OEM Carrier Pressure Switch for PG8UAA060135ABJA Gas Furnace

The pressure switch is the furnace's draft-proving safety device. Before the gas valve opens, the inducer motor pulls a vacuum that this switch must sense and confirm; only then will the control board allow ignition. When the switch fails or its sensing hose plugs with condensate or debris, the furnace will short-cycle, the inducer will spin without firing the burners, and you'll get cold air, frequent on-off cycling, or a steady fault-code LED flash on the control board. A stuck-closed switch is even more dangerous because it can defeat the venting safety check entirely. This is a negative-pressure switch with normally-open contacts that close on a vacuum, typically actuating around -0.50 to -0.65 inches of water column for this 80% single-stage cabinet. Carrier sets the trip point to match the inducer and vent length of your exact furnace; the port size, hose barb, and bracket are model-specific. OEM matters here more than almost any other part. A generic switch with the wrong actuation set point will either trip too early (nuisance no-heat lockouts) or too late (a real venting fault goes undetected). Aftermarket switches often carry wider WC tolerances and weaker diaphragms that drift over time. Because this is a combustion-safety component, the genuine Carrier calibration is not worth gambling on. Install difficulty: 2 of 5. Tools: 1/4" and 5/16" nut drivers, a multimeter for continuity, and a small hose pick. SAFETY: shut off the gas valve and kill the furnace breaker before servicing, and inspect the sensing hose and inducer drain port for blockage while you're in there. 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 PG8UAA060135ABJA. 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.