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OEM Carrier Pressure Switch for GA1AAD036050AAJA — HK06WC085
Carrier

OEM Carrier Pressure Switch for GA1AAD036050AAJA — HK06WC085

SKU: CARRIE-GA1AAD036050AAJA-PRESSURE_SWITCH-HK06WC085 Brand: Carrier

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Texas CMBL #19328542014
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OEM Carrier Pressure Switch for Model GA1AAD036050AAJA — HK06WC085 / HK06WC097

This is the factory OEM replacement pressure switch for the Carrier GA1AAD036050AAJA packaged gas/electric unit. The pressure switch monitors negative pressure created by the inducer draft motor to confirm safe venting conditions before allowing ignition to proceed. When this switch fails — or when the inducer is unable to generate sufficient draft — the control board receives no signal and the system locks out before the igniter even fires. Common symptoms include a furnace or packaged unit that runs the inducer but never advances to ignition, a blinking fault code indicating a pressure switch error, or a unit that attempts ignition repeatedly and then shuts down entirely.

  • Specs: Rated for low-voltage control circuit (24V) | W.C. (water column) rating factory-matched to GA1AAD036050AAJA inducer assembly | Available as standard switch (HK06WC085) or switch with mounting bracket (HK06WC097) for direct drop-in replacement
  • OEM vs Generic: OEM pressure switches are calibrated to the exact W.C. trip point required by your unit's inducer. Generic switches frequently carry wider tolerances, risking nuisance lockouts or — more critically — allowing ignition under unsafe draft conditions. OEM is always recommended for gas appliance safety components.
  • Install difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" nut driver, needle-nose pliers, and a manometer if verifying inducer draft. Disconnect the rubber hose and two low-voltage wires, swap the switch, and confirm hose is free of moisture or blockage before restarting.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse stock.

Compatibility: Designed specifically for the Carrier GA1AAD036050AAJA packaged unit. Order HK06WC085 for the pressure switch alone, or HK06WC097 if your original switch includes a mounting bracket. Verify your existing part number on the switch body or unit wiring diagram before ordering. Our fitment team is available to confirm compatibility prior to purchase — 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 info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Pressure Switch fit my Carrier GA1AAD036050AAJA — HK06WC085?
Yes. This is the factory-specified OEM pressure switch for the Carrier GA1AAD036050AAJA — HK06WC085. 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 Carrier GA1AAD036050AAJA — HK06WC085?
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 Carrier 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 Carrier 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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