Step 7 · Test Hot Water Pressure

Allow the water heater 30-90 minutes to heat the new tank of water. Once it's had sufficient time, go to the various faucets in your home and test the hot water pressure again. It should be significantly improved and now match the pressure of the cold water. If the pressure is still low, the blockage may be further down the line, in the heat-trap nipples on the heater, or within the pipes themselves, which may require professional assistance.