SWMBO is dragging me into the 21st C and having our bathroom rebuilt. I can't blame her as it was last done 26 years ago and never finished. That's by the by. Most choices are made but we're struggling with what to choose for a shower pump. Suppliers are recommending a Salamander RHP75. The use of the pump will be shower only, but we would like a quiet and reliable unit. The shower mixer and other hardware is Hansgrohe. I have read a bit about shower pumps and do not understand the references to negative and positive. Some help here would be appreciated. Our heating system is conventional gas boiler with storage and expansion tanks in loft. There is about 5m head to the shower. 42" cylinder with immersion heater. Bathroom is on ground floor.
Can anyone tell me please what positive/negative means in relation to a shower pump? Is the Salamander RHP75 good and reliable, and should we be looking at other pumps? Stuart Turner have been recommended by a friend.
Many thanks, N