Why is my water heater draining so slow?

If the water heater won’t drain or is draining slowly, the problem is likely to be that too much sediment has built up in the water heater. Sediment can clog the water heater’s drain valve. The steps below show you how to break the sediment build up so you can drain a clogged water heater through the valve.Click to see full answer. In this manner, how can I get my water heater to drain faster? Easy to Follow Steps for Draining Your Water Heater If you have a gas hot water heater, turn the burner control knob to pilot. Push down a bit on the control so that it will turn. Go get your hose ready. Shut off the incoming cold water. Open the drainage valve on the tank. Wait. Furthermore, how long should it take to drain a hot water tank? It almost takes 20-25 minutes to drain out entire water from the heater and executing the whole process. But this duration varies from the size of the heater. Ideally, with the flow rate between 9 GPM to 17 GPM, for a 5—gallon tank, if the water flows out in the full swing, the tank gets emptied within 6-7 minutes. Moreover, why is it taking so long to drain my water heater? When your water heater won’t drain, the most likely cause is a clogged drain valve. This is generally the result of excessive sediment build-up within the tank. When water is heated, the minerals in the water separate and settle to the bottom of the water heater.How long should a 50 gallon water heater take to drain? about 5 minutes