You’ve installed an extractor fan. Job done, right? Not quite. One of the most common bathroom renovation mistakes is assuming that any fan will do the trick. But without the right placement, size and performance, even a brand-new fan can fall short.

Jennifer Price, Strategic Brands Manager for Plumbing World, says it’s not just about having a fan, it’s about how you use it. Many people assume their fan is working properly, when in reality it’s not pulling out enough moisture or clearing the room fast enough. That leaves steam lingering, which leads to mould, water damage and a bathroom that never really feels dry.

The most effective fans are sized correctly for the space and placed where the steam is. If it’s too far from the shower or underpowered for the room, it won’t do much. Fans should also be vented to the outside, not just into the roof cavity, or you’ll simply be moving moisture from one problem area to another.

It’s also a good idea to leave the fan running for a few minutes after you’ve finished showering. Some models come with timers or humidity sensors to make this automatic. If yours doesn’t, just switch it on while you shower and leave it on while you get ready. That alone can help prevent build-up and reduce cleaning time.

Ventilation isn’t just a box to tick. Done properly, it protects your bathroom and keeps it looking fresh for years to come. If you’re not sure whether your fan is doing the job, ask a professional to check its rating and placement.

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.