The Efficient Home Forum

Why do you need a BDR91 for each zone? The ATC controller is capable of 12 zones, and I only have 1 BDR91 controlling the boiler for the 12 zones with multiple HR91 TRV’s across some of those zones.

Hi, Trying to understand how the warm weather saver logic works. All rooms have warm weather saver activated and it works great, particularly last week when it was hot. Only had the system a couple of months so this is only my first summer with it. Anyway I have 2 rooms, both have the same time sche...

Hi, So took delivery of my evohome parts this week which have all been prebinded and tested by the evohome tech Dept. Cant wait to get it all up and running when the plumber comes to fit the BDR91 units, controller and hot water kit on the 22nd. In prep i need to install the HR92’s (18no) and T87RF’...

Think I’ve worked it out, it’s called multi room zone control which I can configure via the controller........I think. From what I read each room can be set as one zone, but the trvs monitor the individual room temps and effectively work independently until the room temp is reached.

Hi, Just in the process of planning the zone set up of our 4 bed house before taking the plunge and purchasing the kit. I have a plumber lined up to install controller and hot water kit, but I had a quick question on zone set up. Can I set three rooms as one zone (2 kids bedrooms and main bathroom) ...