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OEM Payne Pressure Switch HK02ZA395 / HK02ZB028 for PA13PR03600GACAA
Payne

OEM Payne Pressure Switch HK02ZA395 / HK02ZB028 for PA13PR03600GACAA

SKU: PAYNE-PA13PR03600GACAA-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 HK02ZA395 / HK02ZB028 for Model PA13PR03600GACAA

This OEM pressure switch kit includes both the high pressure switch (HK02ZA395) and low pressure switch (HK02ZB028) factory-specified for the Payne PA13PR03600GACAA split-system heat pump. Pressure switches prove that the inducer motor is generating adequate airflow before the control board allows the ignition sequence to proceed. When either switch fails — or when tubing becomes cracked, clogged, or waterlogged — the system locks out before heating begins, often logging a pressure switch fault code on the control board.

  • Specs: High Pressure Switch (HK02ZA395) and Low Pressure Switch (HK02ZB028) | 24V control circuit | W.C. (water column) ratings factory-matched to PA13PR03600GACAA inducer assembly | SPST normally open contacts
  • OEM vs Generic: OEM switches use factory-calibrated trip points specific to this inducer and heat exchanger combination. Generic switches frequently carry wider W.C. tolerances, risking nuisance lockouts or — more dangerously — failure to detect a true blocked flue condition.
  • Install difficulty: 3/5 — Shut off power and gas before beginning. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (to verify continuity across switch terminals), and a flashlight to inspect the rubber pressure tubing for cracks or moisture. Photograph all tubing and wiring connections before disconnecting. Always inspect and clear the condensate drain and pressure tubing before replacing the switch — a blocked tube is the most common root cause of switch failure.
  • Warranty: 1-year OEM factory warranty on both HK02ZA395 and HK02ZB028. In stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Payne PA13PR03600GACAA 3-ton heat pump. OEM part numbers HK02ZA395 (high) and HK02ZB028 (low) are also cross-referenced to other Carrier family platforms — verify your model and data plate before ordering. Our fitment team is available to confirm compatibility before you buy. Order today for same-day shipping.

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 PA13PR03600GACAA?
Yes. This is the factory-specified OEM pressure switch for the Payne PA13PR03600GACAA. 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 PA13PR03600GACAA?
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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