Hot water makes up a big part of your household’s energy use — often around 20–30% of your power bill. The good news is that a few simple changes can dramatically reduce your energy costs without sacrificing comfort.
Here are some practical ways to lower your hot water energy use and save money all year round.
Reduce the Temperature of Your Hot Water System
Most hot water units are set higher than they need to be, meaning you’re paying for energy you don’t use.
• Storage systems should be set no lower than 60°C to prevent bacteria growth.
• At the tap, your tempering valve delivers water at around 50°C, which is safe and comfortable.
If your system is running hotter than necessary, you’re wasting energy. A licensed plumber can check your temperature settings and ensure everything is running efficiently and safely.
Insulate Your Hot Water Pipes
Heat is often lost while travelling through uninsulated copper pipes, especially in older homes.
Insulating your hot water pipes helps and it’s a simple, inexpensive improvement that can have a big impact on your energy bills.
Fix Leaks Early
Even small leaks can lead to major energy losses. If your hot water unit is dripping, cycling on and off frequently, or constantly refilling, it’s using energy unnecessarily. Keep an eye out for:
• puddles or moisture around the base
• hissing or running water sounds
• higher-than-normal energy bills
• inconsistent water temperatures
Getting leaks fixed early can prevent costly repairs and reduce your energy usage immediately.
Shorten Your Shower Time
It seems simple, but it works.
Every minute saved can significantly reduce water and energy consumption — especially in households with multiple family members.
If you prefer longer showers, consider installing a water-efficient showerhead to keep energy use down without sacrificing comfort.
Service Your Hot Water Unit Regularly
A professionally serviced hot water system runs more efficiently and lasts longer.
A routine service helps:
• maintain correct pressure
• ensure valves are working properly
• reduces strain on the system
• improves heat transfer
Most hot water units should be serviced every 2–3 years, depending on the model and water quality in your area.
Use Off-Peak Electricity (If Applicable)
If you have an electric storage system, running on off-peak electricity can cut energy costs dramatically.
You’ll pay cheaper rates to heat your tank overnight, and most modern systems are designed to hold enough hot water for the next day.
If you’re unsure whether you’re on the right tariff, your electricity provider can confirm.
Improving your hot water efficiency doesn’t have to be complicated. Even small changes can add up to meaningful savings.
If you’d like help reducing your hot water energy costs, upgrading your system, or checking that your current unit is running efficiently, Tomlinson Plumbing can help.
We can service, repair and install all types of hot water units across Torquay, Geelong, Ocean Grove, Barwon Heads & surrounding areas.
Get in touch today to book a hot water inspection or installation quote ~ call 5261 2422.