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OEM Carrier Pressure Switch for PG9MXA036060AASA — 328529-751
Carrier

OEM Carrier Pressure Switch for PG9MXA036060AASA — 328529-751

SKU: CARRIE-PG9MXA036060AASA-PRESSURE_SWITCH-328529-751 Brand: Carrier
✓ Guaranteed to fit 328529-751 — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Pressure Switch for Model PG9MXA036060AASA (Part# 328529-751)

This is the genuine OEM replacement pressure switch for the Carrier PG9MXA036060AASA packaged gas unit. The pressure switch is a critical safety component that monitors the negative pressure (draft) created by the inducer motor before allowing the ignition sequence to proceed. If the switch does not close — due to a failed inducer, blocked flue, cracked hose, or a faulty switch itself — the control board will lock out the furnace and prevent any heating cycle from starting. Replacing a failed pressure switch with the correct OEM part restores proper draft-proving and safe ignition sequencing.

  • Specs: OEM Part# 328529-751 | Factory water-column (W.C.) rating matched to Carrier PG9MXA036060AASA | Single-port hose fitting | 24V control circuit compatible
  • OEM vs Generic: This is a genuine Carrier OEM switch calibrated to the exact W.C. setpoint required by the PG9MXA036060AASA. Aftermarket switches with incorrect W.C. ratings can cause nuisance lockouts or, worse, allow ignition under unsafe draft conditions — always match the factory spec.
  • Install difficulty: 2/5 — Shut off power and gas before servicing. Tools needed: 1/4" nut driver, small flathead screwdriver, multimeter (to confirm switch continuity). Inspect the rubber hose and condensate trap for blockages before condemning the switch — they are common root causes of pressure switch failure.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our stocked warehouse.

Compatibility: Engineered and factory-specified for the Carrier PG9MXA036060AASA packaged gas unit. Always verify the part number on your existing switch label before ordering to confirm W.C. rating and hose port configuration match. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you order — contact us today and get your part shipped the same day.

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 PG9MXA036060AASA — 328529-751?
Yes. This is the factory-specified OEM pressure switch for the Carrier PG9MXA036060AASA — 328529-751. 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 PG9MXA036060AASA — 328529-751?
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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