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> You need to replace your UV-C bulbs every 1,000 hours or so I don't think this should need to be the case. Low pressure mercury arc lamps (253.7nm) last 10,0
by bri3d 2y ago
> You need to replace your UV-C bulbs every 1,000 hours or so
I don't think this should need to be the case. Low pressure mercury arc lamps (253.7nm) last 10,000 hours in water treatment applications - a much more palatable replacement timeline (1 year) vs every few weeks!
The short-lifetime bulbs are usually 222nm Far-UVC bulbs, which are safe for human exposure. These shouldn't be necessary to treat air as part of an enclosed HVAC system. I feel that the hype around 222nm / "safe" UVC has done a disservice to just using "dirty" 253nm UVC, which kills everything just as well as long as you keep people from being able to look at it.
- schiffern 2y agoThanks for the correction. It's been a while since I looked into it! Even replacing bulbs every 1 year seems like a lot more than people are bargaining for. Most people seem to expect UV will be a "Set It And Forget It" solution (hence why they prefer it over filters), so they risk neglecting the necessary replacement interval.
- dzhiurgis 2y agoSounds like it needs software subscription added /s IMO people wouldn't mind replacing it if it was easy to access.