Description
The AquaFlo Genesis RL-820 (40040015) UV Lamp is a high-output germicidal UV replacement lamp engineered for use in AquaFlo Genesis residential UV water disinfection systems. Designed to restore effective UV-C output after regular use, this lamp is essential for maintaining chemical-free microbial inactivation and protecting your household water from bacteria, viruses, and protozoa.
Key Features
- OEM-Compatible Replacement: Designed specifically to meet original manufacturer specifications for the AquaFlo GEN 4-11, GEN 5-10, and GEN 6-10 UV systems.
- High-Output UV-C Germicidal Light: Emits powerful UV-C light to disrupt DNA of microorganisms and help prevent biological contamination.
- Long Service Life: Rated for approximately 9,000 hours (~12 months) of continuous use — replace annually for optimal performance.
- Standard 4-Pin Base: Ceramic 4-pin stepped base for secure alignment in the lamp holder.
- Includes Reset Key (varies by seller): Some versions include a key to reset your UV controller timer upon lamp replacement.
Specifications
- Part Number: 40040015 / RL-820
- Wattage: 39 Watts
- Length: 32.3″ (820 mm)
- Rated Life: ~9,000 hours (~1 year)
- Base: 4-pin ceramic stepped base
- UV Output: UV-C germicidal (≈254 nm) standard for water disinfection
Compatibility
This lamp is compatible with the following UV water disinfection systems:
- AquaFlo Genesis GEN 4-11
- AquaFlo Genesis GEN 5-10
- AquaFlo Genesis GEN 6-10
- (Always verify system model to ensure proper fit.)
Applications
- Whole-House UV Water Disinfection: Primary germicidal lamp for point-of-entry UV systems.
- Well & Municipal Water Treatment: Helps reduce microbial contamination without chemicals.
- Residential Water Safety: Ideal for homes, cottages, or other potable water applications requiring biological protection.
Maintenance & Replacement
- Annual Lamp Change: Replace the lamp approximately every 12 months to maintain the correct UV dose — even if the lamp still illuminates.
- Clean Quartz Sleeve: During lamp changes, inspect and clean the quartz sleeve to maintain maximum UV light transmission.
- Reset Timer: If your system uses a timer/lamp life indicator, use the included reset key (if provided) to restart the service cycle.
Why Replace Your UV Lamp?
UV lamps lose germicidal intensity over time, even while still lighting. Replacing the AquaFlo Genesis RL-820 (40040015) annually helps ensure your UV system continues delivering effective chemical-free disinfection — protecting your water from harmful microbes and keeping drinking water safer for your household.

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