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OEM Carrier Pressure Switch w/ Bracket 0.18 WC — PG8DAA036050ABJA
Carrier

OEM Carrier Pressure Switch w/ Bracket 0.18 WC — PG8DAA036050ABJA

SKU: CARRIE-PG8DAA036050ABJA-PRESSURE_SWITCH-HK06WC090 Brand: Carrier
✓ Guaranteed to fit PG8DAA036050ABJA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Pressure Switch with Bracket (HK06WC090) for Model PG8DAA036050ABJA

This OEM pressure switch with mounting bracket is the factory-specified replacement for the Carrier PG8DAA036050ABJA packaged gas furnace. The pressure switch monitors negative pressure generated by the inducer motor to confirm proper venting before allowing the ignition sequence to proceed. When this switch fails or sticks, the control board receives no proof-of-draft signal and locks out the furnace entirely — leaving you with no heat and often a diagnostic fault code pointing to inducer or pressure circuit failure.

  • Specs: 0.18" W.C. (inches water column) setpoint | SPST (Single-Pole, Single-Throw) | Includes factory mounting bracket | OEM part number HK06WC090 | Replaces HK06WC072, HK06WC074, HK06WC076, HK660001, 310315-751, 310315-752, 326750-751
  • OEM vs Generic: This is a genuine Carrier OEM part built to exact factory W.C. tolerances. Aftermarket switches frequently carry wide pressure tolerances that cause nuisance lockouts or, worse, allow the furnace to fire with inadequate draft — a potential carbon monoxide risk.
  • Install difficulty: 2/5 — Shut off power and gas before starting. Tools needed: flathead screwdriver, needle-nose pliers, and a manometer (recommended to verify switch setpoint after install). Disconnect the hose and two wire leads, unbolt the bracket, swap the switch, and reconnect in reverse order.
  • Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PG8DAA036050ABJA packaged gas furnace. Also fits related PG8DAA and PG8UAA series models sharing the 0.18" W.C. pressure specification — always verify the W.C. rating on your existing switch before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back up fast.

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 0.18 WC — PG8DAA036050ABJA?
Yes. This is the factory-specified OEM pressure switch for the Carrier OEM Carrier Pressure Switch w/ Bracket 0.18 WC — PG8DAA036050ABJA. 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 0.18 WC — PG8DAA036050ABJA?
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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