Guide to Know Your Needed Size for Hot Water System

Hot Water System

Guide to Know Your Needed Size for Hot Water System

Need to replace your old hot water system? Has your family grown in recent years, and you’re constantly running out of water?

Before you go ahead and buy a new hot water system, there are a few things that you need to consider in mind. Firstly, you’ll need to know the size of the hot water system that you might need. This can be tricky, as there are many factors to consider.

Here are things you need to consider to know the size of your hot water:

1. Family Size

The most important consideration when choosing a hot water system is the number of people who live in the house. To determine the size of hot water, you need to consider your family’s bathing habits. 

For example, if your family has several showers and baths per day, you probably need a more extensive hot water system.

2. Number of Bathrooms

The amount of hot water needed in your family will also be affected by the number of bathrooms. A small hot water system will be enough if there is only one bathroom. However, when there are more bathrooms in a home, a more extensive hot water system is required to ensure everyone in the family can bathe at the same time without running out of hot water.

3. Hot Water Usage

The amount of hot water used regularly is also a critical indicator when choosing a hot water system. This is important because showers and baths use more hot water than sinks and washing machines. 

You can also install a hot water monitoring device or ‘water timer’ to record the number of minutes you use hot water in a day. You can program the timer to total the minutes used each day and then average it.

In addition, you can quickly get an idea of your hot water usage by looking at your previous bills. The size of your hot water system will be based on your average usage for the year.

4. Off-Peak Tariffs

If you have an off-peak tariff, your energy costs will be lower. Off-peak tariffs cut down on how much energy is used because the hot water system can’t be used during peak hours. Since the hot water system cannot be used during this period, you will use it at an off-peak rate which will be cheaper.

Furthermore, this tariff gives you a lower cost per kWh for energy used at night when there is insufficient energy demand. It can help many homes. Install an energy-efficient hot water system with off-peak rates. This will save you money.

5. Water Tension

The pressure at which the hot water system circulates can also assist you in determining the size. There are various levels of water pressure. The flow rate increases with increasing water pressure.

If your water pressure is low, you can use a minor hot water system. However, this will increase the system’s cost.


Which size hot water system to purchase – Are you ready to choose? Hopefully, this guide was able to help you to decide which hot water system is the best for you and your family.

More essential features to consider are the energy efficiency and water-saving capabilities of your hot water on Northern Beaches. Our team of experienced plumbing professionals will ensure that your home’s plumbing is kept in good working order at a reasonable price. Contact us today for a quote!

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