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

OEM Carrier Pressure Switch 22#CLS 7#OPN 50" Leads — PH10JA036000AGAA

SKU: CARRIE-PH10JA036000AGAA-PRESSURE_SWITCH-HK02ZB038 Brand: Carrier
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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Pressure Switch HK02ZB038 for Model PH10JA036000AGAA

This OEM pressure switch (part number HK02ZB038) is the factory-specified replacement for the Carrier PH10JA036000AGAA packaged heating unit. The pressure switch monitors the inducer motor's negative pressure to confirm that the heat exchanger is properly vented before allowing the ignition sequence to proceed. When this switch fails or drifts out of calibration, the control board receives no proof-of-draft signal and the system locks out before ignition — leaving you with a no-heat call. Common symptoms include the inducer running but the furnace never lighting, a pressure switch fault code on the control board, or the unit cycling off within the first 30 seconds of a heating call.

  • Specs: Close setpoint 22" W.C. | Open setpoint 7" W.C. | 50" lead wire | Single-port design | Factory-matched sensitivity for reliable draft proving
  • OEM vs Generic: This is a genuine Carrier OEM part manufactured to exact factory W.C. tolerances. Aftermarket pressure switches frequently ship with setpoint variance that causes nuisance lockouts or, worse, fails to protect against true venting failures — making OEM the only safe choice on a gas-fired appliance.
  • Install difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" nut driver, flat-head screwdriver, and a manometer (recommended to verify static pressure after install). Disconnect the hose port and two wiring terminals, swap the switch, and confirm hose is free of condensate blockage before restart.
  • Warranty: 1-year OEM factory warranty against manufacturing defects. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed for the Carrier PH10JA036000AGAA packaged gas/electric unit. Always verify the W.C. rating on your existing switch's label before ordering — multiple pressure switch ratings are used across the PH10JA series depending on configuration. Questions? Our HVAC parts specialists confirm fitment before you order — call or chat today.

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 22#CLS 7#OPN 50" Leads — PH10JA036000AGAA?
Yes. This is the factory-specified OEM pressure switch for the Carrier OEM Carrier Pressure Switch 22#CLS 7#OPN 50" Leads — PH10JA036000AGAA. 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 22#CLS 7#OPN 50" Leads — PH10JA036000AGAA?
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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