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OEM Carrier Low Pressure Switch 312926-258 for CH16NA04800GBAAA
Carrier

OEM Carrier Low Pressure Switch 312926-258 for CH16NA04800GBAAA

SKU: CARRIE-CH16NA04800GBAAA-PRESSURE_SWITCH-312926-258 Brand: Carrier
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Texas CMBL #19328542014
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OEM Carrier Low Pressure Switch 312926-258 for Model CH16NA04800GBAAA

This OEM low pressure switch (part number 312926-258) is the factory-specified replacement for the Carrier CH16NA04800GBAAA condensing unit. The pressure switch monitors negative pressure created by the inducer motor to confirm adequate combustion airflow before allowing the ignition sequence to proceed. When this switch fails or becomes stuck open, the control board cannot verify proper draft and will lock out the system entirely — resulting in a no-heat condition that often mimics inducer or control board failure. Common symptoms include a blinking fault code indicating a pressure switch error, the inducer running continuously without advancing to ignition, or the furnace cycling off immediately after startup.

  • Specs: Low pressure switch | OEM part number 312926-258 | Factory-rated W.C. (water column) setting | Single-port hose barb connection | 24V control circuit compatible
  • OEM vs Generic: This factory OEM switch is calibrated to the exact W.C. trip point required by the CH16NA04800GBAAA. Aftermarket pressure switches frequently carry ±10–15% tolerance on actuation thresholds, which can cause nuisance lockouts or — more dangerously — allow ignition under insufficient draft conditions.
  • Install Difficulty: 2/5 — Disconnect power before servicing. Tools needed: 1/4" nut driver, needle-nose pliers, and a multimeter for continuity verification. Inspect the rubber hose for cracks or blockages before installing the new switch, as a clogged hose is a leading cause of pressure switch failure.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier CH16NA04800GBAAA condensing unit. Always verify the OEM part number 312926-258 against the label on your existing switch and cross-reference your unit's data plate before ordering. Our fitment specialists are available to confirm compatibility prior to purchase — same-day shipping available on all in-stock orders.

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 CH16NA04800GBAAA?
Yes. This is the factory-specified OEM pressure switch for the Carrier CH16NA04800GBAAA. 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 CH16NA04800GBAAA?
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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