I have this setup coming off of my hot water tank.
Recently I started getting only luke warm water to the taps and shower furthest away from the water heater(#9 & #10), also sometimes my cold taps would run warm. The taps and showers closest did not have this issue. I cannot seem to find a recirculating pump or any sort of mixing valves in the system. This issue only started once I installed new filters into the Filtration system. Is it possible to have this system without a mixing valve/recirculating pump?