Community consensus strongly advises against buying generic "unbranded" bulbs from marketplaces like eBay, as they are often reported to be ineffective or even scams.
: Retailers like Home Depot and Lowe's are reliable for standard air purifier and HVAC replacement bulbs from brands like GermGuardian and Honeywell . where to buy uv bulbs
: For high-performance germicidal bulbs (UVC), retailers like 1000Bulbs and BuyUltraviolet.com are recommended for providing authentic brand-name replacements with quality assurance. where to buy uv bulbs
“The best 55w UV bulbs are jointly Phillips and Osram... I have two 55 watt UVs and only buy Philips bulbs now after buying cheaper ones that were crap.” Koi Forum UK · 5 years ago where to buy uv bulbs
