Electric Water Heaters – Standard Electric Hot Water Heater tank types are designed to heat water stored inside a glass lined storage tank and is insulated between the tank and outer jacket. Also, there are lifetime electric water heaters available, and are made of stainless steel or polybutene, surrounded by fiberglass. Water heaters are heated by using one or more 110 or 240-volt elements that turn off and on, by thermostat switches that monitor the water temperature. Hot water tank capacity varies from 2 gallons to over 100+ gallons. The smallest models are called “point of use” and service only one or two fixtures, while larger units supply hot water to multiple fixtures.
Electric Hybrid Water Heaters – A Hybrid Electric Water Heater tank type is also known as a heat pump water heater. A hybrid system does not create heat, it moves heat already present. It works like a refrigerator but in reverse. It draws the heat molecules out of its surrounding environment and channels it to the evaporator coils that contain refrigerant to raise the water temperature in the tank. When the demand for water is high, the water heater switches to electric heating or both at the same time. The Department of Energy recommends a year-round temperature of 40 to 90 degrees Fahrenheit for this type of water heater.
Electric Tankless Water Heaters – Electric Tankless Water Heater heats water on demand as you need it, instead of continually heating water stored in a tank. They last much longer than a tank type water heater and offer unlimited continuous hot water. Water is heated by electric resistance coils in tubes that warms the water, the temperature is increased though each tube until it reaches the desired temperature; the more tubes, the higher temperatures and more fixtures you can run simultaneously. Incoming water temperatures and fixtures count will determine what size electrical service and number of breakers that would be required.
Gas Atmospheric Water Heaters – Atmospheric Gas water heater is a glass lined steel tank type with an insulated jacket also. There are no point-of-use gas water heaters, they range from 30 gallons up to 100 gallons or more. Heated by a gas burner assembly at the bottom of the tank, this heat transfers to the water in the tank through convection. The unused gases escape vertically through a flue vent at the top of the water heater and out through the roof vent.
Gas Direct Vent Water Heaters – Direct Vent Water Heaters are designed to draw air from outside the home, eliminating problems caused by insufficient indoor ventilation. The unit has horizontal air intake and venting from the outside wall with no electrical power needed. This one-pipe, dual-channel closed venting system draws all make-up air from outside the home, eliminating problems caused by insufficient indoor ventilation and is FVIR compliant.
Gas Power Vent Water Heaters – Power Vent & Direct Vent Power Vent Water Heaters requires an additional airflow mechanism to assist in blowing the hot air through the vent. Power venting allows horizontally venting for a long distance and can operate off indoor air combustion if it meets requirements, or outdoor air combustion. These are typically used when the space to install a water heater is far from the home’s venting system, from a wall, and when there is improper air for combustion.
Gas Combination Water Heater – Combination Water Heaters are designed to provide both potable water and heating of your home from a single heat source. The heated potable water in the tank transfers it’s heat through the heat exchanger to the fluid within the coil. The double wall heat exchange coil also provides added protection, required by certain municipalities, against the mixing of potable water and space heating fluids.
Gas Tankless Water Heaters – Gas Tankless Water Heaters are of mainly of two types; condensing and non-condensing, giving you unlimited on demand hot water instead of continually heating water stored in a tank, and can lasts 3 times or more than a tank type water heater. Water is heated by gas, as water travels through a stainless-steel heat exchanger to reach the desired set temperature. Incoming water temperatures, fixtures used simultaneously, and location will determine what size tankless water heater you need and if a designated gas line is required.