Question regarding central heating and energy use

Posted 17th Dec 2020
Have a query regarding energy usage bill when using TRV on radiators.

Here is the scenario, I have 4 radiators with TRV. I remotely turn two off for each of the bedroom and leave two on for my large living room.

Question, when the boiler is operating at usual performance, is less units being consumed powering the two radiators compared to having all 4 radiators on?
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