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OEM Carrier Pressure Switch 0.18
Carrier

OEM Carrier Pressure Switch 0.18" WC for PY3GNAA36090AA — HK06WC061

SKU: CARRIE-PY3GNAA36090AA-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 Furnace Draft Pressure Switch 0.18" WC for Model PY3GNAA36090AA

This OEM Carrier draft pressure switch (part number HK06WC061, superseded by HK06MB061) is the factory-specified replacement for the Carrier PY3GNAA36090AA packaged gas unit. The pressure switch is a critical safety device that monitors negative air pressure created by the inducer motor to confirm proper venting before allowing the ignition sequence to proceed. When this switch fails or sticks open, the furnace will lock out prior to ignition — often displaying a fault code — leaving you with no heat. Common symptoms include the inducer motor spinning but the furnace never advancing to the heating cycle, or repeated short-cycling with a pressure switch fault code.

  • Specs: 0.18" W.C. (inches water column) set point | Draft/inducer proving switch | Normally open | Compatible with Honeywell IS20224-5236 / 1639D2/B cross-reference | Supersedes HK06WC061 with updated part HK06MB061
  • OEM vs Generic: OEM pressure switches are factory-calibrated to exact W.C. tolerances. Generic aftermarket units can drift outside spec, causing nuisance lockouts or — worse — failing to detect true venting problems, creating a safety risk.
  • Install Difficulty: 2/5 — Turn off gas and power before servicing. Tools needed: Phillips and flathead screwdrivers, 1/4" nut driver, multimeter (to verify continuity across switch terminals with inducer running). Photograph tubing routing before disconnecting. The hose barb and single port make for a straightforward swap.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered for the Carrier PY3GNAA36090AA packaged gas/electric unit. Also fits select Bryant and Payne models sharing the same 0.18" W.C. pressure switch specification — always verify your unit's data plate and existing switch rating before ordering. Our HVAC parts specialists are available to confirm fitment before you buy. Order today and we'll ship the same business day.

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 PY3GNAA36090AA — HK06WC061?
Yes. This is the factory-specified OEM pressure switch for the Carrier PY3GNAA36090AA — 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 PY3GNAA36090AA — 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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