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OEM Carrier Pressure Switch LC348TM401844 for Model LC348TM401844
Carrier

OEM Carrier Pressure Switch LC348TM401844 for Model LC348TM401844

SKU: carrier-pressure-switch-lc348tm401844 Brand: Carrier
$42.95

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Carrier Pressure Switch LC348TM401844 for Model LC348TM401844

This OEM Carrier pressure switch safeguards your furnace by verifying proper venting and draft before the burner fires. It monitors negative pressure created by the inducer motor; if the vent is blocked or the inducer fails, the switch opens and prevents ignition, protecting against dangerous flue gas spillage. Designed as a direct-fit replacement for Carrier model LC348TM401844, it restores correct sequencing and clears common pressure-switch lockout faults. Installation is moderate in difficulty: disconnect power, label and remove the two electrical terminals and the rubber sensing hose, unfasten the mounting screws, and install the new switch in reverse order—usually 20-30 minutes. Confirm the hose is free of condensate and seated firmly to avoid nuisance trips. Choosing a genuine OEM switch guarantees the correct pressure set point for safe, reliable operation that generics often miss. In stock and ships same-day on orders placed before 3PM CST. Get dependable heat and peace of mind with the exact part your furnace was built to use.

Compatibility

This part is compatible with Carrier model LC348TM401844.

Shipping

Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.

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 $75
  • 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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Pressure Switch fit my Carrier Model LC348TM401844?
Yes. This is the factory-specified OEM pressure switch for the Carrier Model LC348TM401844. 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 Model LC348TM401844?
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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