What’s the right sized hot water heater for my family?

by | May 24, 2015

Recently I was contacted by a family looking for a plumber Hornsby area. The woman I spoke to had decided it was time to upgrade her water heater after finding her family was using up all the hot water ahead of their requirements. I definitely agreed! I’ve spent many years providing my plumbing service Hornsby-way and with a large number of families populating the area, hot water heater upgrades and installs are a common call-out.

When it comes to buying a water heater, there are three things to consider: how much water is used in your household, what kind of water heater you want to use and what you will be using to power it. Choosing a water heater that is the perfect size for your household will not only ensure you never have to endure a cold shower (bonus!) you will also save on energy costs. I’ve put together a quick run-down to help you decide which size is best for your circumstances.

So is my hot water heater the right size?

The first thing you will need to figure out is how much hot water you will need. As a general rule, each person in your household uses around 50L of hot water each day.  If you use hot water for washing your clothes and you run your dishwasher often it may even be more like 60L a head.

Going off how many litres of hot water you will need, you can then decide what type of hot water heater you will need:

  • Tank Water Heaters: The size of the storage tank is based on the number of people in your household. A family of four will generally need a 125-160L tank installed.
  • Continuous Flow or Instantaneous Water Heating: These are sized based on the amount of hot water outlets in the home rather than the number of people. The more taps you have that use hot water, the larger the system needs to be.

If you aren’t sure whether you want to use a tank or an instantaneous system your plumber Hornsby area, Wild Water Plumbing, are your hot water heating experts. We will help you by assessing your needs before you purchase your next heating unit.

The next question will be about how you power that hot water heater.

What kind of energy do you want to use?

If your hot water system uses off-peak electricity your storage tank will have to be a bit bigger than one which is powered using continuous electricity. Off-peak electricity use saves you money but also means that your hot water tank needs to be able to hold enough water to get you through the day.

Solar heating is a great, environmentally friendly option for your water heating needs. When it comes to sizing a solar heated unit the size of your household needs to be considered not only for the tank storage but also the for the number of solar panels needed. Wild Water Plumbing can do your solar hot water heater installation after discussing the costs involved if you’re thinking of making the greener switch!

If you use gas to heat your water the tank will need to be the same size as a continuous electric tank. Many believe that gas water heaters are the most efficient and sustainable method for moderate to large families.

So what’s the breakdown for your household look like?

Depending on the size of your household some of the options listed above may suit you and your needs better than others. In terms of efficiency and running costs, instantaneous systems are better suited to smaller households while a large, gas storage system would be a better decision for a large family. At Wild Water Plumbing we stock domestic and commercial water heaters from the most reputable brands. We are happy to help you make comparisons and we offer a comprehensive guarantee on the units and their installation.

Whether it be gas, electric, solar, storage or instantaneous, we have the expertise to take care of your next hot water heater installation. Our plumber Hornsby service has been helping families make decisions about which water heater is best for over a decade. Give us a call to discuss your needs and we can provide an assessment of your hot water needs before assisting you with the purchase and installation of your new heater.

Frequently Asked Questions
Can a plumber Northern Beaches help identify the cause of mould in my home?

Yes, a plumber Northern Beaches can assess whether mould is caused by hidden leaks, drainage issues, or rising damp. Identifying the source is essential before any treatment or mould removal Sydney solutions are applied.

What’s the difference between a blocked drain Northern Beaches and rising damp?

A blocked drain Northern Beaches or blocked drains Northern Beaches usually leads to water pooling or overflow, while rising damp causes moisture to travel up walls. A plumber North Shore can determine whether the issue is drainage-related or structural.

When should I call an emergency plumber for damp or leak issues?

If you notice sudden damp patches, strong odours, or signs of water damage, contact a northern beaches emergency plumber or emergency plumber North Sydney. Acting quickly can prevent further structural damage and mould growth.

Can a plumber Manly fix moisture issues caused by hidden leaks?

Yes, a plumber Manly or affordable plumber Manly can use advanced leak detection to locate and repair hidden leaks behind walls or under floors, preventing ongoing moisture problems.

Can damp issues affect other parts of my plumbing system?

Absolutely. Damp can lead to mould, pipe damage, and even impact systems like hot water units. A plumber Mosman, plumber Dee Why, or plumbers North Shore Sydney can inspect your system and recommend solutions such as pipe relining Sydney or repairs where needed.

Can a Central Coast plumber help diagnose rising damp and mould issues?

Yes, a central coast plumber or central coast plumbers NSW can assess your home to determine whether dampness is caused by leaks, drainage issues, or environmental factors, and recommend the right solution.

Do you service areas like Erina, Terrigal, and Umina for damp and leak issues?

Yes, our team includes plumber Erina, plumber Terrigal, and plumber Umina specialists, as well as erina plumbers and terrigal plumbers who understand local coastal conditions and common plumbing problems.

Can you fix plumbing and gas issues linked to dampness on the Central Coast?

Yes, we provide full plumbing central coast NSW services, including leak detection and repairs. Our team also includes a qualified gas fitter Central Coast to ensure all systems are safe and compliant.