OEM Carrier Pressure Switch for PG9MXA060100AASA Gas Furnace

The pressure switch is a safety interlock that proves your Carrier PG9MXA060100AASA furnace's inducer (draft) motor is actually moving combustion air before the board allows the igniter and gas valve to fire. A rubber hose links the switch to the inducer housing; when the inducer pulls the correct vacuum, the switch closes and the ignition sequence proceeds. When the switch fails or its port and hose clog, the burners never light — you'll see the inducer spin up but no ignition, repeated short-cycling, or a steady pressure-switch-stuck-open fault flash. A switch stuck closed from welded contacts is equally unsafe and will also lock the furnace out. This is a genuine OEM pressure switch calibrated to a specific trip point measured in inches of water column (commonly in the -0.40 to -1.20 in. WC range depending on stage and altitude — match the set point stamped on the original switch and the data plate). It includes the correct port size and spade terminals for a direct factory fit. A pressure switch is a calibrated safety device, not a generic on/off switch. A generic part with a different or loosely toleranced trip pressure can nuisance-trip a healthy furnace or, far worse, close when draft is inadequate — permitting ignition with poor venting and risking carbon-monoxide spillage. OEM guarantees the factory-set WC trip point and reliable, repeatable proving. Install difficulty: 2/5. Tools: 1/4-inch nut driver or screwdriver and a multimeter for continuity. SAFETY — kill power at the breaker before servicing, inspect and clear the inducer port and hose while you're in there, and never jumper or bypass a pressure switch to test it; doing so disables a life-safety interlock. Ships the same business day from our stocked U.S. warehouse on orders placed before 3 PM CST, backed by a 1-year OEM warranty. Returns are hassle-free for 30 days on uninstalled parts.

Compatibility

This part is compatible with Carrier model PG9MXA060100AASA. Always verify the part number against your unit's data plate before ordering.

Why Choose OEM?

OEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.

Shipping & Returns

Same-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.