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OEM Carrier Pressure Switch Kit for PG8MAA036045AGJA
Carrier

OEM Carrier Pressure Switch Kit for PG8MAA036045AGJA

SKU: CARRIE-PG8MAA036045AGJA-PRESSURE_SWITCH-HK02LB008 Brand: Carrier
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Texas CMBL #19328542014
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OEM Carrier Gas Pressure Switch Kit for Model PG8MAA036045AGJA

This OEM pressure switch kit contains all three factory-specified pressure switch components for the Carrier PG8MAA036045AGJA packaged gas furnace. The pressure switch is a critical safety device that proves the inducer motor is operating and creating adequate negative pressure before allowing the ignition sequence to proceed. When one of these switches fails — or its tubing collapses, clogs, or cracks — the control board interprets it as an unsafe condition and locks out the furnace, resulting in a no-heat call with a pressure switch fault code. Replacing the correct switch (or the full kit) restores normal operation quickly.

  • Included OEM Part Numbers: HK02LB008 (Gas Pressure Switch) | HK06WC091 (Pressure Switch) | HK06WC100 (Pressure Switch w/ Bracket) — all three are factory-matched for the PG8MAA036045AGJA and cover all switch positions on the inducer assembly.
  • OEM vs Generic: OEM Carrier pressure switches are calibrated to exact water-column (W.C.) trip points specified for this unit's heat exchanger and inducer combination. Generic switches frequently carry wider tolerances that can cause nuisance lockouts or, worse, allow the furnace to fire under marginally unsafe draft conditions.
  • Install Difficulty: 3/5 — Shut off gas and 24V power before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, and a digital manometer to verify W.C. pressure after installation. Photograph all hose routing before disconnecting. HK06WC100 includes a bracket for direct inducer housing mounting.
  • Warranty: 1-year OEM factory warranty on all three switches. Orders placed before 3 PM local time ship the same business day from our warehouse.

Compatibility: This kit is engineered specifically for the Carrier PG8MAA036045AGJA packaged gas unit. Always cross-reference the W.C. rating stamped on your existing switch and confirm part numbers against the unit's wiring diagram before ordering. Our fitment specialists are available to verify compatibility — contact us before you order if you have any questions.

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 PG8MAA036045AGJA?
Yes. This is the factory-specified OEM pressure switch for the Carrier PG8MAA036045AGJA. 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 PG8MAA036045AGJA?
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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