SaveElectro runs your water heater, electric heating and heat pump in the cheapest hours of the day, and keeps every room at the temperature you choose.
You keep your electricity company. Heaters keep their own thermostats. You can switch any device on or off yourself at any time.
On an exchange-price contract, the same kilowatt-hour can cost many times more at 18:00 than at 03:00. A water heater or a convector doesn't know that: it heats whenever its thermostat asks — often right in the morning or evening peak.
A tank of hot water and a well-heated house store warmth for hours. SaveElectro uses that: it heats when electricity is cheap and lets the stored heat carry you through the expensive hours.
Every heater, what it is doing now and why, and what happens next.
You choose a price limit; SaveElectro heats below it and waits above it. The heater's own thermostat still decides when the water is hot enough.
With a room sensor, rooms never drop below your minimum — even in expensive hours — and cheap hours never overheat them past your maximum.
For ground-source and air-to-water pumps with an SG Ready input. SaveElectro never cuts the pump's power; it sends the standard SG Ready signal and follows the standard's limits.
Once the next day's prices are published, you see exactly when each heater will run — and change it if you want.
One tap switches any heater on or off, or back to automatic. The override stays until you release it.
If a heater fails or a breaker trips, no thermostat can help. Set a minimum on the room sensor and you get an alert when the room drops below it, and family or a caretaker can too.
If the internet or SaveElectro stops, heaters return to their normal operation on their own within 15 minutes.
A Shelly relay per heater or heating circuit, usually with a contactor, fitted by an electrician. See the Shelly relay guide.
A ground-source or air-to-water heat pump with an SG Ready input, and a Shelly Pro 2 (two potential-free contacts) connected by an installer. Air-to-air heat pumps are not supported.
A temperature probe on a Shelly Add-on, or a Shelly H&T sensor in the room. Put the H&T on USB power: it then reports every 5 minutes; on batteries it reports much less often. Several convectors can share one sensor.
Heating in cheap hours saves money on an exchange-price (spot) contract. On a fixed price, the timing makes no difference to your bill.
The water heater keeps its own thermostat, so the water is always heated to the same temperature — just at cheaper times. If you need it now, one tap on On heats it straight away.
Not below your minimum. With a room sensor, SaveElectro heats whenever a room drops below the minimum you set, whatever the price. Without a sensor, you can turn on a safety net so heating never stays off for longer than you allow.
SaveElectro never switches a heat pump's power. It only sends the SG Ready signal, which the pump is designed to receive, and it keeps to the standard's limits: a pause lasts at most two hours and happens at most three times a day.
That depends on your prices, your heaters and how you live, so we don't promise a percentage. SaveElectro shows the average price each heater actually paid, so you can see the difference yourself.
It's the simplest place to begin: one relay, one setting, and it runs in the cheapest hours from the first night.