OEM Carrier Pressure Switch HK02ZB038 for Model PH10JA036000AHAA

This is the genuine OEM Carrier pressure switch (part number HK02ZB038), factory-specified for the Carrier PH10JA036000AHAA packaged heat pump unit. The pressure switch proves that the inducer motor has established proper draft before allowing the ignition sequence to proceed. When this switch fails or sticks open, the control board receives no confirmation of inducer operation and will lock out the system — typically presenting as a no-heat call with the inducer running but no spark or gas valve opening.

• Specs: Closing pressure: 22" W.C. | Opening pressure: 7" W.C. | Lead length: 50" | SPST normally open | Factory OEM, cross-references PS80-02-F0074
• OEM vs Generic: This is the genuine Carrier factory part — not an aftermarket substitute. OEM pressure switches are calibrated to exact W.C. specifications. Generic alternatives often drift in setpoint over time, causing nuisance lockouts or, worse, unsafe draft conditions.
• Install difficulty: 2/5 — Shut off power at the disconnect before beginning. Tools needed: flathead screwdriver, needle-nose pliers, manometer (recommended for verification). Swap the two-wire spade connector leads and reconnect the rubber hose port. Always confirm proper inducer operation after installation.
• Warranty: 1-year OEM factory warranty against manufacturing defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered and factory-matched for the Carrier PH10JA036000AHAA packaged heat pump. Always verify your unit's data plate matches the 22# close / 7# open W.C. rating before ordering. Our technical team is available to confirm fitment — just reach out before you buy. Order today and get same-day shipping on this in-stock OEM part.