Category Archives: Glossary

Learn about all the different parts of many types of water heaters with our Water Heater Glossary.

What Is A Tallboy Water Heater?

Tall Water Heater

A Tallboy Water Heater is a tall thin tank type water heater also known as a tall water heater. It is probably the most commonly installed water heater and is used where height is not a concern. The tall size and small diameter makes the Tallboy Water Heater an ideal choice where you want the space saving design of a small footprint. Tallboy Water Heaters […]

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Where Is The Water Heater Temperature Adjustment Dial?

Water Heater Adjustment Dial

The Water Heater Temperature Adjustment Dial on your water heater can be in a variety of locations depending on the type of water heater you have and the type of controls it has. You should never turn the temperature up high enough to cause scalding without having a tempering valve installed on the outlet of the water heater. An electric water heater typically has one […]

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Why Is my Water Heater Less Hot In Winter?

Winter

Many people believe their Water Heater is Less Hot In Winter. However, this is not the case, the temperature of the water in the water heater is controlled by the thermostat and is heated to the same temperature regardless of the season. The perception that their Water Heater is Less Hot In Winter is caused by the lower temperatures of the incoming cold water supply […]

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What Is An Expansion Tank?

Expansion Tank

An Expansion Tank is installed on systems where water is heated to store the volume of water created by thermal expansion without a dangerous pressure increase. Water cannot be compressed, yet when water is heated its volume increases. In a building’s water supply system many times the small volume increase simply pushes its way back towards the city water supply without any problems. But there […]

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What Is A “Low boy” Water Heater?

Short Water Heater

A “Short” Water Heater also sometimes referred to as a “Low Boy Water Heater” is used where the space the water heater is being installed in is not tall enough for a regular water heater. The “Short” Water Heaters are available with the same tank sizes as tall water heaters but rather than being tall and thin they are short and fat allowing installations under […]

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What Is A Water Heater Blanket?

A Water Heater Blanket is an insulation blanket that is wrapped around a water heater to help prevent standby heat loss from the tank of the water heater. Water Heater Blankets are often constructed from fiberglass insulation and have a plastic layer on the outside. The blankets are wrapped around the water heater and tape is used to seal the seams and edges. When installing […]

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What Is A Water Heater Drip Pan?

A Water Heater Drip Pan is a round metal or plastic pan with a drain designed to catch any water leaking from a water heater tank and drain it in a manner which will prevent water damage to the building and its contents. Water Heater Drip Pans are round and placed underneath an installed water heater. The sides of the drip pan are about four […]

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What Is A Stop & Waste Valve?

Stop and Waste Valve

A Stop & Waste Valve is a valve used to shut off water, that has a port that can be opened to drain the outlet side of the valve. A Stop & Waste Valve can be any of the various types of valves, ball valve, globe valve, gate valve, etc. but they are able to waste or, drain the water held in the valve and […]

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What is a Gas Cock Valve?

A Gas Cock is another name used by plumbers to refer to the valve used to turn the gas on and off supplying an individual appliance. If the plumber was to use the term gas valve there would be some confusion as to exactly which valve he was talking about. In the case of a gas water heater the term “Gas Valve” would refer to […]

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What is a Thermostat?

Thermostat Diagram

A Thermostat is a device that is used to control the temperature of the water inside the tank of the water heater. There are many different types used in the different water heaters depending on the type of water heater and the type of energy source used but they all control the heating either electrically or, mechanically. The Thermostat usually also has some form of […]

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