In the UK, the majority of us are heating our homes with hot water heated up by a boiler and circulated by a pump to radiators in each room of the house. It’s clear that it is not efficient to have a single thermostat to monitor the temperature in one room and use this to indicate to the boiler that it should start up and supply more hot water. It doesn’t take into account the rooms where no one happens to be at the moment – it’s not necessary to heat up a bedroom for most of a day if it is unused.
That’s the problem that OpenTRV solves. 60% of the domestic energy use in the UK is heating and 60% of us admit to heating rooms that are unoccupied. OpenTRV helps to get both of those figures down and saves you money through reduced heating bills.
How does it work? On the radiators, you screw on a thermostatic radiator valve (TRV) that can be switched on and off by radio. The OpenTRV control unit is a separate small box with just a couple of buttons and a single LED. It senses the temperature and whether anyone is in the room and if it decides or is instructed to heat up the room, signals the TRV on the radiator to open up. There is another OpenTRV unit attached to the boiler and when that unit hears the call from an OpenTRV unit to its radiator, switches on the boiler to provide hot water.
In essence, that’s it. There is a light sensor in the OpenTRV control unit so that rooms which are unoccupied/dark are not heated as much and a button to provide quick heat in case you feel that the radiator needs to come on immediately.
We like to think of it as a cosy warm bubble of heat that follows you around your home.