Replacement Ultraviolet Sterilizer Lamps

Replacement ultraviolet sterilizer lamps are the core service item that keeps a UV water disinfection system performing reliably. Even when a lamp still lights, UV output can decline over time. Replacing the UV lamp on schedule helps maintain disinfection performance and supports consistent operation.

Products on this page are designed for shoppers who already have a UV system and want to find the correct replacement lamp quickly.

How to Choose the Right Ultraviolet Sterilizer Lamp

The safest way to choose a replacement UV lamp is to match it precisely to your UV system. Most returns and performance issues occur when the lamp does not meet the system requirements (the lamp is the wrong one for the UV system).

Step 1: Match the UV system model number
Find the model number on the UV chamber label, controller, or original paperwork. Shop lamps that explicitly list compatibility with that model.

Step 2: Match the lamp part number
If your current lamp has a part number printed on it, match that number first.

Step 3: Confirm wattage and length
UV lamps are not interchangeable by wattage or length. Confirm that both specifications match your system requirements.

Step 4: Confirm connection style
Some lamps use different pin styles or end connections. Match the connection type to avoid fit issues.

UV Lamp Finder Table

Find the correct UV lamp for your system using our lamp finder chart.

UV Model UV Lamp Part # Quartz Sleeve Part # Lamp Length Lamp Wattage
Systems for Tap
VT-1 S212RL QS-212 8.3″ (21cm) 9 W
Systems for Home
VH150 S150RL-HO QS-150 9.8″ (25cm) 22 W
VH200 S200RL-HO QS-001 11.8″ (30cm) 25 W
VH410 / VH410M S410RL-HO QSO-410 20.0″ (51cm) 46 W
Systems for Professional
E4 Plus (650683) 602806 602733 24.8″ (63cm) 40 W
H (650651) / H Plus (650652) 602855 602975 27.05″ (69cm) 140 W
K (660001-R) / K Plus (660002-R) 602856 602976 36.6″ (93cm) 200 W
PRO10 (650647) 602854 602974 18.0″ (46cm) 100 W
PRO20 (650653) 602855 602975 27.05″ (69cm) 140 W
PRO30 (650659) 602856 602976 36.6″ (93cm) 200 W
PRO50 (660003-R) 602856 602976 36.6″ (93cm) 200 W
VP600 / VP600M S600RL-HO QSO-600 27.6″ (70cm) 58 W
VP950 / VP950M S950RL-HO QSO-950 41.3″ (105cm) 90 W

Replacement Schedule for Ultraviolet Sterilizer Lamps

Many UV lamps are replaced about once per year to maintain UV output, even if the lamp still turns on. Replace sooner if your controller shows an alarm, the lamp fails, or performance indicators drop.

Important Note about Using the Correct UV Lamp

Using the wrong UV lamp can reduce disinfection performance, trigger alarms, or cause fit and electrical issues. Always match system model compatibility, lamp part number, and the lamp’s wattage and length before ordering.

FAQs

Q: How do I know which replacement UV lamp I need?
A: Match your UV system model number first, then match the lamp part number. Confirm lamp length, wattage, and connection style.

Q: How often should I replace a UV lamp?
A: Many homeowners replace UV lamps about once per year because UV output declines over time.

Q: My UV lamp still lights. Do I still need to replace it?
A: Often yes. Lamps can produce less UV output even when they are still on.

Q: What happens if I use the wrong UV lamp?
A: Performance can drop, alarms may occur, and the lamp may not fit or function correctly.

Q: Do I need to replace the quartz sleeve, too?
A: Not always, but you should inspect and clean it during lamp changes. Replace it if it is etched, cloudy, cracked, or cannot be cleaned.

Match your system model and lamp part number, then replace your UV lamp on schedule to maintain strong, consistent disinfection performance.