The average person does not know the meaning of a variety of water heater terminology. Often a term used for one type of water heater is not used for another. Being up to date on the terminology used will help you to make the right choice when it comes to the type of model needed, as well as the size and functions.
When the time comes to purchase a new water heater, you will want to know what all the features listed mean. The following list of the most common water heater terminology will help you to determine if the right one is being purchased for your needs.
Water Heater Terminology
Gallon Capacity. Water heater terminology used, such as gallon capacity is the amount of water a tank type water heater will hold. The electric models vary from 2 gallons to 120 gallons and gas models usually hold from 30 gallons to 100 gallons.
Input: This is the amount of energy (electricity or gas) that is used per hour to heat the water in the tank. The higher the input, the faster the water can be heated. Water heater terminology for measuring input depend on the type of unit being used. An electric model measures input in watts per hour and a gas or propane water heater measures the input in British Thermal Units (BTUs) per hour.
Limited Warranty: This is the number of years the water heater manufacturer will replace or repair the unit if it should fail. For example, if the water heater leaks within the time frame that the warranty covers, the company from which it was purchased will replace the unit. Each manufacturer has its own specific warranty, which can be found in the paperwork accompanying it when it is purchased.
Recovery: This is the number of gallons of water that can be heated, depending on the temperature set on the water heater and the temperature of the incoming water. If, for example, the water heating appliance is set on the typical 120 degrees and the incoming water temperature is 40 degrees, the rise is going to be 80 degrees. The recovery at 80 degree temperature rise will be the number of gallons of water that can be heated to 120 degrees in one hour. The number of gallons will vary according to whether the water heater is gas or electric.
First Hour Rating: This is how much hot water can be delivered during the first hour that you begin using the hot water. The amount is calculated by using the one hour recovery amount and capacity of the water heater. Typically, gas models have a higher first hour rating.
Water Heater Terminology Guide
Energy Factor: Water heater terminology in relation to the energy efficiency of the unit include the energy factor or EF. The higher the EF, the more efficient the unit is and this means a savings for the user in terms of energy used to heat water.
Heat Traps: These are special fittings that can be installed at the hot water outlet and the inlet where the cold water enters the tank. They help prevent heat loss from the appliance at these points when the hot water is not being used. This increases the energy factor of the unit.
Insulation R Value: The R Value is the measurement that is used to tell how well the insulation used on the water heater helps to reduce or prevent heat loss from the tank. For example, if a tank type heater has one inch of insulation, the R value is 8.33. A higher R Value is another way of increasing the energy factor.
Self-Cleaning Water Heater: Water heater terminology such as self-cleaning simply mean the cold water is piped into the unit in a way that prevents sediment and lime from settling at the bottom of the tank or on the heating elements. This allows the unit to be energy efficient longer and keeps the cost of operating the unit lower.
In addition, Self Cleaning Water Heater Terminology helps the tank last longer by reducing ‘metal fatigue’, which can occur when sediment builds up, especially at points where the tank is welded during manufacturing. Have a look at other reviews of WaterHeaterReviewer.