Tankless Water Heaters
Tankless water heaters heat water on a per-use basis which means they do not use storage tanks that lose the heat after time. However, like traditional water heaters, the tankless kind can use either gas or electricity for its use. How it works is that cold water flows into the unit and heats instantaneously as it is being used. They can be used to supplement water heating at the point of use or can be used in place of conventional tank water heaters.
Because tankless heaters do not expend power to maintain the water at a continuous heat they are very cost effective. They also do not take up the space like regular water heaters and can be mounted almost anywhere in the home. This is great for new homes because the plumbing does not have to be tailor-made for the water heater. The heater can be put anywhere it is needed.
In homes with 1 or 2 people it doesn’t make sense to keep a 30-40 gallon tank always heated, especially if the shower area is nowhere near the hot water supply. In many instances the hot water has to heat ice cold pipes to get to the faucet wasting both heat and valuable water. Tankless water heaters can be used as a booster for a dishwasher or a solar water heater.
The drawback of a tankless water heater is that there is a limit to how fast it can heat water. This means that it restricts the amount of different areas than can use the water at one time. However, you can get larger ones to meet this demand.
The tankless system is many times more expensive that conventional water heaters and this affects the payback time. But they also around 20 years which is approximately 3.5 times the life of a regular heater. Unlike a regular water tank a skilled plumbing contractor is needed to install the system.
In the future we may see small satellite, tankless heaters for every hot water tap and the regular tank.
3 comments April 15, 2008

