Advantages and Disadvantages of Having a Tankless Water Heater

Naiven NPE-240S

Tankless Water Heater

Tankless water heaters have many advantages. In this section, detail information will be presented for homeowners to decide if they need a tankless water heater. Traditionally most homeowners have storage tanks. These storage tanks are always wasting energy to reheat gallons of water and provide hot tap water when needed. A tankless water heater is efficient in saving energy, and can ultimately save you money. Here at Fast Plumbing, we offer installation and annual maintenance on our tankless water heaters.

How Do They Work?

Tankless water heaters heat water when needed. When hot tap water is turned on, cold water goes through the pipe into the tankless water heater. Coils act as the heating source and automatically turned on when water is present in the system turning cold tap water into hot tap water. When hot tap water is turn off, the water heater goes into standby mode, and the burner turns off. Depending on the type of water heater, cold water can be heated up by electricity or gas burners. These types of water heaters can provide hot tap water at a rate of 2-5 gallons/ minute in an endless demand. 


  • After installation on the new tankless water heater, saving energy is almost right away. The optimization will cause to lower the water heating bills by saving energy. Some devices and systems can provide better results in heating water and save energy. Traditional storage tanks are always using power to reheat large amounts of hot water


  • Tankless water heaters also have a longer life expectancy reaching more than 20 years. On the contrary to the traditional water storage tank can only last between 8 to 12 years.


  • Another advantage is the safety of the water heater. Their safety is due to how it operates. It can only heat water when hot tap water is open. Unlike the storage tanks are always on.


  • Tankless water heater can’t provide a constant stream of water if too many gallons of water are in use. If a dishwasher, washer, and hot shower are operating at the same time, the tankless water heater will not be able to keep supplying hot water as much. 


  •  Tankless water heaters will cost twice as much as the conventional standard storage water heater tanks. Due to the installation fee and the mechanics of the tankless water heater. Tankless water heaters are much more complex than its storage tank counterpart.


  • A water softener will be needed for areas that have hard water. Hard water is very high in minerals including limestone or chalk. As the hard water boils and cools down the build-up of residue will stay in the pipelines of the tankless water heaters. The installment of a water softener will prevent this problem.


Here at Fast Plumbing, we offer residential and commercial services as a locally owned and operated business. Schedule an appointment or request a free estimate with one of our plumbers in Austin TX, Call Fast Plumbing today!