|A critical household appliance is your water heater. Powered by electricity, the water heater warms cold water and prepares it for use in your showers, baths, washing machines and dishwashers. If you own a house, chances are you take your water heater for granted. They sit quietly in your basement and go about their business of heating water without a lot of fuss.|
HOW DO WATER HEATER WORKS?
Whenever you turn on a water faucet or have a hot shower, heated waters drawn from the top of the tank and is replaced by cold water that is carried to the bottom through the dip tube. When the water temperature drops, a thermostat activates the heating elements in an electric model. An electric water heater needs no venting. In both, an anti-corrosion anode attracts that would otherwise attack the tank's walls.
| SIZING A WATER HEATER |
To determine how big a storage water heater you need: Estimate what time of the day (morning or evening) your family is likely require the greatest amount of hot water. Calculate the maximum expected hot water demand for the peak hour. Select a water heater with a "first-hour rating" (FHR) that is nearly equal to your estimated peak-hour usage. Since the first-hour rating includes the recovery rate, a smaller unit with a good recovery rate outperform a larger unit with a lower recovery unit.