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OEM Carrier Pressure Switch 7#OPN 22#CLS 50
Carrier

OEM Carrier Pressure Switch 7#OPN 22#CLS 50" for PH1REA120000AAWA

SKU: CARRIE-PH1REA120000AAWA-PRESSURE_SWITCH-HK02ZB044 Brand: Carrier
✓ Guaranteed to fit PH1REA120000AAWA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Pressure Switch HK02ZB044 for Model PH1REA120000AAWA

This OEM pressure switch (part number HK02ZB044) is the factory-specified replacement for the Carrier PH1REA120000AAWA packaged heat pump unit. The pressure switch monitors inducer motor operation by sensing negative pressure (draft) in the heat exchanger flue path. When the inducer creates sufficient vacuum, the switch closes to signal the control board that combustion airflow is proven — allowing the ignition sequence to proceed. A failed or stuck-open pressure switch will prevent the system from advancing past the inducer stage, triggering a no-heat lockout fault on the control board.

  • Specs: Opens at 7 PSI | Closes at 22 PSI | 24V coil voltage | 50" lead length | Country of Origin: Mexico
  • OEM vs Generic: This is a genuine Carrier OEM part engineered to exact factory tolerances. Generic switches often use inconsistent setpoint calibration, leading to nuisance lockouts or — worse — unsafe operation due to insufficient draft proof.
  • Install difficulty: 2/5 — Power down the unit before servicing. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, manometer (for setpoint verification). Note tubing port orientation and lead polarity before disconnecting. Always check the rubber vacuum hose for cracks or blockages before condemning the switch.
  • Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered for Carrier model PH1REA120000AAWA packaged heat pump equipment. Verify inducer pressure setpoints on your unit's wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you buy for peace of mind.

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 PH1REA120000AAWA?
Yes. This is the factory-specified OEM pressure switch for the Carrier PH1REA120000AAWA. 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 PH1REA120000AAWA?
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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