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OEM Payne High Pressure Switch HK02ZA395 for PA1PNA018000AABA
Payne

OEM Payne High Pressure Switch HK02ZA395 for PA1PNA018000AABA

SKU: PAYNE-PA1PNA018000AABA-PRESSURE_SWITCH-HK02ZA395 Brand: Payne

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Payne High Pressure Switch HK02ZA395 for Model PA1PNA018000AABA

This OEM high pressure switch (part number HK02ZA395) is the factory-specified replacement for the Payne PA1PNA018000AABA gas furnace. The pressure switch monitors negative pressure created by the inducer draft motor to confirm proper venting before allowing the ignition sequence to proceed. When this switch fails or sticks open, the control board cannot verify that the flue is drawing correctly — resulting in a no-heat condition, repeated ignition lockout, or an inducer fault error code on your thermostat or control board.

  • Specs: High pressure switch | OEM part number HK02ZA395 | Factory-calibrated W.C. (water column) set point | Single-port hose connection | 1/4" quick-connect terminals | Engineered to exact Payne factory specifications
  • OEM vs Generic: OEM pressure switches are calibrated to the precise W.C. rating required by the PA1PNA018000AABA's inducer assembly. Aftermarket substitutes frequently use looser tolerances, causing nuisance trips or — more dangerously — failing to detect a true venting problem.
  • Install difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" nut driver, flathead screwdriver, and a manometer for verification. Disconnect the rubber hose and two electrical terminals, swap the switch, and reconnect. Always inspect the hose and port for blockages before condemning the switch.
  • Warranty: 1-year OEM factory warranty included. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: This switch is designed for the Payne PA1PNA018000AABA furnace. Confirm the OEM part number HK02ZA395 on your existing switch label or equipment data plate before ordering to ensure a correct fit. Not sure? Our HVAC parts specialists verify fitment at no charge — contact us before you buy. In stock and ready to ship today.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $75
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Pressure Switch fit my Payne PA1PNA018000AABA?
Yes. This is the factory-specified OEM pressure switch for the Payne PA1PNA018000AABA. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the pressure switch on my Payne PA1PNA018000AABA?
Difficulty: Medium (20–30 min)
Step 1: Turn off power. Step 2: Locate pressure switch near draft inducer. Step 3: Note tubing orientation. Step 4: Disconnect tubing and wires. Step 5: Remove screw, install new switch. Step 6: Reconnect tubing and wires, restore power.
My furnace shows a pressure switch error. What do I replace?
Furnace LED showing pressure switch error = switch not detecting draft inducer airflow. Try first: clear the rubber tubing to the switch (often clogged with condensation). If problem persists, replace the pressure switch.
Is this pressure switch compatible with Bryant or Payne too?
Many Payne parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Payne pressure switch?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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