What to Consider Before Your Next Hot Water System Installation

 Table of Contents

1.   Why the Right Hot Water System Matters

2.   How Much Hot Water Do You Use?

3.   Types of Hot Water Systems

4.   Energy Source Options

5.   Space and Location

6.   Upfront Costs vs Long-Term Savings

7.   Installation and Maintenance

8.   Energy Efficiency and Star Ratings

9.   Water Pressure and Flow Rates

10.                Safety Features to Look For

11.                Warranty and Service Support

12.                Final Thoughts

Why the Right Hot Water System Matters

You may not think about your hot water system much—until it stops working. Cold showers, dishes not getting clean, laundry not washing right—it can quickly mess up your whole day. That’s why picking the right system is not something to rush.

Choosing a system that fits your home, your water use, and your budget will save you time, money, and stress down the line. And let’s face it—no one wants to keep calling plumbers every few months.

How Much Hot Water Do You Use?

Start with a simple question: how many people live in your house?

A family of five uses a lot more hot water than a couple or someone living alone. It also depends on your habits. Long showers, big bathtubs, or using hot water for laundry all add up.

  • On average, each person uses 50 to 70 litres of hot water a day.
  • A family of four may use up to 250 litres daily just for showers and cleaning.

If your system is too small, it will run out fast. If it’s too big, you’ll waste money heating water you don’t use. That’s why size matters.

Types of Hot Water Systems

There are four main types:

1.   Electric Storage – These systems heat and store water in a tank. They’re simple but can be costly to run.

2.   Gas Storage – Similar to electric but use gas. Cheaper to run if you have access to gas.

3.   Continuous Flow (Tankless) – These heat water only when you need it. No tank, so you never run out.

4.   Solar – Use energy from the sun and have a backup like gas or electric. They save money long-term but cost more to install.

Think about your space, budget, and what power sources you have at home before choosing.

Energy Source Options

Electric systems are common, but not always the best choice for bills. Gas is cheaper in many places, but only works if you’re connected to the gas line. If not, you’ll need bottled gas, which can be tricky to manage.

Solar systems are great for cutting energy use. But they need roof space and a sunny location. Some homes might not be the right fit.

Stat 1: Homes with solar water systems can save 50–80% on water heating costs each year.

Space and Location

Where will you put the system?

Tanks take up space, so measure the area before you buy. Outdoor systems free up space inside, but they need to be protected from bad weather.

Continuous flow units are compact and usually mounted on walls. Great for small homes or units.

Solar systems need room for panels on the roof and a storage tank nearby. If your roof faces the wrong way or gets too much shade, they might not work well.

Upfront Costs vs Long-Term Savings

It’s easy to go for the cheapest option upfront. But that might cost more in the long run.

Electric systems are cheap to install but have high running costs. Solar and heat pump systems are more expensive at the start, but they pay off in the years ahead.

Stat 2: Heating water makes up about 25% of the average home’s energy bill.

So spending more upfront could mean lower bills for years to come.

Installation and Maintenance

Some systems are quick to install. Others need more time, planning, and even changes to your home’s plumbing or power supply.

Always use a licensed plumber or installer. A bad install can cost more later. Also, check how often the system needs servicing. Some need yearly checks, while others can go a bit longer.

If it breaks, can parts be replaced easily? Is there a local service team that can help?

These things matter, especially when it stops working in the middle of winter.

Energy Efficiency and Star Ratings

Systems in Australia often come with star ratings. More stars mean better energy use. It’s a simple way to compare different brands and models.

Solar systems and heat pumps are the best for energy savings. Gas systems also perform well. Older electric models usually rate the lowest.

Even if a unit costs more, if it has more stars, it might be worth it over time.

Water Pressure and Flow Rates

Not all systems can handle high water pressure. If you love strong showers, check the flow rate of the unit.

Continuous flow systems often let you adjust the flow and temperature more easily. They also provide water on demand, so no waiting for a tank to refill.

Low pressure can make showers feel weak and fill up a tub very slowly. It can be frustrating.

So always match your system to your home’s water needs.

Safety Features to Look For

Hot water can be dangerous if it’s too hot or the system fails.

Look for these features:

  • Thermostat control – So water doesn’t get hotter than it should
  • Temperature pressure relief valve – Prevents the tank from bursting
  • Child-safe locks or mixing valves – Great for families with kids

Some systems also come with leak alerts or can shut off if they overheat. Simple things that make a big difference.

Warranty and Service Support

A long warranty is a good sign. It shows the maker trusts their product.

Look for:

  • At least 5 to 10 years warranty on the tank
  • 2 to 3 years on parts and labor
  • Good local support and fast response times

Also, check what the warranty covers. Some only include parts, not labor. Others need you to service the system every year or the warranty becomes void.

It’s worth reading the fine print.

Final Thoughts

You use hot water every single day—for showers, dishes, laundry, cooking. It’s part of your life, even if you don’t think about it much.

So, when it’s time to get a new hot water system, take a little time to plan. Think about how much water you use, where it will go, what energy source works best for you, and how much you’re ready to spend.

Choosing the right one will make your life easier, your home more comfortable, and your bills a lot lower.

 

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