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Netatmo Smart Thermostat for Individual Boiler, NTH01-EN-EC

£9.9£99Clearance
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It makes sense that the temperature in different parts of your home should be slightly different, depending on what you use them for. Take the bedroom and bathroom, for instance - you’re unlikely to heat them both to the same temperature.

The thermostat’s clear E Ink screen displays the current and set temperatures. Using E Ink means that this information is onscreen all of the time, using little power (the three AAA batteries should last one year). However, the display is hard to read in a dark room since it isn’t illuminated. Optimal thermal comfort thanks to the features offered by the Netatmo Smart Thermostat, such as Auto-Adapt, which works out when to turn on your heating by taking account of your home’s insulation as well as the outside temperature. From the app, you can override any set temperature for the period that you define. And there are two special modes that set a constant temperature until they’re turned off, or the timer you set runs out. Netatmo ships the Smart Radiator Valves with plenty of adaptors in the box, so you should have no problem fitting them to your radiators. It took me a matter of minutes to fit my test valves. Scheduling becomes more complicated when Smart Radiator Valves are involved. Netatmo applies one schedule to every room, setting the profiles you choose at the times you choose. You can adjust a profile’s temperature for each room, say having the Comfort mode set to 19C for your living room and 18C for your bedroom. This isn’t as flexible as being able to set a dedicated schedule for each room, as you can do with both Evohome and Tado.To aid with heating, the Netatmo Smart Thermostat also takes into account the local outdoor temperature, so that it knows when to turn on the heating: earlier, when it’s really cold; later, when it’s warmer. The temperature can be pulled from the internet, using your home’s location, although more accurate readings can be taken from a Netatmo Weather Station if you have one linked to the same account. Netatmo Smart Thermostat – Smart Radiator Valves While requiring an investment up front, smart thermostats increase your energy efficiency, allowing you to save on your home heating bills. That way, any smart thermostat you buy should soon pay for itself! Installation costs After one week of use the system will have a better understanding of your home and how it retains heat. Because the app has location data it can draw on local data for external temperature conditions, to get an understanding of insulation, heat retention, and heating time relative to that external temperature. Netatmo calls this PID, or Proportional-Integral-Derivative, which the app will alert you to being available - you can choose whether you want it activated or not. When making a temperature change, you can also adjust the slider to make the change last for a longer or shorter period.

The same goes for the living room and the laundry room - you’ll want to use the heating to ramp up the temperature in one, but there’s no need for the other to be quite so hot, given what you use it for! To save energy, you’ll probably want to set a schedule so each radiator only comes on at certain times of day. As Google Nest users in a previous property, the idea of Netatmo was appealing on account of its simplicity and lower price. For many users you'll be able to self-install the thermostat where your previous model once sat (without necessarily needing to open up your boiler at all), or sit it in whichever room you choose on its mobile stand. In short, hysteresis cuts the boiler off once your house is within the threshold of the set temperature (by default 0.2C). Even so, hot radiators can push your heating beyond the set point. PID is smarter, and learns how your home heats up and how long it takes, so it can cut off the heating at the right point so that your home doesn’t exceed the set temperature. PID constantly updates and learns, making it better over time. In my tests, my house barely exceeded the set 19C when PID was used.

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In addition, there are two special modes: Away and Frost-Guard. Both set a constant temperature until you switch them off. Away is set to 12C by default and should be used when you’re out, but want to stop your house from getting too cold. Frost-Guard is set to 7C, and is for use when you’re away for longer periods. You can override the temperature setting for both modes. Netatmo could make the available options a little easier to understand, though: hysteresis algorithm and proportional-integral-derivative (PID) algorithm are hardly descriptive. While the manual explains what each one does, they’re a bit wordy.

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