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Hot Water Cylinders Explained – How They Work

Thursday, March 9th, 2017

In New Zealand the most common form of hot water heating system is the humble hot water cylinder, low installation costs and proven reliability have made a firm favourite across the country for many many years. Although electricity is historically the most popular, these days hot water cylinders can be powered by gas, solar energy, heat pumps and wetback systems or mixed combinations of these methods.

How Do Hot Water Cylinders Work?

Simplicity has always been the key to the success of hot water cylinders, they deliver hot water right where you need it with a minimum of fuss. Similar to an electric jug, hot water cylinders rely on an element encased within an insulated and reinforced storage tank to heat and maintain the surrounding water to the required temperature, which is regulated by the cylinders thermostat. (In New Zealand the recommended hot water temperature is 60 degrees in the cylinder and no more than 55 degrees at the tap).

Essentially cold water automatically enters the cylinders storage tank when hot water exits, resulting in a lowering of the water temperature in the bottom of the tank, this then triggers the thermostat which allows the element to activate and heat the water to the set temperature again. This process continues 24/7 keeping you in a constant supply of perfectly heated hot water.

What Are The Components Of A Hot Water Cylinder?

What Are The Benefits Of Electric Powered Hot Water Cylinders?

What Are The Drawbacks For Electric Powered Hot Water Cylinders?

Need help deciding which hot water cylinder is right for you? Talk with the experts in Hot Water Cylinder repairs and replacements at The Cylinder Guy. Whether it is mains pressure hot water cylinders, low pressure hot water cylinders, gas hot water heating, an outdoor cylinder, solar or wetback powered hot water cylinders or the increasingly popular hot water heat pump system, the nationwide network of installers at The Cylinder Guy will provide you with the best match for your home or business. 

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