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OEM Carrier Pressure Switch 7
Carrier

OEM Carrier Pressure Switch 7" Open 22" Close for PY1PPA042080ACBA

SKU: CARRIE-PY1PPA042080ACBA-PRESSURE_SWITCH-HK02ZB038 Brand: Carrier
✓ Guaranteed to fit PY1PPA042080ACBA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Pressure Switch HK02ZB038 — 7" Open / 22" Close for Model PY1PPA042080ACBA

This is the genuine OEM Carrier pressure switch (part number HK02ZB038), factory-specified for the Carrier PY1PPA042080ACBA packaged unit. The pressure switch monitors inducer motor draft by sensing negative pressure in the flue circuit. When the inducer reaches proper airflow, the switch closes and signals the control board to advance ignition. A failed pressure switch causes the system to lock out before the ignition sequence begins — leaving you with a call for heat and no burner response.

  • Specs: Opens at 7" W.C. | Closes at 22" W.C. | 50" wire leads | Pressurestat-style single-port design | Cross-reference: PS80-02-F0074
  • OEM vs Generic: This is a genuine Carrier OEM part, matched to factory set-point tolerances. Off-brand substitutes frequently have drift in trip thresholds, causing nuisance lockouts or — worse — allowing ignition under unsafe draft conditions.
  • Install difficulty: 2/5 — Shut off power and gas before servicing. Tools needed: 1/4" nut driver, needle-nose pliers, and a manometer to verify draft pressure post-installation. Photograph existing hose routing and wiring before disconnecting the old switch.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed for the Carrier PY1PPA042080ACBA packaged gas/electric unit. Always verify the W.C. rating stamped on your existing switch before ordering — units of the same model series can carry different pressure switch ratings depending on production date and configuration. Questions about fitment? Our HVAC parts team will verify compatibility before you buy.

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 PY1PPA042080ACBA?
Yes. This is the factory-specified OEM pressure switch for the Carrier PY1PPA042080ACBA. 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 PY1PPA042080ACBA?
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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