Mysa replaces your existing wall thermostat and is designed to work with any brand of electric baseboard heater, as long as the heating system is 120-240V and is rated to control 3800W max @ 240V / 1900W max @ 120V. For example, Mysa works with high-voltage heating system brands like:

Baseboard Heaters
  • Dimplex
  • Cadet
  • Stelpro

Fan-Forced Heaters
  • Cadet
  • King Electric
  • Stelpro

In-Ceiling Heaters
  • Flexwatt
  • Ducoterra
  • Comfort Cove

...and many others!

Mysa is a single-pole thermostat but can be used to replace a double-pole thermostat in certain applications. If you are unsure, please contact a qualified electrician to confirm that your desired installation is within national building and electrical codes.

Each Mysa is designed to work on its own — you can start with one thermostat and add more over time. To optimize your energy savings and comfort, we recommend starting with 3 thermostats in the rooms that matter most in your home.

Mysa Smart Thermostats are designed to help you reduce your monthly electricity costs by using home energy more efficiently (running your heaters as accurately and infrequently as possible).

The Mysa app’s smart features like Scheduling, Geofencing, and Eco-Mode help you optimize your comfort level while using less energy to heat your home.

Mysa is rated for controlling electric heating systems up to 3,800 watts. This allows you to connect multiple heaters to Mysa and allows for a number of customizations based on different-sized heaters.

Each Mysa Thermostat uses a tiny amount of data — approximately 0.5 MB — per day. While Mysa does not require any special routers and is designed to work with most household routers, it does require a unique 2.4ghz connection.

Please ensure that your router is able to operate a 2.4ghz network, and is not currently set to a merged network.

Mysa uses your data to enable energy-saving features such as Early On. Your location is required to enable Geofencing but is optional.

Respecting and protecting our customers’ data is our first priority.

Mysa will never share your personal data with other parties. We’ve passed CSA’s Cyber Security Audit for Data Storage and scored an A+ on their ‘Hacking Penetration’ testing, which means our cyber security is second-to-none. Please review our Technical Specification section for additional security information.

Mysa can be operated from 5℃/41℉ to 30℃/86℉. Mysa also has an Off Mode allowing the thermostat to completely turn off the heat.

Yes, you can control your preferred setpoint temperature from the thermostat’s faceplate. Adjusting the temperature manually will override your Schedule until the next set point change and will not interfere with any additional app settings!

Yes, you can use the Mysa app on your smartphone to control up to 50 Mysa thermostat, and each Mysa account can include up to 10 homes — that means you can use the app to control up to 50 thermostats with just one account!

We believe we’ve built a smart thermostat that will help you save by using home energy more efficiently.

If you are not satisfied with your energy savings after using your Mysa Smart Thermostat(s), you may return them for a full refund — risk-free satisfaction guaranteed. Learn more about Mysa’s 1-Year Energy Savings Guarantee.

If you are within the 30-day Risk-Free Return window and you purchased your Mysa from this website, please review our Refund Policy for next steps.

If you purchased the product from an authorized reseller, you must request a refund directly from the reseller. Returns and requests for refunds to re-sellers are subject to the reseller's return/refund policy, which may differ from Mysa's store policy.