Excelight EL411L UV Lamp

Description

The Excelight EL411L UV Lamp is a genuine replacement ultraviolet germicidal lamp designed for use in select Excelight UV water disinfection systems. Engineered to emit concentrated UV-C light, this lamp helps neutralize harmful microorganisms — including bacteria, viruses, and cysts — providing chemical-free water disinfection for residential and light commercial applications.

Regular lamp replacement ensures your UV system consistently delivers the proper UV dose needed to keep your drinking water safe and reliable.

Key Features

• OEM-Grade Replacement Lamp – Designed to meet manufacturer specifications for performance, fit, and reliability in Excelight UV systems.
• Effective UV-C Output – Produces germicidal ultraviolet light at the optimal wavelength (≈254 nm) to inactivate microorganisms in flowing water.
• Long Service Life – Rated for approximately 9,000 hours (~12 months) of continuous operation — replace annually for best results.
• Easy Installation – Slide-in design allows quick and tool-free replacement during routine maintenance.
• Designed for Consistent Performance – Stable UV output helps maintain effective disinfection levels throughout the lamp’s service life.

Specifications

• Model: EL411L
• Lamp Type: Germicidal UV-C ultraviolet lamp
• Rated Life: ~9,000 hours (≈12 months)
• Application: UV water disinfection systems
• Manufacturer: Excelight
• Base: Standard 4-pin connection (varies by model)

Compatibility

The Excelight EL411L UV Lamp is compatible with the following Excelight UV systems:

• Excelight EL411AK whole-house UV system
• Excelight EL412AK (if specified in documentation)
• Other models in the Excelight product line that require EL411L lamps

✔ Always verify your system’s exact model number before ordering to ensure proper compatibility.

Applications

• Whole-House UV Water Treatment – Point-of-entry installation to protect all household taps and fixtures.
• Well Water Disinfection – Helps guard against microbial contamination from private water supplies.
• Municipal Water Protection – Adds an extra chemical-free protection barrier beyond standard chlorination.
• Light Commercial Use – Suitable for offices, cottages, and light commercial water systems.

Maintenance & Replacement

• Annual Lamp Change: Replace the UV lamp approximately every 12 months, even if it still illuminates — UV intensity diminishes with time.
• Handle With Care: Avoid touching the lamp’s glass surface with bare hands; skin oils can shorten lamp life.
• Quartz Sleeve Inspection: Check and clean the quartz sleeve when replacing the lamp to maintain maximum UV transmission. Replace the sleeve if it’s scratched, cloudy, or damaged.
• System Reset (if applicable): After changing the lamp, reset any lamp life timer or indicator on your UV control head per manufacturer instructions.

Why Replace Your UV Lamp Annually?

Even when a UV lamp continues to glow, its germicidal output declines over time. Replacing the lamp on a regular schedule — typically once per year — ensures your UV system delivers the proper UV dose for effective microbial inactivation, helping keep your water safe without adding chemicals.