HoneywellHome BDR91A1000 evohome Wireless Relay Box, White

Delivered on timeReturned as fault was not due to this product

I purchased an EvoHome starter kit and an additional 4-pack of radiator valves to work with a Baxi 105e Combi Boiler. Having set up the system I realised that the existing 'dumb' thermostat meant that this needed to be set high enough so that if an individual zone was cold on the EvoHome controller then it could open the valve and the boiler would supply heat to that zone. The problem being that the boiler is on more often because it can only control the heat of the water in the pipes and when this drops it will heat back to the set boiler temperature. The answer to this problem is this device. When all zones are heated the relay is switched off and so is your boiler. When one zone drops below your EvoHome controller set temperature that device tells the wireless relay to switch the boiler on, the valve is opened, it heats then when at the desired temperature the radiator valve shuts off and the wireless relay turns off the boiler. I don't know how much more efficient this is quantitatively but common sense says it quite a bit. Being able to control individual rooms is amazing if like I imagine all people have the problem of home to set a thermostat so that the upstairs isn't roasting when you go to bed and downstairs still has a chill in the air.

Failed after 3 months

Works fine

Good

Perfect on time delivery and exactly what I needed

Bought this for a pensioner as delivery looked quick. As it happens from time of ordering to putting it into service less than 24 hrs. Good going amazon.

No technical support