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Types Of Systems Providing Hot Water On Demand
Traditional hot water circulating system, warm water circulating system and the demand hot water system are three main systems that solve low flow problem of hot water. These systems are very helpful in providing instant hot water and saving water wastage. Let us discuss about them in little detail.
Traditional hot water circulating pumps require looped plumbing from fixture to fixture with a dedicated return line at the last fixture. However, it wastes a lot of energy as the water heater needs to work harder and more often to keep hot water in the lines. They don’t work with most tankless water heaters.
In warm water circulating systems, a pump is used under bathroom sink that works in a way like temperature controlled traditional hot water circulating system operates. However, in warm water circulating systems the control temperature is set at a lower level. You can obtain instant hot water with the help of these water heaters. One drawback of using it is that many times hot water enters in cold water lines and for getting cold water you need to flush out the hot water first which leads to water wastage.
Hot water demand pumps supply instant hot water without wasting any drop of water. To initiate this system, you need to push a button and when hot water is delivered, the pump automatically shuts down.
Using this system, no mixing of hot or cold water occurs. Hot water line is completely separate from cold water line. The pump that is used in this system is very efficient in providing instant hot water supply.
Demand pumps are very green products as they save thousands of gallons of water and also require very little energy to operate. Typically a demand pump will consume less than $2 per year in electricity. Hot water demand systems can be very economical as well. A good hot water demand system can be obtained for under $200.
Hot water demand systems can easily operate with tankless water heaters. If you are going to use a demand pump with a tankless water heater make sure it produces enough flow to turn on the water heater.
Hence, in short a hot water demand system saves time, water, money and enables you to enjoy the instant hot water service by simply turning on the hot water faucet.