What is a Point of Use (POU) Water Heater ? [2021]

Point of use water heater can minimize the long wait for hot water to arrive after you open the faucet. It may seem obvious, but the duration of time you wait depends on how far the faucet is from the hot water heater. The more pipes it has to pass through, the longer it takes.Point of use water heater

A popular way to end the wait is to install a water heater. The name describes it perfectly – a small device that heats water very close to where it is used, such as a sink, shower, tub, or washing machine.

It is located close to where hot water is requested, so other terms are sometimes used, such as “use demand water heaters” or “POU water heaters” or “water heaters”. service “or” POS water heater “

Existing residential plumbing can include a point-of-use water heater without the need to redo the entire plumbing system. Due to their small size, point of use water heater on the hot water line is often installed under the kitchen or bathroom sink.

If you don’t want to wait several minutes to get to the hot water tap (and waste your water bill by running out of good water), a POS water heater is a great solution. To see if this is the right solution for you, consider different types of equipment, the energy savings available, and the lifetime costs.

Point of Use Water Heater and Instant Hot Water

The availability of hot water in our homes is the cornerstone of the modern world. One or more tank-type or tankless water heaters supply the entire house, but in many homes, one or two hot water taps are too far from the water heater to get hot water quickly.

Service water heaters are increasingly popular with a growing number of homeowners seeking the increased comfort, convenience, and efficiency they offer.

This may explain the situation in your home: you are standing, perhaps shivering, waiting for hot water to flow from the shower faucet. All the cold water that comes out of the shower head when you wait is the water that is along the pipe between your water heater and the shower. To shorten the wait, you must reduce the distance traveled.

Types of  Service Water Heaters

Like the water heater designed for the whole house, POS water heaters can be equipped with tankless or tanks.

    • Use water heaters: Similar to traditional water heaters, but with much smaller tanks, it is designed to heat water in one or two nearby places. On-site water heaters are usually 2.5 to 20 gallons. They can provide hot water immediately as they reduce the distance between the heating source and the appliances.Point of Service Water Heaters
    • Instant water heater: without gas station: Instant water heater without gas station works when the faucet is turned on or the button is pressed. Therefore, it will take very little time for hot water, but it will take a few seconds. POU tank heaters are a bit faster, but in both cases, the waiting time is much shorter. The advantage of a tank-less water heater on-site is that it takes up less space than a tankless water heater.

Are Point of Use Water Heater  Energy Efficient?

The answer to this question is simple. Whether you have an electric or gas water heater and whether it is equipped with a tank or a storage tank, this would be an environmentally-friendly choice.Heaters Energy Efficient

The reasons are simple:

  • The water heater at the site prevents wasted water from flowing down the drain, while the hot water flows from a remote water heater. It is not uncommon to wait a few minutes. Because a typical shower uses 2.5 gallons of water per minute, the amount of water wasted may vary.
  • The. The cold water that came out of the first tap was once hot. It was heated by a water heater and delivered to the pipes before the tap was turned off. The energy used to heat this water is lost because the water in the pipes cools down when the need for hot water is eliminated. The real consequence is that you are wasting both water and energy.

As a result, reducing water and energy waste will reduce electricity bills. Water heating systems are the second-largest consumer of energy in a home, and the US Department of Energy estimates that electric water heaters can contribute about 18 percent to the total electricity bill. a house.

Will a Point of Use Water Heater Save Money? Save Money

Many people are interested in installing a water heater in their home when they realize how well they can solve the problem of waiting for hot water. For those looking for convenience and comfort, this can be an easy solution.

If you also want to save money, consider the cost of purchasing and installing a water heater locally. The service life of water heaters in retail outlets usually ranges from 10 to 15 years, and for water heaters without tanks – up to 25 years. This saves a lot of time to save money on utility bills while still covering heating and POE installation costs.

There are many variables, starting with the layout and condition of your existing plumbing system, but you can expect to pay between $ 400 and $ 800 to install a water heater on-site, including a water heater, regardless of tank type or without.

According to the US Department of Energy, homeowners can save up to 50% in energy by using spot heating at each hot water outlet.

However, if you want to move into a new home in a year or two, you are not saving enough money on utility bills to offset the cost of purchasing the device and installing the device. Heat points of use. On the other hand, given the growing popularity of field-installed water heaters, they can be an added benefit to your home.

Service the water heater regularly

Onsite water heaters are scaled-down versions of whole house models and, like these water heaters, require regular maintenance. Whether the POE water heater is a tank or a version without a tank, it works most efficiently and has the longest lifespan when properly maintained.

water heater regular maintenance

How to Find the Best POU Water Heater

The growing demand for POU water heaters prompts more and more companies to manufacture them and offer consumers various branded options. The choice is great, but with dozens of brands available, it can be tough to find the best one for your situation, whether you prefer tankless or tank type.

Before checking the water heater control points, first, determine how much hot water you need. The sink requires less hot water than, for example, a kitchen sink or dishwasher. In addition to POU water heater reviews on the internet, you can find charts of gallons of water per minute that are typically required for showers, bathtubs, sink or faucet, dishwasher, and washing machine.

The amount of hot water a tank water heater can supply is determined by the size of its tank, while water heaters without a tank are measured by the number of gallons of water they can heat per minute. …

Domestic water heaters produce between 2.5 and 9.5 gallons per minute (gallons per minute). Many water heaters sold in large stores and online have flow rates of 0.35 or 0.5 GPM, which is not enough for some applications.

Best POU Water Heater

Installation of a water heater on-site

While this is a home improvement, most homeowners do not have the knowledge or equipment needed to properly install a POE water heater and are not familiar with local building code requirements. and the province. Warning: An improperly installed water heater can be dangerous to your home and family. Consult a licensed plumber.


Whole house water heaters have long been the method of making hot water in the home, and they are still used for most people. Nonetheless, tankless and tankless water heaters can add comfort, convenience, and efficiency to a home.

Each type provides instant or near-instant hot water and is environmentally friendly as it eliminates the loss of cold water from the tap and down the drain while you wait for hot water to drip. ” external water heater. Point-of-use water heaters also eliminate the energy waste that heats up the water, which later turns cold when it is trapped in a long hot water pipe.

 water heater

 Cutting down on wasted water and energy will also reduce utility bills, adding another benefit to the use of point of use water heater. It’s no wonder so many homeowners are committed to the growing demand for POU water heaters and more companies are manufacturing them than ever.house owners interested in adding one or more point of use water heaters should start by analyzing where the components are most needed and how much hot water will be required, Reducing water and energy losses also lowers your electricity bills, which is another benefit.


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