Same-day shipping on orders before 3PM CST · 15,000+ OEM Parts In Stock · Carrier · Bryant · ICP · Heil · Tempstar
Track Order | 1-800-NHP-HVAC | Trade Accounts

Menu

Home Shop All Account Cart
Home / OEM Carrier Pressure Switch for Furna...

IMAGE COMING SOON

Carrier

OEM Carrier Pressure Switch for Furnace Model LC350HE400812

SKU: carrier-pressure-switch-lc350he400812 Brand: Carrier
$48.95

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

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

OEM Carrier Pressure Switch for Furnace Model LC350HE400812

This OEM Carrier pressure switch is the safety device that verifies proper draft and venting before your furnace allows ignition. If your furnace won't start, throws a pressure switch fault code, or the inducer runs but the burners never light, a failed or stuck switch is a frequent cause. Calibrated specifically for Carrier model LC350HE400812, this switch senses the correct negative pressure from the draft inducer and closes its contacts to safely permit the ignition sequence. Replacement is a moderate DIY repair, generally 20 to 30 minutes: disconnect power, label and remove the wires and rubber hose, swap the switch, and reconnect. Choosing a genuine OEM pressure switch guarantees the exact pressure setpoint your furnace requires, preventing the false trips and unsafe operation that mismatched universal switches can cause. Get your system back to safe, reliable heating cycles. Orders placed before 3PM CST ship same-day for fast delivery. Count on authentic Carrier components for safety and longevity.

Compatibility

This part is compatible with Carrier model LC350HE400812.

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 Furnace Model LC350HE400812?
Yes. This is the factory-specified OEM pressure switch for the Carrier Furnace Model LC350HE400812. 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 Furnace Model LC350HE400812?
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