Does UV sanitation actually reduce chlorine smell in pools?

[Freddie]

I’ve been reading about UV pool systems and how they work alongside chlorine. One thing I keep hearing is that they help reduce that strong chlorine smell. Is that really true or is it just marketing hype?

 

[Zephyr]

I’ve been reading about UV pool systems and how they work alongside chlorine. One thing I keep hearing is that they help reduce that strong chlorine smell. Is that really true or is it just marketing hype?

The smell usually comes from chloramines not chlorine itself. UV helps break those down so the water can smell fresher.

 

[Manikshaw]

I’ve been reading about UV pool systems and how they work alongside chlorine. One thing I keep hearing is that they help reduce that strong chlorine smell. Is that really true or is it just marketing hype?

I noticed a difference after installing UV but it wasn’t instant. Once my water chemistry was dialed in the smell dropped a lot.

 

[syedsam]

I’ve been reading about UV pool systems and how they work alongside chlorine. One thing I keep hearing is that they help reduce that strong chlorine smell. Is that really true or is it just marketing hype?

UV doesn’t replace chlorine but it does help it work more efficiently. Less combined chlorine usually means less odor.

 

[Freddie]

That makes sense now. Sounds like UV helps indirectly instead of magically fixing everything. Thanks for clearing that up.

 

[Yaw Tekle]

For me, that sharp smell is usually a sign of heavy bather load and not enough turnover, so it’s not something that just disappears overnight. UV can help reduce odor if the flow rate and contact time are right, the lamp output is still strong, and the sleeve stays clean, but if your circulation time is short or you dont run extra after a busy day, the smell comes right back, so it’s more of a smoothing tool than a magic fix, is your pool indoor or outdoor and do you get big weekend spikes?

 

[Zuzanna Dabrowski]

From what I’ve experienced, there’s some truth there but it’s often misunderstood. That strong smell usually isn’t from too much chlorine, it’s from chlorine that’s already tied up with waste. When an added system helps break that down, the water smells fresher. So you may notice less odor, but you still need solid basics in place for it to stay that way.

 

[Sean Whitaker]

I’ll be honest, I went down the UV rabbit hole last year after a couple of nasty swim parties left my pool smelling like a public locker room. It wasn’t that “too much chlorine” smell, it was that sharp combined chlorine bite that hangs in the air when the CC creeps up and the water hasn’t fully oxidized all the junk.

I added a UV unit to my pad, plumbed in after my Hayward Super Pump and before the heater, and what I noticed wasn’t magic, but it was real. My combined chlorine numbers stayed lower between shocks, especially after heavy bather load weekends. The big thing was keeping flow rate in spec so the contact time in the chamber was actually effective.

When my filter pressure climbed 6 psi and I ignored it, the smell started creeping back because turnover dropped and the UV wasn’t doing its job as well. Once I cleaned the cartridge and got circulation back where it should be, the air around the pool definitely felt cleaner.

So yeah, it can reduce that smell, but only if your free chlorine is still in range, pH isn’t drifting up into the high 7s, and your circulation is solid. UV seems to help knock down chloramines, not replace the basics. If someone’s expecting it to fix poor maintenance, they’ll probably be disappointed.