OEM Carrier Pressure Switch with Bracket for Model PG8UAA036045ABJA

This OEM pressure switch with bracket (part number HK06WC090) is the factory-specified replacement for the Carrier PG8UAA036045ABJA gas furnace. The pressure switch is a safety device that monitors negative pressure (draft) created by the inducer motor before allowing the ignition sequence to proceed. When the switch fails — or when a blocked flue, cracked hose, or weak inducer prevents adequate draft — the furnace locks out before reaching ignition, leaving you with no heat. The integrated mounting bracket ensures a clean, rattle-free installation that matches the original factory assembly.

• Specs: OEM-specified W.C. (water column) rating matched to PG8UAA036045ABJA | Integrated mounting bracket included | Single-port diaphragm-style switch | Factory-calibrated trip point for reliable draft proving
• OEM vs Generic: This is a genuine OEM Carrier part, manufactured to exact factory tolerances. Generic pressure switches frequently carry imprecise W.C. ratings that cause nuisance lockouts or — worse — fail to detect a true venting failure, creating a safety hazard.
• Install difficulty: 2/5 — Shut off power and gas before beginning. Disconnect the vacuum hose and two electrical leads, unscrew the bracket, and reverse the process with the new switch. Tools needed: 1/4" and 5/16" nut driver, needle-nose pliers. Always inspect the rubber hose for cracks or blockages before completing the repair.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier PG8UAA036045ABJA 80% AFUE packaged gas furnace. Always verify the W.C. rating on your existing switch's data label before ordering to confirm a match. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — no guesswork needed.