How Do I Know What Size of On-Demand Water Heater I Need?

On-demand water heaters are among the most popular tankless heaters that will provide continuous hot water o the kitchen and shower on demand. They are known to reduce utility bills by more than 30% due to the elimination of continuous energy losses. As you are animating the tank, you are cutting your energy bill. Using a tankless water heater, you ensure that you’ll never go out of help water. They are not just cost-effective, but they are space-saving, and they last up to 20 years. Considering all the benefits you will enjoy buying a tankless water heater, you don’t want one that is too small or too big because you don’t want to needlessly spend more energy.

 The amount of water an on-demand water heater can heat at any given time is limited. A small one wouldn’t be able to provide in a font smaller to meet your needs, and a big one makes you overpay. In this article, we are going to talk about the necessary consideration to choose the right size of on-demand-type water heater for your house.

What does an on-demand water heater do?

Before talking about the functions of a tankless water heater, we should take a look at traditional water heaters first. Traditional tank-style water heaters heat up to 50 gallons of water per minute. This type of heater keeps the temperature by occasionally turning on the burner when the temperature drops.

As a tankless water heater does not have a tank, they are smaller, and they can be installed on the wall. This type of heater heats the water when the tap is on. So it is possible to mount one or two Tankless water heaters in the basement or the utility room.

How to calculate the right size of an on-demand water heater?

There are a few steps you have to take to determine the size of your tankless water heater:

The Size Of Your House

There are different sizes of tankless water heaters on the market. If you are living in a big house, buying a smaller size model is not efficient, and it cannot provide you with enough hot water. 

Calculate temperature rise

You need to calculate a temperature rise, but do you know what temperature rise is? The temperature rise is a difference between the temperature of a grandmother and the preferred set temperature of your on-demand water heater. 

So first, you need to calculate the average Venture groundwater temperature to find the average temperature in your area. So you need to know the groundwater temperature in the coldest time of year.

Then you would be able to calculate the temperature rise. For example, if your preferred tankless set temperature is 120 and your groundwater temperature rise in the coldest time of the year is 30 degrees, the temperature rise is 90 degrees.

The rate of water flow

To calculate the rate of water flow, you need to estimate the rate of your faucets. For example, if you are using two showers, and it is possible to use them both at once, you need to know. The rate of flow all that shower head is 1.8 gal per minute, So if you are using two showers at the same time, you need a 3.6 gallons per minute flow rate.

It is not that uncommon to use a bathroom or kitchen tap while the two showers are used, so you might need the following information to calculate the rate of all the flow: 

• Bathroom faucet: 0.5- 1.0 GMP
• Kitchen tap: 2.00-6.0 GPM

Determine peak hot water demand

The next thing you need to think about is to figure out your peak hours. Peak hot water demand is the maximum amount of water you are going to need in your house. We know that it cannot be and specific and realistic number. The usual use age in the bathroom is 5 gallons per minute; in the kitchen, you are using an average oil of 3.5 gallons per minute, and your washing machine is using 2 gallons per minute. So do the math and estimate the maximum number of services you might need at any given time.

The number of your family 

In order to find and choose the right on-demand water heater, you need to calculate the number of your household at any given time, because let’s face it, if your tankless heater is not able to handle your household needs, it is no good.

Besides, you need to think about the number of times Ohio sage in your house, for example of how often you have guests over how often you have special occasions; if you have guests over often, you might take that into consideration when choosing a tankless water heater.

Why an On-demand water heater?

On-Demand water heaters are small units that will save space for you. We can hang them on the wall or install them in the basement. Since this type of water heater does not have a tank, the amount of energy used to heat up water is less than traditional water heaters.

 In fact, you will have hot water as you turn the tap on, and water will be instantly heated. So there is no room for wasting energy, and you will pay less for energy bills. An on-demand heater is going to provide you with enough hot water at any given time if you pick the right size. So before buying a Noritz, Rinnai, or Navien,

do the math and consider affection factors to get the right unit. If you need any further questions, call us, and we are ready to answer your questions 24/7.