Low-pressure hot water systems are commonly found in older homes in New Zealand. These systems rely on a pressure reducing valve to restrict the incoming water pressure to the cylinder, resulting in lower hot water pressure throughout the home.

In areas with colder climates, homes with fireplaces may utilize a wet back system in conjunction with a low-pressure cylinder to heat the water.

If there is a noticeable difference in water pressure between hot and cold taps or showerheads, it may indicate the presence of a low-pressure hot water system. The good news is that upgrading to a mains pressure system during a cylinder replacement can easily remedy this issue, providing the benefits of higher hot water pressure throughout the home.