How to flush hot water heater. Why flushing is important for your heater. Step by step instructions.
Sediment build-up inside the heater's tank results in decreasing efficiency and low performance is the number one reason why flushing should be done regularly - at least once a year. Flushing a water heater is easy DIY project that doesn't require any special skills or tools.
You don't have to be
an electrician or gas technician to flush the hot water heater. Just use
the recommended tools, follow the guide and be careful when dealing with the hot water.
Flushing a water heater should be done regularly, per manufacturer's recommendations. Sediment deposits at the bottom of the heater's tank are the problem as it will lower the heater's efficiency and increase the cost of the heating. This is especially important with the gas heaters, as the formed deposits will be between the heat source (combustion chamber and gas burner) and water. Electric units will have deposits on the heating elements which also reduces the heat transfer.
Other symptoms of the sediment and lime build-up are the annoying noise and the clogged drain valve.
Most of the newer models, either from Rheem, AO Smith or Bradford White manufacturers utilize systems to reduce the deposits, but still regular flushing is recommended.
If you live in the area where water is very hard you might have to do the flushing more often. Installing a water softener is a good idea to prevent mineral build-up, while deliming solution, such as phosphoric acid at a food-grade level, will dissolve the sediments so it can be flushed away from the heater.
We also do flushing if water is discolored or contains chlorine odor after chlorination procedure, which was used to eliminate various bacteria accumulated in the heater.