Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier Pressure Switch High Fire for PG8MAA060155AAJA — HK06WC091
Carrier

OEM Carrier Pressure Switch High Fire for PG8MAA060155AAJA — HK06WC091

SKU: CARRIE-PG8MAA060155AAJA-PRESSURE_SWITCH-HK06WC091 Brand: Carrier
✓ Guaranteed to fit HK06WC091 — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier High-Fire Pressure Switch HK06WC091 for Model PG8MAA060155AAJA

This OEM Carrier high-fire pressure switch (part number HK06WC091) is the factory-specified replacement for the Carrier PG8MAA060155AAJA gas furnace. The pressure switch monitors the draft inducer motor to confirm it is generating the correct negative pressure (vacuum) before allowing the ignition sequence to proceed. If this switch fails — or if the inducer isn't pulling sufficient draft — the furnace control board will lock out the system before gas is ever introduced, protecting against dangerous flue-gas backdrafting. Common failure symptoms include the furnace attempting to start and immediately locking out, an inducer motor that runs but produces no heat, or a fault code indicating a pressure switch stuck open or closed.

  • Specs: SPST (Single Pole Single Throw) | High-Fire configuration | Factory-calibrated W.C. (water column) trip point | Honeywell-manufactured Factory Authorized Part | Direct OEM fit for PG8MAA060155AAJA
  • OEM vs Generic: OEM pressure switches are calibrated to exact water-column trip points required by Carrier's IFC board logic. Generic or off-tolerance switches can cause nuisance lockouts or, worse, allow ignition under unsafe draft conditions — always use OEM on safety-critical components.
  • Install Difficulty: 2/5 — Power down the furnace and confirm inducer has stopped before servicing. Tools needed: 1/4" nut driver, needle-nose pliers, and a manometer or magnehelic gauge to verify draft after replacement. Photograph hose routing before disconnecting. Replace the rubber vacuum hose if it shows any cracking.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility & Supersession Note: Fits Carrier model PG8MAA060155AAJA gas furnace. Note that OEM part HK06WC091 has been superseded by replacement part HK06MC110; our listing is fulfilled with the current authorized replacement. Verify your existing switch's W.C. rating on the data plate or switch body before ordering. Questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today. In stock — ships 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 PG8MAA060155AAJA — HK06WC091?
Yes. This is the factory-specified OEM pressure switch for the Carrier PG8MAA060155AAJA — HK06WC091. 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 PG8MAA060155AAJA — HK06WC091?
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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online