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OEM Payne Pressure Switch High/Low for PA13PR04800GAHAA
Payne

OEM Payne Pressure Switch High/Low for PA13PR04800GAHAA

SKU: PAYNE-PA13PR04800GAHAA-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 & Low Pressure Switch for Model PA13PR04800GAHAA

These OEM pressure switches — HK02ZA395 (High Pressure Switch) and HK02ZB028 (Low Pressure Switch) — are the factory-specified replacements for the Payne PA13PR04800GAHAA packaged heat pump unit. Pressure switches prove that the inducer motor has created adequate airflow through the heat exchanger before allowing the control board to proceed with ignition. A failed pressure switch causes the system to lock out before reaching the ignition stage, with no heat delivered to the space. This is one of the most common no-heat diagnoses in the field.

  • Specs: HK02ZA395 — High Pressure Switch | HK02ZB028 — Low Pressure Switch | Factory-rated water column (W.C.) set points matched to PA13PR04800GAHAA inducer performance | SPST normally open contacts | 24V control circuit compatible
  • OEM vs Generic: OEM pressure switches use factory-calibrated W.C. trip points. Aftermarket substitutes frequently use broad-tolerance set points that can cause nuisance lockouts or — more dangerously — allow ignition under unsafe flue conditions. OEM is strongly recommended for pressure-switch replacements.
  • Install difficulty: 3/5 — Tools needed: 1/4" nut driver, flathead screwdriver, digital manometer (to verify W.C. after install), and a multimeter to confirm switch continuity. Always cycle power off at the disconnect before replacing. Photograph hose routing and wiring before removal.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before 3 PM EST ship same business day from our stocked warehouse.

Compatibility: Designed specifically for the Payne PA13PR04800GAHAA packaged heat pump. OEM part numbers HK02ZA395 and HK02ZB028 are sold individually — confirm which switch (high or low) has failed using a multimeter before ordering. Verify existing hose port size and bracket configuration against your unit's data plate. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — contact us before ordering.

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 PA13PR04800GAHAA?
Yes. This is the factory-specified OEM pressure switch for the Payne PA13PR04800GAHAA. 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 PA13PR04800GAHAA?
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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