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OEM Payne Pressure Switch High & Low for PA10JA04200GAGAA
Payne

OEM Payne Pressure Switch High & Low for PA10JA04200GAGAA

SKU: PAYNE-PA10JA04200GAGAA-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 PA10JA04200GAGAA

These OEM pressure switches — HK02ZA395 (High Pressure Switch) and HK02ZB028 (Low Pressure Switch) — are the factory-specified replacements for the Payne PA10JA04200GAGAA packaged unit. Pressure switches monitor the inducer motor's airflow by sensing negative pressure in the flue and combustion air circuit. When the inducer proves adequate draft, the switch closes and allows the ignition sequence to proceed. A failed pressure switch will lock out the system before a single ignition attempt, leaving you with a cold call and a fault code pointing to the inducer or venting circuit.

  • Specs: Includes both High Pressure Switch (HK02ZA395) and Low Pressure Switch (HK02ZB028) | Factory-calibrated W.C. (water column) ratings | Single-pole, normally open | 1/4" Hose port | 24V control circuit compatible
  • OEM vs Generic: OEM pressure switches carry exact W.C. trip points calibrated to the PA10JA04200GAGAA's inducer and heat exchanger design. Generic switches often use broad-range W.C. ratings that can cause nuisance lockouts or, worse, fail to detect a blocked flue — a serious safety concern.
  • Install difficulty: 2/5 — Shut off power and gas before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, and a U-tube manometer or magnehelic gauge to verify switch operation after replacement. Inspect the rubber hose port and tubing for cracks or blockages before installing the new switch.
  • Warranty: 1-year OEM factory warranty on both switches. Orders placed by 3 PM ship same business day from our warehouse.

Compatibility: Both switches are matched to the Payne PA10JA04200GAGAA packaged unit. Always verify OEM part numbers HK02ZA395 and HK02ZB028 against your unit's wiring diagram and data plate before ordering. If you are unsure which switch has failed, our HVAC parts team can help confirm fitment prior to purchase — same-day shipping available on all in-stock OEM Payne parts.

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 PA10JA04200GAGAA?
Yes. This is the factory-specified OEM pressure switch for the Payne PA10JA04200GAGAA. 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 PA10JA04200GAGAA?
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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