Aftermarket Hi-Limit Rear Header for Hayward® H-Series® (160°F)

Optimum Pool TechnologiesSKU: HLS-H-HSER-160

Sale price$29.99


This generic replacement for the Immersion High Limit Switch is a high-quality alternative to that important switch in your Hayward® H Series® pool heater, and is used to detect when your water temperature has exceeded a safe level (160°F) and immediately opens the heat exchanger outlet when that happens. Refer to your Hayward® H Series® manual for signs that the Immersion Rear Header Hi-Limit switch has reached the end of its lifespan.

This Optimum Pool Technologies replacement sensor is triggered at 135°F.


  • Compatibility: Hayward® Universal H-series® low nox pool heater models h150fdn, h150fdp, h200fdn, h200fdp, h250fdn, h250fdp, h300fdn, h300fdp, h350fdn, h350fdp, h400fdn,h400fdp.
  • Also fits H-series® millivolt and electronic pool heater models h1501, h150p1, h2001, h200p1, h2501, h250p1
  • For Use With: Universal H-Series® Low NOx Pool Heaters and H-Series® Millivolt and Electronic Pool Heaters


  • Replaces: HMXHLI2932
  • Manufacturer: Optimum Pool Technologies, Inc.
  • Model: HLS-H-HSER-160
  • Shipping weight: 1 lbs.
Statements of compatibility here are 100% guaranteed by Pool Guy Supply, Inc. and are not attributable to or made by Hayward® or any other original equipment manufacturer (OEM) of products sold on this website.

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