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OEM Carrier Pressure Switch LC348TM402770 for Model LC348TM402770
Carrier

OEM Carrier Pressure Switch LC348TM402770 for Model LC348TM402770

SKU: carrier-pressure-switch-lc348tm402770 Brand: Carrier
$44.95

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 LC348TM402770 for Model LC348TM402770

This OEM Carrier pressure switch is the genuine combustion-safety component for Carrier model LC348TM402770 gas furnaces, verifying proper inducer draft and venting before the burners are allowed to light. A failed or drifting switch triggers ignition lockouts and no-heat faults, or unsafely permits firing without adequate airflow—this exact-fit factory replacement restores correct pressure sensing and safe, reliable operation. Calibrated to Carrier's precise trip point and built with the right port configuration, it protects against the false trips and incorrect set points common to universal switches. Installation is a moderate repair suited to experienced DIYers and quick for technicians: disconnect power, remove the hose from the port, transfer the electrical leads, and mount the new switch, confirming the tubing is clear and free of condensate. Restoring an accurate pressure switch keeps your furnace both reliable and safe through the heating season. In stock and ready to ship same-day on every order placed before 3PM CST, so your Carrier system is protected and running fast.

Compatibility

This part is compatible with Carrier model LC348TM402770.

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 LC348TM402770?
Yes. This is the factory-specified OEM pressure switch for the Carrier Model LC348TM402770. 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 LC348TM402770?
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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