Drayton Wiser Smart Thermostat Dual Zone Heating and Hot Water Control - Works with Amazon Alexa, Google Home, IFTTT

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Comfort Mode is there to make sure that your home hits the target temperature at the set point rather than turning the heating on at that point. In other words, if you get up at 7:30am and set a schedule to have your heating at 18°C at this time, your house will be warm when you wake up. Wiser allows you to build up your heating system as you go. Add smart plugs and radiator thermostats as required. By creating more independent heating zones, you can optimise your comfort and save energy.

The Insights tab includes information on how much energy you’ve saved with Eco mode enabled, while also presenting a ‘Heat Report’ that details how long and to what temperature over the past day, week, and month your rooms have been heated. We did notice a slight delay of around 10 seconds to one minute between boosting the heating from both the radiator thermostat or the app and the boiler springing into action. The further away from the Heat Hub the thermostat is, the longer the delay. Initially, we also struggled to get the radiator thermostat in the room furthest from the Heat Hub to remain connected to the system at all times. It would often drop the signal, meaning we were unable to control it via the app. However, after installing an optional Wiser Smart Plug – which also doubles as a range extender for the system – in a room between the Heat Hub and the troublesome radiator thermostat, connection issues were no longer a problem. Drayton Wiser may be functional, but its plain all-white plastic design certainly isn’t stylish. If you prefer gadgets that make a design statement, this isn’t the smart thermostat for you. There’s no difference in how the devices work, and Drayton provides all the fixings in the box to connect its TRVs to any radiator with an existing manual TRV. If your radiators don’t have TRVs, you’ll need a plumber to add them.

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However, it does have an Away Mode. Rather than switching the heating off completely while you’re out, this feature allows you to set a minimum temperature at which you want your home to remain at while away. If the temperature plunges below this threshold, the heating will spring to life – handy, if you're concerned about frozen pipes when you’re not at home. Comfort mode, meanwhile, learns how your home warms up, so the heating can be turned on early to reach your desired temperature by a set time.

Custom Moments can be created, where you set the target temperature that you want. For example, you could set a holiday mode where the heating’s mostly off but give a boost at set times to warm it through. If you have a gravity-fed system, Wiser will only be compatible if it is fully pumped, by that we mean upgraded with motorised valves and a cylinder thermostat. There’s also a two-channel kit, which adds hot water control into the mix for conventional boilers. If you have a home with a hot water cylinder, then you need this version.I slightly prefer the Tado and Honeywell Evohome TRVs, which show the current temperature on their display and let you set a new target temperature. We also found it was easy to create some basic automations in the app using the Moments feature - such as turning the radiators in the lounge on, while also dimming the map connected to the Wiser smart plug to create a cozy atmosphere of an evening. App An older and more traditional system type, gravity-fed (or vented) installations feature a conventional boiler and utilise gravity and convection to heat water and distribute it to taps and radiators, rather than the water being pumped. Cold water from tank(s) in the loft flows down by gravity to a water cylinder where it is heated, it’s then forced to hot water taps and radiators at low pressure.