Hayward C-Spa/H-Series Pool Heater Pressure Switch | CZXPRS1105

Hayward Products SKU: HPPCZXPRS1105
Hayward C - Spa/H - Series Pool Heater Pressure Switch | CZXPRS1105 - Heater Parts - img - 1

Hayward C-Spa/H-Series Pool Heater Pressure Switch | CZXPRS1105

Hayward Products SKU: HPPCZXPRS1105
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Hayward CZXPRS1105 Water Pressure Switch (Heater Safety Switch) — H-Series Above-Ground Induced Draft & C-Spa XI

The Hayward CZXPRS1105 is a genuine OEM water pressure switch used on select Hayward pool/spa heaters. This safety switch verifies that the heater has adequate water flow/pressure before allowing ignition. If flow is too low (dirty filter, clogged basket, closed valve, air in the system, etc.), the switch helps prevent the heater from firing to protect internal components from overheating.

Fits / Compatibility

  • Hayward H-Series Above-Ground Induced Draft heaters (commonly including H100ID1 natural gas and H100IDP1 propane)
  • Hayward C-Spa XI spa heater applications (model dependent)
  • Also commonly referenced for select PSE heater applications (verify your model/parts diagram)

What It Fixes

  • Heater won’t fire due to a failed/out-of-range pressure switch
  • Intermittent shutdowns caused by unstable switch contact
  • Corroded, leaking, or damaged pressure switch discovered during service

Key Features

  • OEM Hayward replacement for reliable fit and correct safety operation
  • Critical heater protection component that helps prevent firing under low-flow conditions
  • Designed for pool/spa heater environments with heat and moisture exposure

Installation Notes

  • Turn off power to the heater at the breaker before servicing.
  • Always troubleshoot the cause of low flow first (filter/basket condition, valves, bypass settings, pump operation, air leaks).
  • If your heater uses an adjustable switch, adjust only per the heater service instructions after installation.
  • Installation is recommended for a qualified service technician.

Specs (Quick Reference)

  • Part Number: CZXPRS1105
  • Part Type: Heater Parts (Water Pressure Switch)
  • Pool Type: In-Ground (as commonly categorized by manufacturer listings)

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Maintenance Tips

  • If your heater trips on flow/pressure, clean the pump basket and filter first—restricted flow is the most common cause.
  • Keep valves fully open and verify bypass settings after any plumbing changes.
  • Maintain balanced water chemistry to reduce scale in the heater that can restrict flow over time.
  • If a new switch trips again quickly, diagnose the underlying circulation problem instead of continuing to replace parts.
Questions about returns? View our return policy.

Hours Of Operation: 

Monday - Friday: 8:00 am to 4:00 pm Phoenix Time

Saturday and Sunday: Closed

  • Orders costing more than  $300 WILL be required to have signature confirmation upon delivery.
  • Handling time is typically only 1 day.   
  • Any item ordered after 1pm Phoenix time, may not ship same-day.
  • Call us if you require expedited shipping and we can give you quotes based on your needs.

Return Policy:

  • All products, except as noted below, are eligible for return up to 30 days after receipt of item.
  • For returns, an RMA form must be filled out HERE or customers can call for additional help.
  • Shipping costs will be deducted from all returned items.
  • Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in. 
  • Items broken, damaged, or inoperable due to installer error will not be refunded.
  • Fill out the return form or give us a call to obtain an RMA and return shipping label.
  • There are no returns on the Pentair Colorsync 618031
  • No returns on pool cleaners.
  • No returns on opened seals and o-rings.
  • No returns on capacitors.
  • If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
  • All products denied upon arrival at customers house WILL be charged the cost to ship.
  • Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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