Common Problems with Tankless Water Heaters

Before you go and buy one of those expensive tankless water heaters, specifically the gas-powered ones, you need to know about the problems that commonly plague these kinds of water heaters. If you are aware of them then you can do the adequate preventive measures.

Gas Supply Issues

Because there are no storage tanks in tankless water heaters, the water needs to get heated up while it is flowing through the unit; doing so requires burning a lot of fuel. This is why the gas pressure in your home needs to be high enough to supply the burners with enough fuel. If not, the internal computer will sense it and shutdown the heater automatically.

Exhaust Issues

In tankless water heaters, the internal computer routinely scans the exhaust temperature so that it can adjust the gas burners to burn only the required amount of fuel. The problem here is because of the fast water heating process it only takes a few moments for the exhaust to become extremely hot. And if there are too many bends and other restrictions that prevent the exhaust from escaping, the heater will turn off as an emergency procedure.

Corrosion of the Internal Parts

The most important part of tankless heaters is the heat exchanger, as it is the part that actually heats up the water. It is made of either a copper or stainless steel alloy that is highly corrosion resistant, but being resistant does not mean that corrosion will not happen.

Condensation often occurs along the exhaust vent pipes, and this condensed water is acidic. If the water heater is not installed properly, condensed water will collect inside the heater and cause damage to all the internal parts, including the all important heat exchanger. You need to properly install the heater and all its piping properly so that the condensation can get drained properly.

High Water Pressure

If you live near your municipal water tank, or any other public water supply, you might have a bit of trouble with high water pressure. If the water pressure gets too high the valves and other fittings inside tankless water heaters will break. You need to have a pressure regulator installed in the water supply line of your house to prevent this from happening.

Improperly Sized Heaters

This is probably the most common mistake that first time buyers do. They buy the cheapest tankless water heater they can find, only to find out later that the unit is unable to keep up with the hot water demand of their home. But it is not just the size of the water heater that needs to be taken into consideration when sizing a water heater for the home, gas and water supply play a vital role, as well as your home's location.

Conclusion

To sum it all up, tankless water heaters are far from perfect. They still have their own share of problems just like the other types. But now that you can identify the problems before it happens you can now prevent them from happening.

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