What is the optimal way to arrange zones?


I have a home with 4 rooms

Living room has 3 radiators

Main Bedroom has 1

Hall has 1

Theres also three bathrooms, one for each bedroom and hall, they have radiators always open

All the rest radiators are tado valves

My main objective was to basically separate the house in two zones, living room vs rest, because the living room is full of bad windows that lose heat quickly, and so i could close that zone during the night and save some money.

Inside the app I still had each room separately, and I have set up the schedules accordingly, and it does kind of work wrt keeping the right temperatures in every room.

But I have noticed that the boiler runs very frequently.

My intuition is that, since I have now 4 rooms in the app, every room acts indepentently, so I have 4 consumers for my boiler, which makes sense then that it would receive many more requests than with the basic setup of one thermostat.

Is a consideration in the Tado algorithm? Trying to minimize heating requests while still achieving target temperatures in as many rooms as I have?

Or should i try to handle this myself? By trying to reduce the number of heat consumers, either grouping many rooms together, ex. having a "back" and "front" of house, or not allowing some rooms to call for heat through the zone controller settting?


  • policywonk
    policywonk ✭✭
    edited July 10
    The simplest answer, as i see it, but not the cheapest, is:
    1. To fit tado trvs on every radiator
    2. To set the overnight temps for the living room and perhaps hall quote low, say 13 degrees, during the night. Then set the bedrooms lower during the day, but the temps are always on the slightly cool side until you have learned to trim them by time of day.
    Eventually you'll find a suitable balance with the app. Have found that trvs really do save lots of money in 6 months.
  • davidlyall
    davidlyall ✭✭✭

    While I would agree that having TRVs on every rad is a good idea, I would add the following points

    1. check that your system doesn't need at least one radiator to be open. Many systems need an open rad to act as a bypass
    2. I wouldn't allow all TRVs to call for heat. Especially the bathrooms and hall. I would leave them as independent so you can set the temp but they only get heat if another room is calling

    In my house, I have 7 rads with Tado TRVs plus hall rad is open and 2x bathroom rads are on manual TRVs. I initially had all Tado TRVs set with a zone controller so they could call for heat. As you've also seen, that can result in the boiler firing frequently.

    I've adjusted the settings so only the living room and 3x bedrooms can call for heat. Result is a house that's still warm but the gas consumption has reduced and boiler is running less

  • wateroakley
    wateroakley Volunteer Moderator

    @Freelancer the best answer is ‘suck it and see’. For us, we have trvs everywhere and save over 50%.it really depends on how you use your heating.