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OEM Carrier Pressure Switch w/ Bracket -0.33 WC for PG8UAA036065ADJA
Carrier

OEM Carrier Pressure Switch w/ Bracket -0.33 WC for PG8UAA036065ADJA

SKU: CARRIE-PG8UAA036065ADJA-PRESSURE_SWITCH-HK06WC090 Brand: Carrier
✓ Guaranteed to fit PG8UAA036065ADJA — or your money back. Terms

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OEM Carrier Pressure Switch with Bracket -0.33 WC for Model PG8UAA036065ADJA

This is the factory OEM replacement pressure switch for the Carrier PG8UAA036065ADJA packaged gas furnace. The pressure switch is a critical safety component that monitors the negative pressure (draft) created by the inducer motor at startup. When the inducer motor spins up and establishes proper venting, the pressure switch closes and signals the control board to proceed with ignition. If the switch fails or reads the wrong pressure, the furnace locks out before the burners ever fire — a common symptom being repeated ignition attempts with no heat output and a pressure switch fault code on the control board.

  • Specs: -0.33 W.C. (inches of water column) set point | Includes factory bracket for direct bolt-in installation | Single-port hose fitting | Compatible with 24V control circuit
  • OEM vs Generic: This is a genuine Carrier OEM part (HK06WC090) manufactured to exact factory tolerances. Generic pressure switches often have imprecise W.C. ratings that cause nuisance lockouts or, worse, allow unsafe venting conditions. OEM is the only recommended choice for safety-critical components.
  • Install Difficulty: 2/5 — Straightforward swap for experienced DIYers. Tools needed: #2 Phillips screwdriver, 1/4" nut driver, needle-nose pliers. Turn off gas and power before servicing. Disconnect the rubber hose from the inducer port, unplug the wire harness, unbolt the old bracket, and reverse to install. Always check hose and port for cracks or blockage before replacing the switch.
  • Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier PG8UAA036065ADJA packaged gas furnace units. Part number HK06WC090 also supersedes earlier part numbers including HK06WC088, HK06WC086, HK06WC076, HK06WC072, HK06WC073, and HK06WC074. Verify the W.C. rating on your existing switch before ordering if your model is not listed. Questions about fitment? Our HVAC parts specialists confirm compatibility before you buy.

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 $99
  • 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 PG8UAA036065ADJA?
Yes. This is the factory-specified OEM pressure switch for the Carrier PG8UAA036065ADJA. 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 PG8UAA036065ADJA?
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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