Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.
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This OEM Carrier pressure switch is a key safety control that verifies proper draft and combustion airflow before allowing the furnace to ignite. Engineered to exact factory specifications for Carrier model LC350TM400560, it ensures the inducer motor is venting exhaust correctly so the burners only light when conditions are safe. A faulty pressure switch commonly causes a furnace that attempts to start and then locks out, frequently indicated by a specific flashing error code on the control board. Replacing it restores safe, consistent ignition and stops nuisance shutdowns during cold weather. The installation is moderate and DIY-friendly: shut off power and gas, photograph the hose and wire connections, transfer them to the new switch, and mount it in about 20 to 30 minutes. No recalibration is needed. Genuine OEM construction provides accurate pressure sensing and durable, long-term reliability. This pressure switch is in stock and ships same-day on every order placed before 3PM CST, so you can get your heat back fast and avoid an expensive emergency service visit.
This part is compatible with Carrier model LC350TM400560.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.