While the size of the hot water system will more than likely vary depending on your specific needs, the average 4-person Australian home will need at least a 160 litre tank for a continuous electric system, or a 250-315 litre off-peak system. If you’re in the market for a gas tank, a 4-person house averages a 170 litre tank. 270-315 litre tank should be sufficient for heat-pump users. 

If your hot water heater is too small for your needs, you will find yourself continually run out of water. On the other hand, if your hot water system is too large for your needs, you are going to spend an unnecessary amount of energy (and therefore money) heating it. This is because your hot water system will keep maintaining the heat of your water, even when you are not using it.

You will need a licensed plumber to install this system. 

At a minimum, you will need a tempering valve, pressure limiting valve, duo isolation valve and a cold water expansion valve. We have put these together in a single kit to make things easy! View our complete installation kit here! 

There are so many choices! The first thing you need to consider is the type of system - electric, gas, or heat pump? We've put together some information on the different systems here.

It's important to ensure you choose the right plumber to install your hot water system. The last thing you want is a non compliant install on your brand new hot water system, which could shorten the life of the new hot water system and even void the warranty. We are often asked if a customer can install a hot water system...in all honesty the risks aren't worth it - and it's illegal! Best to call a licensed plumber to ensure it's done right.

Here's some important info to consider when choosing a plumber to install your new hot water system!