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OEM Carrier Pressure Switch for Carrier Furnace Model LC350HE400802
Carrier

OEM Carrier Pressure Switch for Carrier Furnace Model LC350HE400802

SKU: carrier-pressure-switch-lc3-50he400802 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 for Carrier Furnace Model LC350HE400802

This OEM Carrier pressure switch is the genuine safety control that confirms proper venting and combustion airflow before your Carrier furnace fires. It monitors draft from the inducer motor and tells the control board it is safe to ignite; when the switch fails or sticks, the furnace short-cycles or refuses to start, often showing a pressure-switch lockout fault. This factory part is calibrated to the exact trip point your furnace requires, restoring correct, safe sequencing without the false trips common to generic substitutes. It is a direct-fit replacement for Carrier model LC350HE400802, matching the original port configuration and electrical terminals. Installation is straightforward for a confident DIYer: cut power, label and transfer the hose and wire connections, and mount the new switch in the same location, usually 20 to 30 minutes. Always verify the vent and hoses are clear of condensate before reassembly. Order before 3PM CST and this pressure switch ships the same business day from stock, so you can clear the fault and restore heat quickly.

Compatibility

This part is compatible with Carrier model LC350HE400802.

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 Carrier Furnace Model LC350HE400802?
Yes. This is the factory-specified OEM pressure switch for the Carrier Carrier Furnace Model LC350HE400802. 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 Carrier Furnace Model LC350HE400802?
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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