Bad-smelling hot tub water is almost always a chemistry problem, not a cleanliness problem. The smell tells you exactly what’s wrong. This guide walks you through the most common odors, what causes each one, and how to fix it without draining the tub unnecessarily.
A bad smell in your hot tub almost always points to one specific problem, and the type of smell tells you exactly where to look. This guide matches each odor to its cause and gives you a direct fix. Most problems resolve in under an hour.
A strong chlorine smell in your hot tub is almost never caused by too much chlorine. It’s usually chloramines, which form when sanitizer reacts with contaminants brought in by bathers. The fix is shocking the water, not adding less chlorine.
Bad hot tub smell is almost always a chemistry problem, a biofilm problem, or both – and the fix depends on which one you’re dealing with. This guide walks through every common hot tub odor, what’s causing it, and exactly how to fix it fast.