Will it work with your system?
Works well with
- Baseboard and wall heaters
- 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 King Electric ES230-R Line-Voltage Thermostat is a line-voltage for electric heat that runs at line voltage (240 V per the maker).
Its maker rates it for 5,280 W. At 240 V that covers heaters totalling about 5,280 watts (watts = amps × volts). Check your heaters' load.
It's single pole. Single-pole models break one leg; the heater stays connected to the other.
Connectivity: Wired, 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: a weight of 11.2 ounces and a digital.
Warranty, per the listing: 1-year limited warranty.
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 number | ES230-R | Retailer |
|---|---|---|
| Model name | MAX22 | Retailer |
| Works with | Push Button | Retailer |
| Features (seller) | Memory Backup for Power Outages | Retailer |
| Connectivity | Wired | Retailer |
| Power | Corded Electric | Retailer |
| Voltage | 240 V | Retailer |
| Display | Digital | Retailer |
| Mounting / installation | Wall Mount | Retailer |
| Max load | 5280 W | Retailer |
| Warranty | 1-year limited warranty. | Retailer |
| Product weight | 11.2 ounces | Retailer |
| Schedule | Non-Programmable | Retailer |
| Poles | Single pole | Retailer |
Strong points and weak points
Strong points
- Rated 5,280 W
- Single pole
- 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 King Electric ES230-R Line-Voltage Thermostat control?
Can the King Electric ES230-R Line-Voltage Thermostat run a furnace or heat pump?
Other line-voltage thermostats with similar wiring
Our take
A fit for baseboard and wall heaters.
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.
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