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OEM Carrier Pressure Switch 0.18
Carrier

OEM Carrier Pressure Switch 0.18" WC for PY3GEAA42090AA — HK06WC061

SKU: CARRIE-PY3GEAA42090AA-PRESSURE_SWITCH-HK06WC061 Brand: Carrier
✓ Guaranteed to fit HK06WC061 — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Draft Pressure Switch 0.18" WC for Model PY3GEAA42090AA — HK06WC061

This is the OEM factory-specified draft proving pressure switch for the Carrier PY3GEAA42090AA packaged gas heating unit. The pressure switch is a critical safety device that monitors negative pressure created by the inducer (draft) motor. Before allowing the ignition sequence to proceed, it confirms the inducer is operating correctly and that combustion gases are being properly vented. When this switch fails — or when a blocked flue, cracked hose, or weak inducer fools it — your furnace will lock out before ignition, leaving you with no heat. Common symptoms include the inducer running but the furnace failing to light, a blinking fault code for "pressure switch stuck open," or a system that short-cycles immediately after the heating call begins.

  • Specs: 0.18" WC (inches water column) set point | SPST normally open | Compatible with 24V control circuit | Replaces OEM part HK06WC061 (superseded by HK06MB061) | Honeywell cross-reference: IS20224-5236
  • OEM vs Generic: This OEM-spec switch is factory-calibrated to the exact 0.18" WC trip point required by the PY3GEAA42090AA. Off-spec generic switches with loose tolerances can cause nuisance lockouts or — more dangerously — fail to detect a true venting fault, creating a carbon monoxide risk.
  • Install Difficulty: 2/5 — Turn off gas and power before servicing. Locate the switch on or near the inducer housing. Disconnect the hose port and two wire spade terminals (photograph first). Swap the switch and confirm the hose is free of cracks or blockages. Tools needed: flathead screwdriver, needle-nose pliers, and a manometer to verify set point if desired.
  • Warranty: 1-year OEM factory warranty. In stock and ships the same business day from our warehouse.

Compatibility: Verified fit for Carrier model PY3GEAA42090AA packaged gas heating unit. Also fits select Bryant and Payne models using the HK06WC061 / HK06MB061 pressure switch. Always confirm the 0.18" WC rating on your existing switch before ordering. Our fitment team is available to verify compatibility before you buy — no guesswork required.

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 PY3GEAA42090AA — HK06WC061?
Yes. This is the factory-specified OEM pressure switch for the Carrier PY3GEAA42090AA — 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 PY3GEAA42090AA — 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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