Pentair Air Pressure Switch | 475987

Pentair Air Pressure Switch (475987) – Genuine OEM Replacement

Sold by ePoolSupply.com – Your Authorized Pentair Reseller

Ensure your Pentair MasterTemp or Sta-Rite Max-E-Therm pool heater operates safely and efficiently with the Pentair Air Pressure Switch (475987). This essential safety component monitors proper airflow and gas pressure, preventing the heater from igniting under unsafe conditions. If your heater is experiencing ignition failures, error codes, or intermittent operation, a faulty air pressure switch may be the cause—replace it today with this OEM-certified part for guaranteed compatibility and reliability.

Product Details:

✔ Brand: Pentair
✔ Part Number (SKU): 475987
✔ UPC: 788379878085
✔ Function: Detects proper airflow before ignition to prevent overheating and system damage
✔ Electrical Rating: Designed for low-voltage control circuit integration
✔ Compatibility: Pentair MasterTemp & Sta-Rite Max-E-Therm pool and spa heaters
✔ Construction: High-quality, durable materials for long-lasting performance

Why Choose the Pentair 475987 Air Pressure Switch?

✅ Genuine Pentair OEM Part – Guaranteed perfect fit and compatibility
✅ Essential Heater Safety Feature – Prevents heater operation under improper airflow conditions
✅ Fixes Ignition & Startup Issues – Resolves ignition failures and error codes related to airflow
✅ Durable & Weather-Resistant – Built to withstand high temperatures and moisture exposure
✅ Easy Installation – Simple wiring and mounting process for quick replacement

Brief History & Importance of the Air Pressure Switch

The Pentair Air Pressure Switch (475987) is a crucial safety component in Pentair MasterTemp and Sta-Rite Max-E-Therm heaters. This switch ensures that adequate airflow is present before ignition, preventing overheating, flame rollouts, and system malfunctions.

Over time, air pressure switches can fail due to debris buildup, corrosion, or mechanical wear, leading to heater startup failures, error codes, or inconsistent operation. Replacing a faulty switch restores proper heater function and safety compliance.

Installation Tips & Tricks

âš¡ WARNING: Always turn off power at the circuit breaker before performing any electrical work.

🔧 Step 1: Turn Off Power – Shut off the heater’s power supply to avoid electrical hazards.
🔧 Step 2: Locate the Air Pressure Switch – Found near the blower assembly or combustion chamber.
🔧 Step 3: Disconnect the Old Switch – Carefully remove the wires and tubing attached to the existing switch.
🔧 Step 4: Install the New Switch – Secure the 475987 switch in place and reconnect all wires and tubing correctly.
🔧 Step 5: Test the System – Restore power and check for proper heater startup without error codes.

💡 Pro Tip: If your heater still fails to ignite after replacing the air pressure switch, inspect the blower motor, tubing, and venting system for blockages or damage.

Buy with Confidence from ePoolSupply.com

As an authorized and preferred Pentair reseller, ePoolSupply.com guarantees that you receive 100% genuine OEM replacement parts with fast shipping and expert customer support. Avoid unreliable aftermarket alternatives—restore your heater’s safe operation with the Pentair 475987 Air Pressure Switch today!

🚚 Fast Shipping | ✅ Genuine Pentair Parts | 🔧 Expert Support