What To Compare In Tankless Water Heaters
In a conventional water heater, the water is heated by either gas, electric, or solar energy and then stored in a tank for further use. The tanks can run anywhere between 30 and 80 gallons and are selected based on the size of the home and the number of people that live there. Tankless water heaters, as their name implies, have no tanks and only heat the water as it is needed. When you compare tankless water heater performance to that of a tank model you will find that the tankless costs more to install, but uses less energy to heat the water. Because there is no tank the amount of hot water available at any one time is less.
Before you make your decision to purchase a new water heater you will want to compare tankless water heater (s) that are available for needs. The first breakdown would be into either gas or electric models. If you have natural or LP gas available these units tend to be the more efficient. They either need to be installed outdoors or if indoors they need to be vented to the outside. Electrical models are also given the energy star ratings and will save you approximately a third over what you are paying in utility bills on your conventional tank models.
For your next step compare tankless water heater to what your actual needs are in your home. A common error when buying the tankless water heater is to undersize the output. If your heater can not keep up with the demands of your household and does not produce a consistent supply of hot water you will not be satisfied with it. The key element here is the temperature of your groundwater. Your water heater will have to raise the temperature from what it is at the source to about 120 degrees. Your heater will need to raise the temperature difference between groundwater and output water by the number of gallons used per minute to keep up.
Compare tankless water heater purchase and operational costs to that of tank models. The purchase price will be higher. Will you be able to recoup the higher price with what you save over the life expectancy of the heater? Look for ways to reduce the initial costs. There may be tax credits available and manufactures will offer sales and discounts to attract customers to their products.
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