Description
Delta UV 1000‑2668 is the official OEM ultraviolet lamp used in several Delta UV residential and commercial pool/spa sanitizers, including the E‑Series, ES‑Series, EP‑Series, EA‑3H, and EA‑4H‑5 units. It is a single‑ended, high‑output germicidal UV‑C bulb designed specifically for these system
Key characteristics of the 1000‑2668 bulb:
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OEM Delta UV lamp (not a generic substitute)
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UV‑C output at 254 nm for disinfection
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Single‑ended 4‑pin configuration (common in Delta UV units)
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Compatible with E/ES/EP/EA‑3H/EA‑4H‑5 systems
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Designed for 1‑year service life under normal pool operation
Compatible Delta UV systems
The 1000‑2668 lamp is used in:
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E‑Series (E‑5, E‑10, E‑20)
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ES‑Series
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EP‑Series
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EA‑3H
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EA‑4H‑5
If your system label includes any of these model families, this is the correct replacement lamp.
When to replace the lamp
Even if the bulb still lights, UV‑C output drops significantly after about 12 months of use. Delta UV recommends annual replacement to maintain proper sanitation levels.
Replace the lamp if you notice:
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Reduced water clarity
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Algae growth despite normal chemistry
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System warning indicators
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A lamp older than 12 months
Installation notes
A few important points to keep in mind:
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Do not touch the glass with bare hands (oil reduces UV output)
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Replace the quartz sleeve if it is stained or cloudy
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Turn off power before servicing
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Ensure the O‑rings are clean and properly seated
