Not all taps are created equal. If you’ve ever turned on a mixer tap in the middle and noticed your hot water cylinder kick in, you’ve experienced a design flaw most people don’t think about. That’s where cold start technology comes in, and it’s one of the easiest ways to save on energy without changing how you live.

Jennifer Price, Strategic Brands Manager for Plumbing World, explains how traditional mixers work. “When you put them in the middle position and you turn it on, it’s always part warm, part cold, so you’re activating your hot water as soon as you turn it on.” That means even quick hand washes or rinsing a toothbrush can trigger the hot water system, wasting energy every time.

Cold start taps are designed differently. In the middle position, they only run cold water. You need to deliberately turn the handle to the left to activate hot water. It’s a simple shift that puts you in control and avoids heating water when you don’t need it.

The beauty of cold start tapware is that it works just like a regular mixer. You won’t notice a difference in function, but over time, you’ll likely see it reflected in lower hot water usage and energy bills. It’s a small change with long-term pay-off, especially in busy households where taps are used constantly.

If you’re updating your tapware anyway, it’s well worth looking into. Ask your supplier or consultant which models include cold start functionality, and check that they suit your water pressure setup.

Disclaimer: This article is based on a podcast featuring insights from experienced professionals and is intended for general information and inspiration only. While we aim to share valuable guidance, please seek personalised advice from qualified professionals before making decisions about your property, finances, or renovation plans.