05/05/2026
1.5 litres of water. That’s what a standard shower dumps into your bathroom air every time it runs.
Without a good extractor fan, that moisture sits on your ceiling, turns into black mold, and eventually costs a fortune in rot repair.
I’m a sparky, not a builder. But we see the damage this causes in older South Auckland homes every single week.
Here's a quick test: turn your bathroom fan on and hold a single square of toilet paper up to the grill. If the fan can't hold the paper up, it’s not pulling enough air (or the motor is dying).
Takes 5 seconds to check. Might save you thousands in ceiling repairs.
Happy to give advice if anyone needs a hand checking theirs.
Adam
Arahia Electrical