Hot Water best upgrade, instant Hot Water
After many run-ins with my instant hot water heater and a complete change out I replaced the single lever operated shower control with an expensive Kohler hot water management control. It was worth every minute and every everydollar to have non scalding controlled water in the shower. With the new knobs there is also no chance of bumping into it and changing flow or temp. Kohler K-2973-KS-NA
Kohler K-T10183-7-CP $365 approx.