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OEM Carrier Pressure Switch 0.18
Carrier

OEM Carrier Pressure Switch 0.18" WC for PY4GNAB36090AA — HK06WC061

SKU: CARRIE-PY4GNAB36090AA-PRESSURE_SWITCH-HK06WC061 Brand: Carrier
✓ Guaranteed to fit HK06WC061 — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Draft Inducer Pressure Switch 0.18" WC for Model PY4GNAB36090AA — HK06WC061

This OEM Carrier draft inducer pressure switch is the factory-specified replacement for the Carrier PY4GNAB36090AA packaged heat pump unit. The pressure switch monitors negative pressure created by the induced draft blower motor to confirm proper venting before allowing the ignition sequence to proceed. When it fails — or when the hose, port, or inducer is compromised — the furnace or heat pump will lock out prior to ignition, leaving you with a cold system and a fault code. Part number HK06WC061 has been superseded by the current OEM replacement HK06MB061, both of which are cross-referenced and fully compatible.

  • Specs: 0.18" Water Column (WC) setpoint | SPST (Single-Pole, Single-Throw) | Draft proving / negative-pressure type | Honeywell-manufactured (OEM cross: IS20224-5236) | Factory ±tolerance matched
  • OEM vs Generic: Genuine OEM switches are calibrated to the exact WC rating specified by Carrier engineering. Aftermarket pressure switches frequently deviate from their stated WC rating, causing nuisance lockouts or — worse — failing to detect an unsafe venting condition. Always match the rated WC exactly.
  • Install difficulty: 2/5 — Power down the unit and confirm zero voltage at the board before starting. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, multimeter. Disconnect the rubber hose from the old switch, swap the switch, and reconnect. Always inspect the hose for cracks or blockages while you have access — a collapsed hose mimics switch failure.
  • Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day when ordered by 5 PM local time.

Compatibility: Engineered for the Carrier PY4GNAB36090AA packaged unit. Also fits select Bryant and Payne models sharing the same 0.18" WC pressure switch specification. Verify the WC rating printed on your existing switch before ordering — WC ratings are not interchangeable. Have a question about fitment? Our HVAC parts specialists confirm 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 PY4GNAB36090AA — HK06WC061?
Yes. This is the factory-specified OEM pressure switch for the Carrier PY4GNAB36090AA — HK06WC061. 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 PY4GNAB36090AA — HK06WC061?
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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