Limitations of the tankless water heater

Some of the limitations of the tankless water heater:

I think tankless water heaters are great. Some limitations make them unsuitable for some users. Tankless water heaters were originally designed in situations where a tank was undesirable and/or inefficient, such as buildings with very minimal hot water demands. They are more commonly used overseas and in Canada than in the US, probably because we are not as attuned to the economy and space saving attributes of these water heaters.

Since the water is heated as needed, there can be tremendous savings over tank units that keep the water hot all day, even when no one is home. Another more conventional alternative, if you have gas or oil heat, that is also energy (and dollar) effective is to integrate your hot water heater into your gas or oil heating system. If the price of gas or oil is especially low in your area, a standalone tank unit may be competitive if you take the extra effort to super insulate the tank (via wrapping the tank with insulation) and keep the temperature down to under 120oF.

Before purchasing a tankless water heater, you must understand a very important compromise.

Providing you purchase a unit with an adequate size tank, tank-water heaters can supply hot water to run multiple appliances and or showers at the same time. Due to their limited capacity, tank water heaters can run out of heated water.

As water flows through a tankless system increases, it experience sizeable drop-offs in water temperature. The heating element in a tankless system heats the water to an adjustable utmost temperature. As the volume of water moves through the water heater increases, the temperature of the heated water correspondingly decreases.  Changing your hot water usage habits can help eliminate this problem. Some of the changes can be as simple as using one hot water appliance at a time, while others could be more difficult as scheduling family members showers at different times.  Another solution could be installing more than one tankless system in your home to serve different areas. For instance, you may wish to install a tankless water heater for kitchen and laundry use and another system for the bathrooms.

A plus with a tankless unit is that you'll never run out of hot water. Tankless systems heat water on demand. As long as water is running through the heating elements, the system will produce hot water.

Quantities of companies online sell tankless systems. Which product is best, depends on your water usage. It is recommended that you get the written manufacturer's performance statistics on the models and brands you are considering before making a purchase. You may also find your local plumbing supply house as another possible
source of information. Ask your local dealers which brands or models the sell the most of, or which ones if any they have had complaints.
 

If you were searching for tips or information for the tankless water heater, look no further.