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 critical safety device on your GB3AAV036075AAJA gas furnace, confirming proper draft inducer airflow before the control board permits ignition. If the switch fails or sticks, the furnace will lock out and refuse to fire, often showing a pressure-switch fault code, leaving you without heat. A genuine OEM replacement is calibrated to the exact factory trip point for this model, ensuring the furnace ignites only when venting is safe and free of blockages. Built to original Carrier specifications, it fits the existing mounting bracket and hose connections on the GB3AAV036075AAJA for an accurate, leak-free installation. The swap is relatively easy for a handy homeowner or technician: power down the furnace, disconnect the two wires and the rubber sensing hose, swap the switch, and reconnect. Always inspect the hose and vent for moisture or debris while you are in there. Orders placed before 3PM CST ship same-day, so you can restore safe, reliable heating quickly with a part matched precisely to your furnace.
This part is compatible with Carrier model GB3AAV036075AAJA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.