We turned off the water to look at a leaky faucet and when we turned the water back on, we can't get full pressure. OSO 20 RD no hot water after turning water on ... tank the water in the bath came back on with reduced pressure. If this is the case, then the problem is on your side. Try turning the valve above the water heater off and then back on to see if ... hot water pressure. Losing Hot Water Pressure in Whole ... We had no problem with cold water pressure. Low Water Pressure Problems. Giving Back ; Join Our Team ... No Hot Water? Not Enough Hot Water? Re: No hot water in entire house after repairing one faucet Sounds like you need a new valve at water heater. ... and this works well to increase water pressure. How Much Will It Cost? Hi. Hot Network Questions Forum discussion: I shut my water off in the garage to replace a bathroom sink cut off valve but when i turned the water back on, I have no pressure Turn the water back on and see if there is plenty of pressure and flow. Old valves don't like to turn off and then back on. Low Water Pressure Problems. Water Heater Too Noisy? How to Diagnose Sudden Loss of Hot Water Pressure & Flow in a Building. The water is turned back on, no leaks in the new connections, and best thing, hot water coming out of every faucet! Lost Hot water pressure. We turned off the water to look at a leaky faucet and when we turned the water back on, we can't get full pressure. We had a leak under the house so at night we would turn the water off at the street. I have recently experience a serious drop in hot water pressure, ... pressure and will push the air lock back out. After turning the hot water on to fill the tub or washer, there is a large drop in hot water pressure. Related QuestionsMore Answers Below. ... and this works well to increase water pressure. Came home after work to a water leak, a coupling had corroded and come apart on the hot water line. ... Why is there no water pressure after turning main off then back on? Low water pressure after turning main water back on. Just installed a new gas hot water heater. This is how you check your standard well pump to see if you can get the water back ... Well Pump Restart. What could cause a loss of hot water pressure through an entire house? Yes No.