Floor heating ยท Mysa

Mysa IN-FLOOR V1-0 Floor Heating Thermostat

Floor heating, 240 V, 3,800 W

At a glance

A fit for electric floor heat.

Strong points
Rated 3,800 W.
Weak points
Household-voltage wiring.
Best match
Electric floor heat.
Connectivity
Wi-Fi
Schedule
Programmable
Display
LED
Power
Electricity,Electric
Voltage
240 V
Max load
3800 W
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Updated October 2026

Will it work with your system?

Works well with

  • Electric floor heat
  • Room-by-room electric heat

Check first if you have

  • Furnaces, boilers and heat pumps (24 V)
  • Loads above its rating

What it controls

The Mysa IN-FLOOR V1-0 Floor Heating Thermostat is a floor heating for electric heat that runs at line voltage (240 V per the maker).

Its maker rates it for 3,800 W. At 240 V that covers heaters totalling about 3,800 watts (watts = amps × volts). Check your heaters' load.

As a floor-heating thermostat it typically works with a floor sensor; the floor system's maker specifies which thermostats it supports, and that comes first.

Connectivity: Wi-Fi, so the schedule and setpoint can be changed from a phone.

Line voltage can kill: switch the breaker off and confirm it's dead before touching the wires, and use a licensed electrician if you're unsure. Line vs low voltage.

Also on the listing: dimensions of 0.78 in (D) x 3.03 in (W) x 4.56 in (H), a weight of 499 g and a led.

Compatibility and specs

These come from the maker's listing for this exact model; the source of each is marked. Anything the maker leaves out is marked not stated.

Model numberIN-FLOORRetailer
Model nameMysa Smart Thermostat for Electric In-Floor HeatingRetailer
Dimensions (seller)0.78"D x 3.03"W x 4.56"HRetailer
Works withAmazon Alexa, Android, Apple HomeKit, Google Assistant, iOSRetailer
Features (seller)Daylight Savings Time Ready, Lockable, Programmable, Temperature Display, Vacation ModeRetailer
ConnectivityWi-FiRetailer
PowerElectricity,ElectricRetailer
Voltage240 VRetailer
DisplayLEDRetailer
Mounting / installationWall MountRetailer
Max load3800 WRetailer
Product weight499 gRetailer
MaterialPlasticRetailer
Works with systemsworks with 120-240V electric in-floor heating systems and includes a built-in Class A GFCIRetailer
ScheduleProgrammableRetailer

Strong points and weak points

Strong points

  • Rated 3,800 W
  • Wi-Fi control
  • 240 V

Weak points

  • Household-voltage wiring
  • One thermostat per heater circuit

Wiring and install notes

  • Compatibility statements are the maker's own. Confirm with the maker's compatibility checker, turn the power off before wiring, and leave line-voltage and furnace work to a licensed electrician or HVAC technician.

Thermostats to compare it with

FAQ

How many heaters can the Mysa IN-FLOOR V1-0 Floor Heating Thermostat control?
As many as fit within its rating of 3,800 W: add the heaters' watts and divide by the voltage.
Can the Mysa IN-FLOOR V1-0 Floor Heating Thermostat run a furnace or heat pump?
No. It's a line-voltage thermostat for electric resistance heat; central systems use 24-volt thermostats.

Other line-voltage thermostats with similar wiring

All line-voltage thermostats in one grid

Our take

A fit for electric floor heat.

Where to get it

The link goes to this exact model's listing. Check that the box includes the trim plate or C-wire adapter you need, and confirm your wiring with the maker's compatibility checker before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure