Samsung SmartThings
Samsung air conditioners and heat pumps already talk to the SmartThings cloud, and so do the smart plugs linked to the same account. Elewatt uses that connection to heat or cool when electricity is cheap, coast when it is expensive, and switch plugs on in the cheapest hours — every 15 minutes, without you touching the app.
What you get
How it works
Elewatt classifies every 15-minute price slot as cheap or expensive using your price filter, or the cheapest third of the day when you have no filter. For an air conditioner you set a mode and temperature for each: for example heat to 22 °C in cheap hours and let the room coast at 18 °C, or switch off, when prices spike. For a plug the rule is simpler: on in cheap slots, off in expensive ones. Commands only go to SmartThings when the classification flips, which keeps well inside Samsung's API limits and means the unit is not nagged every quarter hour.
Plugs and relays, not only Samsung ones
Any device in your SmartThings account that exposes a switch and is not an air conditioner can be added: Samsung and Aeotec outlets, but also Meross, TP-Link Kasa and other plugs you have linked into SmartThings. Plugs that report an energy counter get measured savings in euros. Plugs without one still switch on schedule, but Elewatt will not invent a savings figure for them.
Set up in five steps
Around five minutes. You need a Samsung account with at least one air conditioner or plug already visible in the SmartThings app.
Connect your SmartThings account
Open Connections in Elewatt and press Connect on the Samsung SmartThings card. You sign in with your Samsung account on Samsung's own page and grant Elewatt permission to read and control devices. Nothing is copied or pasted, and you can revoke the grant in SmartThings at any time.
Add an air conditioner or a plug
On the Samsung page press the plus button and choose the Air conditioner or Plug tab. The picker lists the devices from your SmartThings account with the names you gave them. Plugs are marked kWh when they report energy and W when they only report power.
Choose what happens in cheap and expensive hours
For an air conditioner pick a mode and temperature for cheap hours, and another for expensive hours — Off is allowed. Pick a price filter to decide what counts as cheap, or leave it empty to run the cheapest third of the day. A plug only needs the filter.
Switch on automation
Flip the AUTO toggle on the device row. From the next 15-minute tick Elewatt keeps the device on the target for the current price slot. If you change something by hand in the SmartThings app, Elewatt puts it back on the next tick while automation is on.
Watch the schedule and the savings
The chart below the controls shows today's and tomorrow's prices with the cheap slots highlighted, and the live panel shows room temperature, setpoint and mode straight from the unit. Metered plugs fill in the savings tile as the energy counter moves.
Let your Samsung heat when power is cheap
Free to start. One device is included on the Free plan, and the SmartThings connection takes a minute.