How to Lower the Running Costs of Your Hot Water System

Many households don’t realise just how much energy goes into heating water every day. In homes across Australia, hot water heating system adds a noticeable amount to the power bill. 

The good news is that reducing the cost is absolutely possible. This blog explains what affects your costs and shows practical ways to lower them while still having a reliable supply.

How Do Hot Water Systems Work?

Before making changes to reduce costs, it helps to understand the basics. Many homeowners ask how the system actually works. Simply put, the system’s job is to heat and deliver hot water when you need it. Here’s the general process:

1. Cold water enters the system from the main water supply.
2. The system heats the water using electricity, gas, solar energy, or a heat pump.
3. The heated water is either stored in a tank or heated instantly when needed (tankless systems).
4. When you turn on a tap or shower, hot water flows through pipes to the outlet.

Different systems achieve this in different ways:

• Storage tank systems heat water and store it for later use.
• Instantaneous systems heat water on demand.
• Heat pump systems transfer heat from the air to warm water.
• Solar systems use sunlight to reduce energy consumption.

How to Reduce Your Hot Water Bills

1. Choosing the Right System Size

Choosing the right size helps reduce the cost of water heating. When a system is too small, it reheats water more often and uses more energy. If it’s too large, it heats more water than your household actually needs.

The goal is to match the system size to how much hot water your household uses each day. When you choose the right size, the system runs more efficiently and helps keep running costs under control.

2. Adjusting the Thermostat

Adjusting the thermostat will reduce energy use. Many systems are set higher than necessary, which increases the cost of heating water.

Setting the temperature to around 60°C keeps the system operate reliably. This simple adjustment can reduce running costs over time.

3. Taking Shorter Showers

Showers use a large amount of water. When showers run longer, the system needs to heat more water, which increases energy use. 

Shortening shower time helps reduce the demand on your systems. Even small reductions can lower the amount of energy used for hot water heating each day.

4. Installing a Water-Efficient Shower Head

A water-efficient shower head reduces how much water that flows during a shower. When less water is used, the system doesn’t need to heat as much. Over time, this simple upgrade can reduce the running costs of your hot water systems.

5. Fixing Leaking Taps Quickly

Leaking taps waste water and increase energy use if the leak involves hot water. Addressing leaks early helps avoid wasting heated water and reduces running costs.

6. Washing Clothes in Cold Water

Washing clothes with hot water isn’t always necessary, especially since many modern detergents work well in cold cycles. Using cold water more often reduces energy use, lightens the load on your system, and can help cut running costs.

7. Positioning the System Close to High-Use Areas

Where you place your hot water system can make a big difference. If it’s far from bathrooms or the kitchen, hot water can cool down as it travels through the pipes.

Putting the system closer to where you use hot water most often reduces heat loss, helps your system work better, and can lower your energy bills.

8. Insulating Hot Water Pipes

Insulating pipes helps keep water warm as it travels from the system to taps. Without insulation, heat escapes, and the system must work harder. Insulation retains heat and lowers the energy required to heat your water.

9. Upgrading to an Energy-Efficient System

Older hot water systems use more energy than newer models. Upgrading can help reduce the cost of heating water and improve reliability. 

10. Connecting Your System to an Economy Tariff

Some households lower their bills by connecting their hot water systems to an economy tariff, which heats water during lower-cost periods. Your electricity retailer can help you figure out the minimum tank size needed to take advantage of this tariff.

11. Maintaining Your Hot Water System Regularly

Regular servicing keeps your system working at its best. Over time, parts can wear down, and sediment can build up in the tank. Routine maintenance ensures the system heats water properly, prevents wasted energy, lowers running costs and reduces the need for hot water repair in Mosman.

Final Thoughts

Many households pay more than they need to simply because their system isn’t suited to their home. When your system is selected and installed correctly, the cost of heating water becomes far easier to manage.

If you’re planning to install a new system, Hero Plumbing can help. Our team of plumbers in Mosman can guide you in choosing the right type and size of system to save on energy costs while ensuring reliable hot water for your home.

Call us today at 02 9137 8549 to speak with our team, or book through our online form for installation and expert advice on the best system for your household.