Upgrading to an In-Line, On-Demand Tankless Hot Water Heater

As a homeowner, you might consider changing your hot water tank to an in-line, on-demand tankless hot water system if you are planning any home improvement projects in the bathroom or kitchen. Switching over to an in-line or tankless hot water system provides an efficient and economic solution if you are replacing your current hot water tank because of age, or if it can no longer satisfy the hot water demands of your home.

A tankless hot water system works by heating water only when there is a demand for hot water. Cold water is connected to the in-line hot water unit which is a high-efficiency heat exchanger. Electric or gas heating elements that are wrapped around the piping transfer heat to the water at a very high and efficient rate.

The only time the heater elements are turned on is when a hot water faucet or tap is opened. The in-line hot water heater system senses the reduction in pressure, and water flows through the coils inside the on-demand unit. Heat is transferred from the elements to the coils and then to the water. When the faucet, or tap is turned off and the demand for hot water has stopped, the elements are turned off.

An electrically powered tankless in-line hot water unit requires a large amount of electricity for a short period of time. A unit for the average home would require approximately 60 amps at 240 volts AC. The main electrical service in the home should be a minimum of 200 amps. The wiring that currently runs from the electrical panel to the hot water tank may have to be upgraded, as most hot water tanks operate on a 30 amp to 40 amp circuit. Be certain to check with a qualified electrician concerning this issue and always follow any manufacturer recommendations.

In-line tankless hot water heaters are easily located near their point of use area. Since no tank of any kind is required, many are installed in bathroom vanity cabinets and underneath kitchen sinks in the lower kitchen counters.

In terms of plumbing, the cold water supply that currently provides water to the existing tank is directed to the location of the in-line on-demand water heater and connected. The output of the unit is then connected to the faucet or tap.

The energy efficient and cost saving in-line, on-demand hot water heater is a great home improvement. Tankless hot water instantly, when you want it, with no more wasted water "warm-ups".

Remember, always work safely.