My 2 story home built in 1960 has upper level Kitchen and MBR, lower level kitchenette, 2 bathrooms. There is a dedicated loop back to bottom of H2O heater. There is a Honeywell Aquastat but it has been disconnected from the recirculation pump and the pump was removed in 1990. I think there is a check valve near the water heater on the return loop. The return loop water is warm and the hot water out is hot. Cold water out from water heater becomes cold when hot water is opened at any tap.
Lower level hot taps in bathrooms and kitchenette are at best lukewarm. Previous owner says the system always worked well with near instant water everywhere. Also claims the sytem is gravity based and does not need pump. We are new to the house and have had recent remodeling but contractor says they did not change anything.
Would installing a pump fix the issue of likewarm water?? Help please!