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 PG8MAA048135AAJA — HK06WC091
Carrier

OEM Carrier Pressure Switch High Fire for PG8MAA048135AAJA — HK06WC091

SKU: CARRIE-PG8MAA048135AAJA-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 PG8MAA048135AAJA

This is the OEM factory-specified high-fire pressure switch for the Carrier PG8MAA048135AAJA gas furnace. The pressure switch is a critical safety component that monitors the negative pressure (vacuum) generated by the draft inducer motor before allowing the ignition sequence to proceed. When the inducer is spinning at the correct RPM and the flue is drafting properly, the switch closes — signaling the control board that it is safe to open the gas valve and fire the burners. A failed pressure switch typically results in a no-heat condition: the inducer runs, but the furnace locks out before ignition, often flashing a fault code for "pressure switch open" or "inducer fault."

  • Specs: SPST (Single-Pole Single-Throw) | High-Fire rating | Factory-matched W.C. setpoint for PG8MAA048135AAJA | Honeywell-manufactured Factory Authorized Part
  • OEM vs Generic: OEM pressure switches are calibrated to exact water column (W.C.) specifications for this furnace. An off-spec generic switch may open too early or fail to close, causing nuisance lockouts or — worse — unsafe operation of the heat exchanger.
  • Install difficulty: 2/5 — Turn off power and gas before beginning. Tools needed: flathead screwdriver, needle-nose pliers, manometer (recommended for verification). Inspect the rubber hose for cracks or blockages before installing the new switch, as a clogged port is a common root cause of switch failure.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse. Note: HK06WC091 has been superseded — contact us and we will confirm the correct current replacement (HK06MC110) ships for your unit.

Compatibility: Fits Carrier model PG8MAA048135AAJA gas furnace. Also applies to select Bryant and Payne furnaces sharing this platform. Always verify the W.C. rating on your existing switch's label before ordering. Our fitment team is available to confirm compatibility before you buy — reach out before placing your order and we'll ship the correct part the same 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 PG8MAA048135AAJA — HK06WC091?
Yes. This is the factory-specified OEM pressure switch for the Carrier PG8MAA048135AAJA — 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 PG8MAA048135AAJA — 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