Advantages and Disadvantages of On Demand Water Heaters

Therehas been is a emerging trend towards tankless or on demand water heaters which is not a new concept as they have been used in Europe for years. The basic thought is that it turns on only when you open the hot water tap dissimilar a standard hot water heater like most United StatesAmericans own that keeps gallons of water hot at all times. When you turn on the tap with an on demand heater, water begins to flow through a series of pipes that are encompassed by either a gas burner or electric coils where it is immediately heated which is the reason they can heat a virtually endless supply of hotwater. If you own a typical water heater, the process works more like heating a large kettle of water on a stove in which if you run out of hot water, it could take a half hr or more to restore hot water to your house. Yet on demand system have restrictions as well. Though they can never run out of hot water, they can only produce a certain quantity at a time. The average temperature of the city you live will greatly affect the type of system you require. Systems are measured in gallons of water per min. and temp. it raises in degrees. A typical use such as a shower, washer, or dishwasher, needs about 2 ½ gal. per min.. So two simultaneous users would require 5 gallons per min. In terms of temp. rises you will need to select what it right for your avg. temperature. For example, if you live in the Florida Keys you will not require the temp. rise that you would if you owned a home in Nashville, TN. Likewise a home in Nashville will need than a home in Milwaukee. Unfortunately in order to have a market edge over their competitors many manufactures measure their degree rises differently to show better gal. per min. rates. Do your research on what your typical temperature range would require. The annual saving of on demand heaters can add up offering estimated a 1/3 decrease in average annual energy consumption and cost. The downside of on demand is they heaters cost 2x what a typical water heater cost. However, if you purchase a gas tankless system with a .82 energy factor or more, you can receive a 30% federal tax credit. A tax credit works more similarly to rebate on your taxes not merely decreasing your tax liability like a tax deduction would.

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