Thats the beauty of TRV's you can turn them off as and what you want to heat to not.
Does mean the boiler still shunts the water around the entire heating circuit (if not the rads) only to heat a towel rail presumably with the stat and timer bypassed or shut down.
Which is why you get to combination fuel towel heaters - it’s a headfuck to do it with the boiler in the summer.
Yeah but only if you had a system that has the need for heating and hot water to work. A combi thats off will only provide hot water on demand if the heating is off.
Does mean the boiler still shunts the water around the entire heating circuit (if not the rads) only to heat a towel rail presumably with the stat and timer bypassed or shut down.
Which is why you get to combination fuel towel heaters - it’s a headfuck to do it with the boiler in the summer.