The customer had a couple concerns and questions dealing with a reverse osmosis system, a hot water issue at the master bath Roman tub faucet and pressure issues in the master bath shower. -The house pressure was about 52 psi. The existing pressure reducing valve was a plastic one. Rather than trying to adjust the pressure reducing valve, the client decided to replace the pressure reducing valve with a more dependable brass one. After the prv was installed, the house pressure was set to 70 psi. -the master soaker tub was 108 degrees. I adjusted the mixing valve to be 122 degrees at the master tub. -Once the pressure was increased, the master shower had better pressure. I gave an estimate for a client supplied RO system.