Dual pump on whole system
Looking for some advice please. 1970s 3 bed semi with one bathroom. Only other water source apart from bathroom is the kitchen sink. I have a 2.0 bar pump on the hot water only currently. This existing hot pump is for the whole system not just isolated to the bathroom. Cold water is just gravity fed. I have a mixer shower and due to the pump being on hot water only the pressure is terrible so want to get a 2.0 bar dual pump on both hot and cold. To avoid cutting through ceilings and floors I want to remove existing single pump with a dual booster, that like the hot pump applies to the whole house not just isolated to bathroom. Would this be possible? Would there be any reason a plumber would refuse to apply this to whole system and not just the shower in isolation please?