Hayward C-Spa/H-Series Pool Heater Pressure Switch | CZXPRS1105
Hayward Products
SKU: CZXPRS1105
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)
Related Products
- Hayward CZXPRS1105 (search)
- Hayward H100ID1 Heater Parts (search)
- Hayward H100IDP1 Heater Parts (search)
- Hayward Heater Pressure Switches (search)
- Filter Pressure Gauges (search)
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: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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