OEM Carrier Furnace Pressure Switch for PY2PEB048115AB Unit

The pressure switch is a safety interlock that confirms the draft inducer is actually moving combustion air and venting flue gas before the board allows ignition. It senses negative pressure (vacuum) through a hose tapped to the inducer housing; a diaphragm closes a set of contacts only when proper draft is established. If venting is blocked, the inducer is weak, or condensate clogs the drain, the switch stays open and the furnace will not light. Symptoms include a furnace where the inducer spins up and then everything stops, no ignition on a heat call, and a control-board flash code pointing to a pressure-switch fault — often with a gurgling or whistling hose. This is an OEM Carrier/Bryant pressure switch calibrated to the PY2PEB inducer's specific set-point, stated in inches of water column ("WC). The factory switch trips at the exact vacuum the furnace was engineered for and uses the correct port count and hose-barb size for a leak-free connection. Why OEM matters here: a generic switch with the wrong "WC set-point can close too early — allowing ignition under marginal draft, a genuine safety risk — or too late, causing nuisance lockouts. Matching the calibrated trip point is exactly what this safety device exists to guarantee. Install difficulty: 2 of 5. Tools: 1/4" nut driver, manometer (to verify draft), nut driver for the mounting screws. SAFETY: cut furnace power at the breaker before disconnecting the wiring spades, and inspect the inducer drain and hose for condensate or blockage — a clogged vent, not the switch, is often the real cause. 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 PY2PEB048115AB. 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.