OEM Carrier Pressure Switch for PG8DAA036095ABJA Gas Furnace

The pressure switch is a combustion-safety device that confirms the inducer (draft) motor is actually pulling exhaust gases through the heat exchanger before the board allows ignition. On the Carrier PG8DAA036095ABJA gas pack, it senses negative pressure through a small rubber hose. When the switch fails, sticks open, or the sensing hose clogs with condensate, the furnace spins the inducer but never lights. Homeowners hear the inducer start and then nothing happens — no ignition, repeated clicking, and a 'pressure switch open' or 'stuck closed' fault that sends the unit into lockout. The result is no heat. This is a calibrated single-pole switch with a trip point measured in inches of water column (for example -0.40 to -0.65 "WC, stamped on the housing). It is normally open and closes only once adequate draft is proven. The set point must match your model's negative-pressure specification exactly. Pressure switches are calibration-critical. A generic switch with the wrong "WC trip point either trips too early — causing nuisance lockouts in cold or windy weather — or too late, which can allow ignition without adequate draft, a genuine carbon-monoxide hazard. OEM switches are matched to this gas pack's vent length and inducer airflow. Install difficulty: 2/5. Tools: 1/4" nut driver and a multimeter for continuity; also inspect and clear the sensing hose and inducer port. #1 safety warning: shut off the gas and disconnect power at the breaker before servicing, and never jumper or bypass a pressure switch to force the furnace to run — doing so defeats a combustion-safety interlock. Ships same business day from our stocked warehouse on orders placed before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.

Compatibility

This part is compatible with Carrier model PG8DAA036095ABJA. 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.