OEM Carrier Pressure Switch for PG8UAA060155AAJA Gas Furnace

The pressure switch on your Carrier PG8UAA060155AAJA furnace is the venting safety that confirms the inducer is moving combustion gases before the burners are allowed to ignite. As the inducer motor spins up, it draws a vacuum that closes the switch contacts; the control board waits for that closure before energizing the igniter and gas valve. If the switch is bad or senses a restricted flue, the furnace locks out and produces no heat — a deliberate safeguard against carbon monoxide spillage. Typical symptoms are the inducer running but the burners never lighting, short-cycling, or a control board flashing a pressure-switch fault. This is a normally-open negative-pressure switch with a factory trip point specified in inches of water column ("W.C.) and printed on the switch body. That set point is matched to this furnace's venting resistance. On a multimeter it should read open at rest and closed once the inducer establishes draft. OEM is critical for this part because the diaphragm calibration and exact "W.C. rating are a safety setting, not a generic value. Aftermarket switches often arrive with looser tolerances or the wrong trip point — too sensitive and it nuisance-trips a perfectly healthy furnace, too loose and it can close during an actual venting blockage, permitting combustion in an unsafe state. The genuine Carrier switch holds its rated calibration. Install difficulty: 2 of 5. Tools: 1/4" nut driver and a multimeter. #1 safety warning: kill power at the furnace breaker before servicing, and check the sensing hose for cracks, condensate, or a plugged port before condemning the switch — a blocked port imitates a failed switch and must be cleared, never bypassed. 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 PG8UAA060155AAJA. 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.