What Power of Tankless Electric Water Heater Do I Need for Family?

When it comes to tankless electric water heater, one of the biggest mistakes is buying a unit that is too weak to satisfy whole house hot water needs.

You don’t want one that is too small to supply whole house hot water needs, nor too big that power cord could not support the amperage when the instant electric water heater works.

The power of tankless water heater should be as appropriate to your household hot water needs as possible.

How many kW for JNOD tankless electric water heater?

To properly answer which power do you need, you have to figure out below points beforehand:

1. How’s the temperature of inlet water at coldest time?

2. How many degrees could the certain heater heat up at how much water per minute?

Example:

If inlet water flow has 2L/min, max temperature rise of a 5kW model could be up to max. 35℃, But in the relatively cold area, winter time the coldest water temperature is 0℃, plus 35℃, it could only reach 35℃, even it works with full power, there still not hot enough for shower use.

But for the warmer area, in winter, inlet water still have 12℃, then total it could heat up to 47℃, it was quite good enough for your shower use.

In JNOD, we have a professional team to help you choose models with a most suitable power, no matter for single shower use or multiple points use, we will help to fulfill your different hot water requirement!