Ans.You can do the following steps: 1. Flushing Your Unit This is a good technique. You can do this twice a year.  2. Vinegar Soak You can use vinegar that will help to get rid of water stains and sediments. You can check the above-mentioned steps to add vinegar in a water heater. The process is not very tough and it requires only 6 hours. 3. Water Softener Installation Water softener installation is good for you to use your water heater regularly and for long hours. If you want to use a hot water heater for a long time then this technique is good for you. But water softener solution is costly and it has costly maintenance.