Hot water in a household is a necessity and at the same time a luxury. How would you feel if your water heater is broken? Or your teenage daughter is using a shower and you have to wait for hot water in the sink. Wouldn’t you appreciate an instant hot water and eliminates your time of waiting? Time like this, point of use water heater is appreciated.
What is it all about?
It is a water heating system that is directly install under the sink or in a closet. It is then connected directly to the plumbing near the faucet. Its purpose is to give instant hot water to a specific place where you want it available. It is a small electric appliance that is designed to supply hot water for a single fixture.
It is commonly called an under-sink point-of-use water heater. In most situation, point-of-use water heater is an additional unit to your central hot water system. However, it can also replace your water heater system using a series of point of use heaters.
Calculate your water consumption – If you know how much hot water your household consume at one time, you can decide what size of water heater you can install. To calculate it, you need to understand the flow rate. You can measure your flow rate in gallons per minute or called gpm. In a typical bathroom faucet, flow rate is between 0.5 -1.5 gpm.
What is your purpose of installation – Most of the time, point of use water heater is an enhancement to a standard household water heater. With point-of-use added to your standard water heating system, it will increase its efficiency. However, it can also be used as replacement to your water heating system through a series of point-of-use heaters. So, if you know your purpose of installing this kind of water heater, you can determine what size and model you’ll need.
Decide the area of installation – The location should have available power supply. Some electric POU water heater may requires a 220-volt or 110-volt high-amperage circuit. Others small unit may run to 120 volts plug-in. Thus, if you know the location and availability of the power supply and circuit, it will determine your choice of the unit and its capacity.
Decide whether tank or tankless – POU water heater can be tank-style or tankless. POU tank-style works just like the conventional tank water heater. It stores hot water in the tank waiting to be used. So, since the tank is small and heats limited water per hour, you may run out of water when used simultaneously. Tankless, however, heat and deliver hot water at the time you open your faucet.
There will be no issue of running out of hot water but there will be problem with the temperature. Its performance will be dependent on the flow rate. The higher the flow rate the lower the temperature. If your flow rate is about 2.0 to 2.5 gpm, most likely some electric tankless point of use unit is unable to provide right temperature. Also, if you are living in a colder climate.
Before installing POU water in your household, make sure this unit is what you really need. Its advantages are:
It eliminates the waiting time. Some houses that have a long run of pipe between the bathroom and the hot water heater. With POU, you don’t have to wait for hot water. It saves your precious time. Over 70 feet is where the water cools down.
Reduces water waste. Typically, when we open the faucet and there is no hot water, we let the faucet run until the hot water comes. Since, POU it produces hot water in an instant, no need to let the water running in the faucet.
It boost your central hot water system. The efficiency of your water-heating system will be enhance and augmented.