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OEM Carrier Pressure Switch w/ Bracket .33 WC — PG8UAA036045ADJA
Carrier

OEM Carrier Pressure Switch w/ Bracket .33 WC — PG8UAA036045ADJA

SKU: CARRIE-PG8UAA036045ADJA-PRESSURE_SWITCH-HK06WC090 Brand: Carrier
✓ Guaranteed to fit PG8UAA036045ADJA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Pressure Switch with Bracket (HK06WC090) for Model PG8UAA036045ADJA

This is the genuine OEM replacement pressure switch with bracket for the Carrier PG8UAA036045ADJA packaged gas furnace. The pressure switch is a critical safety device that monitors the negative pressure (draft) created by the inducer motor before allowing the ignition sequence to proceed. If the switch fails to close — due to a faulty diaphragm, blocked condensate port, or cracked hose — the control board will lock out the furnace and prevent it from firing, leaving you with no heat. Typical symptoms include a fault code indicating a pressure switch open fault, the inducer running continuously with no ignition, or the furnace short-cycling before the burners light.

  • Specs: –0.33" W.C. (inches water column) set point | Includes factory mounting bracket | Single-port diaphragm-type switch | Factory-matched OEM tolerance for reliable draft proving
  • OEM vs Generic: Genuine Carrier OEM part HK06WC090 ensures exact W.C. calibration and bracket fitment. Off-brand switches often carry ±10–15% W.C. tolerances, leading to nuisance lockouts or — worse — unsafe operation if the switch closes under insufficient draft.
  • Install difficulty: 2/5 — Power down the furnace and wait for the inducer to stop before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers. Disconnect the rubber hose and two spade terminals, unbolt the old bracket, and mount the new assembly. Inspect the hose for cracks and the condensate port for blockage before reinstalling.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed as a direct OEM replacement for the Carrier PG8UAA036045ADJA packaged gas furnace. Part number HK06WC090 also supersedes legacy part numbers HK06WC088, HK06WC086, HK06WC076, HK06WC072, HK06WC073, HK06WC074, HK660001, 326750-751, 310315-751, and 310315-752 — always verify the W.C. rating on your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment 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 OEM Carrier Pressure Switch w/ Bracket .33 WC — PG8UAA036045ADJA?
Yes. This is the factory-specified OEM pressure switch for the Carrier OEM Carrier Pressure Switch w/ Bracket .33 WC — PG8UAA036045ADJA. 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 OEM Carrier Pressure Switch w/ Bracket .33 WC — PG8UAA036045ADJA?
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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Mike Rivera
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