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How to check leaks of water heater

Water heater is one of the most crucial home equipment one should have. However, it can be challenging to have a leaking water heater without knowing the actual leaking point. There are several ways on how to check leaks of water heater. 
The first step that should be carried is identifying the leak. First, fill the heater with water to full capacity and start to monitor the leak rate. This helps to give an idea of how big the leak is, based on the leakage rate.
After understanding the concept of leakage rate, start checking the entire heating system thoroughly. The process can be done as follows:

  • Remove all the boiler covers while checking the piping and outer fittings to identify there is no water leaking.

  • Check the feed pipe that runs to the boiler, and see if there is any sign of water leakage. This should also include the T-joints along the feeder into the heater.

  • If after doing this one cannot identify the leak, put a colored sheet underneath the unit and let it remain for almost an hour.

  • If you identify spots on the sheet, they can be used as a lead to identify the leakage in relation to the alignment

The next step is checking if there are any blockages in the heater system. This should be done if the first method has been unsuccessful. This means that the system might not have a leak but sediment blocking the pipes to create a backdrop. Feel the water pipe with your hand and note any change in temperature.
The change in temperature may be caused by sediment in the pipe which could be creating a backdrop.
There is another way how to check leaks of water heater if the other two were not successful. Check the secondary heat exchangers. This is common with older heater systems that operate on heat exchangers. It is tricky to locate a leak when the heat exchangers are leaking because leaked water run down through the discharging pipe and joins the exiting condensate.