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OEM Carrier Inducer Pressure Switch 0.18
Carrier

OEM Carrier Inducer Pressure Switch 0.18" WC for PY4GEAB48090NA

SKU: CARRIE-PY4GEAB48090NA-PRESSURE_SWITCH-HK06WC061 Brand: Carrier
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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Draft Inducer Pressure Switch 0.18" WC for Model PY4GEAB48090NA

This OEM draft inducer pressure switch is the factory-specified replacement for the Carrier PY4GEAB48090NA packaged unit. The pressure switch monitors negative pressure created by the inducer motor to verify proper venting before allowing the ignition sequence to proceed. When this switch fails or sticks open, the control board cannot confirm safe draft conditions — resulting in a no-heat lockout, a blinking fault code, or a system that attempts ignition repeatedly without firing.

  • Specs: 0.18" Water Column (WC) set point | SPST (Single Pole, Single Throw) | Normally open | OEM part HK06WC061, superseded by HK06MB061 | Replaces Honeywell IS20224-5236
  • OEM vs Generic: OEM pressure switches are calibrated to exact water column tolerances at the factory. Generic aftermarket units can drift ±0.05" WC or more, causing nuisance lockouts or — more dangerously — allowing ignition under unsafe draft conditions.
  • Install difficulty: 2/5 — Shut off power and gas before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, manometer (for verification). Photograph hose and wiring connections before disconnecting. Verify hose for cracks or blockage before blaming the switch.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Direct OEM replacement for Carrier PY4GEAB48090NA packaged units. Also fits select Bryant and Payne models sharing this 0.18" WC draft pressure switch specification — confirm your unit's data plate and existing switch rating before ordering. Questions about fitment? Our HVAC parts team verifies compatibility before you buy — order today and ship today.

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 PY4GEAB48090NA?
Yes. This is the factory-specified OEM pressure switch for the Carrier PY4GEAB48090NA. 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 PY4GEAB48090NA?
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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