, to step down the
voltage for the control circuit (thermostat).

A 24VAC mechanical thermostat probably wouldn't survive switching
120/240 VAC for very long (if at all)....

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Heating or cooling room thermostat voltage levels & power sources: where does a wall thermostat get its electrical power & what voltage level is usually required. While most thermostats use a 24V DC circuit, some use different voltage levels and / or 120V AC is used by line voltage thermostats.

How do we know what kind of thermostat is installed and what voltage it requires? Where do we find the thermostat's power source how do we know if it's getting power? How do we diagnose and fix a blank thermostat display?

Page top photo: a basic room thermostat showing the red and white wires being switched by the thermostat and a place where it's easy to check for voltage at those terminals.

We also provide a MASTER INDEX to this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you...

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For anyone reading this page who thinks they’re about to get some really technical information on HVAC systems and their compatibility with various thermostats, I’m sorry to disappoint you. I don’t work in this industry, and I certainly don’t have the sort of knowledge a technician does.

However, since I have done my research regarding thermostats, I thought it would be prudent to at least pass on some of the information I’ve come across that’s really helped me. You see I thought it would be easy to find a model of thermostat to suit my needs and the needs of my HVAC system, however it transpires that the very first thing you must do is check what type of heating or cooling you have in your home.

Of course, most thermostats will work with different systems, but you just might end up with a thermostat that won’t work with your system at all, or if it does you might cause damage to your equipment and that will only lead to an expensive repair job.
So, there are...

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A Wi-Fi thermostat connects to your home's wireless Internet service and lets you remotely check and change the temperature in your home from an app on your smartphone or tablet. When Wi-Fi thermostats first came out, the buyers were mainly snowbirds who wanted an alert if their furnace conked out while they were down south. That's not the case anymore. In fact, Wi-Fi thermostats are quickly becoming standard equipment for new homes. If you're considering upgrading your thermostat to a high-tech Wi-Fi version, here's what you need to know.

By the DIY experts of The Family Handyman Magazine

You might also like: TBD

6 reasons you might want to get Wi-Fi thermostats

Is a Wi-Fi enabled thermostat right for you?

Travel If you live in a cold climate and travel, you should definitely get Wi-Fi thermostats to keep tabs on your furnace when you’re away. In cold weather, a furnace breakdown can endanger pets and plants and lead to frozen pipes and...
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ok i look at the picture you provide us ...

ok when you start installing the heater did you plan to install the termost at the same time ??? the thermoast is the simuir to like wall switch but if you did install the wire for the heater thermosast then you should have no troble to get it hook it up but here the quick rundown..

wire for heater from breaker box to heater there?

if so then where is the second wire go to ??? if not there stop right here and get back to fourm here .

if need the wire you will have to fish the wire in the wall to the junction box . and which way are you running the wire to ???

like example : from breaker to wall switch to heater??
or from breaker to heater to wall switch ??

there are few other options there . let us know what you set up

merci,...

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A line voltage thermostat is commonly used to control electric baseboard heaters or a direct-wired electric furnace. It works by turning on the power to the heating and cooling system when the thermostat detects the room temperature is no longer within a few degrees of the desired setting. The power supply, measured in volts, is switched directly on and off by the thermostat.

Thicker power wires are an identifying characteristic of a line voltage thermostat. It operates using a direct current of power and is typically seen in older buildings. Programmable, digital and non-digital thermostats are compatible with a line voltage system.

Some types of thermostats are designed for use with a particular range of line voltage systems. For example, a certain thermostat model may not be designed to work with a central heating and cooling system. Instead, it may be designed to work exclusively with electric baseboards or a floor heating system.

A programmable line...

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How do I know which model to buy?

Make sure that the model that you choose has WiFi capability. Ensure that your choice is right for your home’s cooling and heating systems. Always select a model that offers many different day programming options such as: 7-Day programming – Homeowners who have busy schedules find this option useful as it allows them multiple individual daily programs. 5-1-1-Day – This is a good option for homeowners who need separate programs for Saturdays and Sundays, as well as multiple weekday options. 5-2-Day – Homeowners who require separate programming for weekends and weekdays prefer this option. 1 Week – This option allows for numerous weekly programs.

Do Programmable WiFi Thermostats require an electrician to do the installations?

It’s always a good idea for a professional HVAC contractor to be consulted to clarify your needs; however, most models are designed to install easily with minimum effort and are usually regarded to be...

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When it comes the programmable thermostats there are two major types: Line voltage and low voltage programmable thermostats, it’s very important you know which type you need before you purchase a new thermostat.

A line voltage system uses direct current instead of only 24 volts, which is also known as a low voltage line. The direct current will be either 120 or 240 volt electrical line most commonly used for electric heaters or a direct-wired electric furnace.

Are you still confused? No problem, let me try to explain a little more: In the simplest of terms, a line voltage thermostat is connected to a two or three Romax wire that will be either 14, 12, 10 or 8 gauge in thickness. And low voltage thermostat will use 24v bell wire is much smaller is size so you will be able to tell very quickly if you are taking an old thermostat off.

To go into more detail if we start from your “fuse box or “circuit breaker panel” the electrical wire from the panel to your heater...

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This thermostat buying guide provides information that will assist you in selecting a thermostat that properly controls the type of HVAC system you have and has the performance features you want. Many thermostats are also called controls, since they do more than simply sense temperature and turn the system on or off in response. Controls are designed to optimize indoor comfort, convenience and energy efficiency. Here’s where we’re going in this thermostat control buying guide:

Part 1 is about thermostat compatibility with your systemPart 2 is about the features you might want and whether they’re worth the extra expensePart 3 is about popular traditional thermostat and WIFI smart thermostat reviews

Let’s do this!

Part 1: Thermostat Basics and Your HVAC System

Each thermostat is designed to work with a specific system type. There are several areas in which compatibility must be ensured or the thermostat won’t work or won’t allow you to get the best...

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