Summary#
The Mysa Smart Thermostat is a WiFi thermostat built specifically for 120V-240V electric baseboard, fan-forced, and convector heaters. It adds 7-day scheduling, geofencing, energy reports, and HomeKit, Alexa, and Google control to old dumb heaters, with claimed savings up to 26%.
At a Glance#
Product : Mysa Smart Thermostat for Electric Baseboard Heaters (V2)
Brand : Mysa
Best For : Homeowners and renters with electric baseboard, fan-forced, or convector heat who want smart scheduling and energy tracking
Protocol : WiFi 2.4GHz + Bluetooth LE (HomeKit, Alexa, Google Home)
Buy Now : View on Amazon
Key Highlights:
- Line-voltage design handles 120V-240V heaters up to 16 amps that standard smart thermostats can't control
- Native Apple HomeKit, Amazon Alexa, and Google Home support for voice and automation
- 7-day scheduling plus geofencing automatically lowers heat when you leave
- Built-in current and voltage sensors give real per-room energy monitoring
- Manufacturer claims up to 26% savings on electric heating costs
Who Should Buy This#
The Mysa hits a sweet spot for people stuck with electric baseboard heat who thought smart thermostats weren't an option. Most popular smart thermostats only work with central, low-voltage HVAC systems. Mysa is engineered for high-voltage resistive heat, delivering scheduling, remote control, and energy insights that generic line-voltage dial thermostats simply can't.
Perfect for:
- Apartment and condo owners who heat with baseboards and want to stop paying to warm empty rooms all day
- Cold-climate homeowners who need per-room temperature control to keep bedrooms cool and living spaces warm on a schedule
- Smart-home enthusiasts who want their heaters inside HomeKit, Alexa, or Google routines alongside lights and locks
- Budget-minded renters looking to cut electric heating bills without replacing the heaters themselves
Design & Build Quality#
The Mysa is a clean white square with a backlit LED touch display that lights up when you approach, thanks to a built-in proximity sensor. At 5.1 inches tall and 3.5 inches wide, it covers the footprint of an old thermostat and mounts into a standard single-gang electrical box. The minimalist face shows the current temperature and disappears into a wall far more gracefully than the beige mechanical dials it replaces.
Touch buttons handle up and down temperature adjustments directly on the unit, so the thermostat still works even if your WiFi drops or your phone is dead. It comes in white or black to match either light or dark walls.
Key Features#
Built for Electric Baseboard Heat#
This is the headline feature: the Mysa is a line-voltage thermostat, not a low-voltage one. It directly switches 120V, 208V, or 240V power to your heater, handling loads up to 16 amps, which works out to 1,900 watts at 120V or 3,800 watts at 240V. It replaces most single-pole and double-pole baseboard thermostats.
That means it works with electric baseboard, fan-forced, and convector heaters, the exact systems that Nest and ecobee cannot control. If you have baseboards, this is one of the very few genuinely smart options available.
Scheduling and Geofencing That Cut Bills#
You build a 7-day schedule in the app, setting different temperatures for morning, day, evening, and night in each room. Layer geofencing on top and the Mysa drops the heat automatically when your phone leaves the house, then warms the room back up before you return.
For baseboard heat, which is expensive to run around the clock, this is where the savings live. Mysa claims up to 26% off heating costs. Real savings depend on your rates and habits, but even trimming overnight and away-from-home hours adds up fast across a winter.
Real Energy Monitoring, Not Guesswork#
Because the Mysa has built-in current and voltage sensors, it measures actual electricity use at each heater rather than estimating. The app delivers real-time usage and a monthly energy report per room, so you can see exactly which heater is driving your bill.
That visibility turns vague "my heating is expensive" frustration into specific action. You might discover one bedroom heater running far more than expected and fix the schedule in seconds. Track your usage anytime: View on Amazon
Full Smart-Home Integration#
The Mysa works natively with Apple HomeKit, Amazon Alexa, and Google Home. You can raise the temperature by voice, include heaters in scenes like "Good Night," and automate them alongside lights, locks, and sensors. It connects over 2.4GHz WiFi with Bluetooth LE for setup.
Multi-home management and shared app access mean couples, families, or a landlord managing multiple units can all control the same thermostats without friction.
Technical Specifications#
Voltage Compatibility : 120V, 208V, and 240V AC line voltage
Maximum Load : 16 amps (1,900W at 120V, 3,800W at 240V)
Minimum Load : 250W
Heater Types : Electric baseboard, fan-forced, and convector heaters
Wiring : Requires neutral or L2 wire connection; replaces single-pole and double-pole thermostats
Display : Backlit LED with touch controls
Connectivity : WiFi 2.4GHz (802.11 b/g/n) plus Bluetooth LE
Smart Platforms : Apple HomeKit, Amazon Alexa, Google Home
Sensors : Temperature (±0.3°C), humidity (±2%), current, voltage, light, and proximity
Dimensions : 5.1 x 3.5 x 0.8 inches (fits standard single-gang box)
Colors : White or black
Warranty : 5-year manufacturer warranty
Pros & Cons#
Pros:
- Purpose-built for 120V-240V electric baseboard, fan-forced, and convector heaters that most smart thermostats can't touch
- Works natively with Apple HomeKit, Amazon Alexa, and Google Home for voice and automation control
- 7-day scheduling plus geofencing automatically drops heat when you leave and warms up before you return
- Built-in current and voltage sensors deliver real per-room energy monitoring and monthly reports
- Backlit LED touch display looks clean on the wall and fits a standard single-gang box
- Manufacturer claims up to 26% heating savings, backed by a 5-year warranty
Cons:
- Requires a neutral or L2 wire connection, so very old two-wire installs may need an electrician
- One thermostat controls one heater circuit, so whole-home coverage means buying several units
- 2.4GHz WiFi only, no 5GHz band support
- Handles resistive electric heat only, not central HVAC, gas furnaces, or heat pumps
Final Verdict#
Buy it. If you heat with electric baseboards, the Mysa is the rare smart thermostat actually engineered for line-voltage heat, and it delivers the scheduling, energy tracking, and smart-home control that make those old heaters finally efficient.
Our recommendation: Start with the rooms you use most, like bedrooms and the living room, where scheduling savings are largest, then add units as budget allows. Check current availability: View on Amazon