Pentair 523037 120 watt BioShield UV replacement lamp for model 522637Pentair 120 Watt Bioshield UV Lamp for Model #522637, 523037 In stock$19899
Pentair 523037 120 watt BioShield UV replacement lamp for model 522637
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Pentair 120 Watt Bioshield UV Lamp for Model #522637, 523037

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$19899
In stock
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Quick overview

  • Fits model 522637 This is the 120 watt lamp for the BioShield unit sold as model 522637.
  • 120 watts Match the wattage to your unit. BioShield also uses a 50 watt lamp in the 522635 and a 150 watt lamp in larger models.
  • Genuine Pentair Part number 523037, the OEM lamp for the BioShield sterilizer.
  • Restores output UV lamps lose intensity long before they stop lighting, so a scheduled lamp change keeps the sanitizer doing its job.
  • Sleeve sold separately The 50.75 in. quartz sleeve for the 522637 is a separate part if yours is scaled or cracked.
  • Residential unit Made for the residential BioShield UV disinfection system.
Full description and specifications ↓

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Product details

The Pentair 523037 is the 120 watt replacement UV lamp for the residential BioShield UV disinfection sterilizer, model 522637. It is the genuine Pentair lamp.

Why lamps get changed on a schedule

A UV lamp keeps glowing long after its germicidal output has dropped, so a BioShield that looks like it is working may not be delivering the dose it was designed for. Replacing the lamp on the interval Pentair recommends keeps the system effective.

Match the wattage

BioShield lamps come in several wattages and they are not interchangeable. This 120 watt lamp is for the 522637. The 522635 uses a 50 watt high output lamp and larger units use a 150 watt lamp, so confirm the model number on your unit before ordering.

Related parts

The quartz sleeve that houses the lamp, 50.75 in. long for the 522637, is a separate part. If the sleeve is scaled or cracked, replace it with the lamp so the new lamp gets full transmission into the water.

Specifications
Brand Pentair
Manufacturer part number 523037
UPC 788379875923
Type Replacement UV lamp
Wattage 120 W
Fits Pentair BioShield UV sterilizer model 522637
Shipping weight 3.55 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which BioShield model does this lamp fit?
The 120 watt 523037 lamp fits the BioShield model 522637.
How do I know I need the 120 watt lamp and not the 50 or 150?
Check the model number on your BioShield. The 522637 takes this 120 watt lamp. The 522635 takes a 50 watt high output lamp, and larger units take a 150 watt lamp.
Does it include the quartz sleeve?
No. The 50.75 in. quartz sleeve for the 522637 is sold separately.
Is this a genuine Pentair lamp?
Yes. 523037 is the Pentair part number.
Ask your own question