An Electric Tankless Hot Water Heater, also referred to as Demand or Instantaneous Water Heaters, are able to provide hot water for a home without producing standby energy loss. This is a great benefit when compared to traditional water heaters that store hot water, leaving it on standby for use at any time. Instead, the Instantaneous models are used only when hot water is needed.
Since there is no storage tank being used, an electric tankless hot water heater bypasses the need for extra supply of energy due to storage of water. This can save a significant amount of money over time, even if you do not normally use a high amount of water in your home. The lifestyle activities that consume the most water include dishwashing and clothes-washing, showering, and cooking. This means you can perform your most frequent daily and weekly activities without worrying about consuming too much energy or wasting any money on utility bills.
How Does an Electric Tankless Hot Water Heater Work?
Instead of heating the water with a gas burner, electric tankless hot water heaters use an electric element to heat the cold water that comes through the pipes after the tap is turned on. Therefore, these models provide a regular, constant stream of hot water. It is more convenient than traditional models that require you to wait for the hot water to fill the storage tank.
Usually you can expect electric tankless hot water heaters to deliver at a rate of 2 to 5 gallons (7.6 to 15.2 liters) per minute. Flow rates will be generally lower than gas-fired models. Either way, the convenience and speed of these heaters make them superior to their more traditional counterparts.
How is an Electric Tankless Hot Water Heater Used?
There are a variety of applications within the home, and even outdoors, for these types of heaters. How the model is used will depend on the water demands of the household and the size of the heater. If it is on the smaller size, it may not be able to meet the demands of water supply.
For example, a home using a relatively small model may not be able to use multiple appliances at the same time. Using a dishwasher and taking a hot shower at the same time may push the heater too far. Cold water may then be used instead to accommodate the demands the household is placing on the heater. This issue can be addressed by using two or more heaters or a “whole-house” model to meet your hot water needs. Another option is to install an individual heater for separate appliances.
An electric tankless hot water heater can even be used outdoors. They can be installed for things like outdoor sinks and remote BBQ grills, hot tubs, remote restrooms and pool showers.
How Much Can an Electric Tankless Hot Water Heater Save Me?
The amount of energy, and ultimately money, you save by using this type of heater will vary based on how many gallons of hot water you typically use in and out of the household. If you consume fewer than 41 gallons of hot water, you will typically see 24 to 34% more energy efficiency when compared to traditional models.
If you are using much more hot water – around 85 gallons per day – then these heaters can be 8 to 14% more energy efficient than the conventional models. These reductions in energy consumption change to a savings of 27 to 50% if you choose to install them at each outlet for hot water.