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OEM Carrier Pressure Switch 0.18
Carrier

OEM Carrier Pressure Switch 0.18" W.C. for PY3GNAA48115NA

SKU: CARRIE-PY3GNAA48115NA-PRESSURE_SWITCH-HK06WC061 Brand: Carrier
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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Furnace Draft Pressure Switch 0.18" W.C. for Model PY3GNAA48115NA

This is the OEM factory-specified draft inducer pressure switch for the Carrier PY3GNAA48115NA packaged gas unit. The pressure switch monitors negative pressure created by the inducer blower to confirm safe venting conditions before allowing ignition to proceed. When this switch fails or sticks open, the furnace will lock out during the inducer proving stage — typically before any spark or ignition attempt — leaving you with no heat. A failed pressure switch is one of the most common causes of furnace "lockout" fault codes.

  • Specs: 0.18" W.C. (water column) set point | Normally open | Single-port draft proving switch | Honeywell-manufactured (IS20224-5236 / 1938D2/B) | OEM part HK06WC061, superseded by HK06MB061
  • OEM vs Generic: This OEM switch is calibrated to the exact 0.18" W.C. factory set point. Generic switches often carry wider tolerances, risking nuisance lockouts or — more dangerously — allowing ignition under unsafe venting conditions.
  • Install Difficulty: 2/5 — Disconnect power and gas before servicing. Tools needed: flathead screwdriver, needle-nose pliers, multimeter (for continuity verification). Label or photograph tubing connections before removal. Replace inducer hose if cracked or brittle while you have access.
  • Warranty & Shipping: Backed by a 1-year OEM parts warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PY3GNAA48115NA packaged gas/electric unit. Also fits select Bryant and Payne models sharing the same inducer assembly. Always verify the 0.18" W.C. rating on your existing switch or unit data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us 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 PY3GNAA48115NA?
Yes. This is the factory-specified OEM pressure switch for the Carrier PY3GNAA48115NA. 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 PY3GNAA48115NA?
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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