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

OEM Carrier Low Pressure Switch 7#OPN 22#CLS 50" — PH1REA036000AAWA

SKU: CARRIE-PH1REA036000AAWA-PRESSURE_SWITCH-HK02ZB044 Brand: Carrier
✓ Guaranteed to fit PH1REA036000AAWA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Low Pressure Switch HK02ZB044 for Model PH1REA036000AAWA

This is the genuine OEM Carrier low pressure switch (part number HK02ZB044), the factory-specified replacement for the Carrier PH1REA036000AAWA packaged heat pump unit. The pressure switch is a critical safety component in the refrigerant circuit — it continuously monitors system pressure and cuts operation if pressure drops below a safe threshold. When this switch fails or sticks open, you'll typically experience no cooling or heating, repeated system lockouts, or fault codes indicating a low-pressure trip. Replacing it with the correct OEM part restores proper system protection and performance.

  • Specs: Opens at 7 PSI | Closes at 22 PSI | 50" wire leads | 24V control circuit | Manufactured in Mexico to Carrier factory standards
  • OEM vs Generic: This OEM switch meets exact factory design life testing for maximum reliability. Generic alternatives often carry wider pressure tolerances that can cause nuisance trips or fail to protect the compressor from genuine low-pressure conditions.
  • Install difficulty: 2/5 — Recover refrigerant per EPA regulations before accessing the low-pressure port. Tools needed: manifold gauge set, 1/4" nut driver, and needle-nose pliers for spade connectors. Always verify system pressure after replacement before restarting the unit.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct drop-in replacement for the Carrier PH1REA036000AAWA packaged heat pump. Verify your existing switch's open/close pressure ratings and lead length against your unit's data plate before ordering. Our fitment team is available to confirm compatibility — reach out before you order if you have any questions. Order today and enjoy same-day shipping on all in-stock parts.

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 Low Pressure Switch 7#OPN 22#CLS 50" — PH1REA036000AAWA?
Yes. This is the factory-specified OEM pressure switch for the Carrier OEM Carrier Low Pressure Switch 7#OPN 22#CLS 50" — PH1REA036000AAWA. 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 Low Pressure Switch 7#OPN 22#CLS 50" — PH1REA036000AAWA?
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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