OEM Carrier 2-Stage Combination Gas Valve (EF33CW180) for Model PG8MVA060110AAJA

This is the factory OEM combination gas valve for the Carrier PG8MVA060110AAJA two-stage gas furnace. The gas valve is the critical safety and flow-control component that regulates natural gas delivery to the burner assembly in two discrete firing stages — low-fire for efficient part-load operation and high-fire for peak heating demand. When the valve fails, the furnace will typically lock out after ignition attempts, produce a no-heat fault code, or fail to light entirely. A weak or stuck valve can also cause delayed ignition, gas odor, or intermittent heating.

• Specs: 24V coil voltage | 3/4" NPT inlet & outlet | Natural Gas | Hi-Fire regulated @ 3.5" W.C. | Low-Fire regulated @ 1.5" W.C. | Two-stage (redundant) design | OEM Part Number: EF33CW180
• OEM vs Generic: This is a genuine Carrier OEM valve built to exact factory pressure and flow tolerances. Aftermarket gas valves frequently have imprecise pressure regulation, which can cause rough ignition, delayed light-off, or nuisance lockouts — avoid the callbacks and install the part your furnace was designed to use.
• Install difficulty: 3/5 — Gas valve replacement requires shutting off the gas supply at the manual shutoff, relieving line pressure, and carefully transferring wiring harness connectors and gas line fittings. Tools needed: adjustable wrench, pipe thread sealant (gas-rated), flathead screwdriver, manometer for outlet pressure verification. Important: Always perform a leak check with approved soap solution or detector after installation and verify manifold pressure before restoring power.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed as the direct OEM replacement for the Carrier PG8MVA060110AAJA two-stage gas furnace. Verify your existing valve's coil voltage (24V), inlet pipe size (3/4"), fuel type (natural gas), and firing pressure ratings before ordering. Our parts team is available to confirm fitment — contact us before you order if you have any questions.