OEM Carrier 40VA Control Transformer for Model HUMCCSBP2212A — Part P201-2201

This OEM step-down transformer (part number P201-2201) is the factory-specified replacement for the Carrier HUMCCSBP2212A whole-home bypass humidifier. The transformer converts 120V line voltage to the 24V control-circuit voltage that powers the humidifier's solenoid valve, humidistat, and control board. When this component fails, the humidifier will become completely unresponsive — no humidistat call will trigger water flow, and the entire control circuit goes dead. A failed transformer is often misdiagnosed as a bad control board or solenoid, so always test transformer output voltage first with a multimeter before replacing costlier components.

• Specs: Input 120V AC | Output 24V AC | 40VA rated | Hardwired leads | Factory-matched impedance and insulation class for Carrier humidifier applications
• OEM vs Generic: This OEM Carrier transformer (P201-2201) is wound and insulated to exact factory specifications, ensuring reliable 24V output under sustained humidifier duty cycles. Generic transformers often fall short on VA rating or thermal protection, leading to premature failure in always-on humidifier applications.
• Install difficulty: 2/5 — Disconnect power at the breaker before starting. Tools needed: flathead and Phillips screwdriver, wire stripper, multimeter, wire nuts. Document all wiring connections before disconnecting. Verify 24V output at secondary leads with a multimeter after installation before reassembling the unit.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed specifically for the Carrier HUMCCSBP2212A bypass-style whole-home humidifier. Always verify your unit's data plate and existing transformer VA rating before ordering to confirm fitment. Our parts specialists are available to verify compatibility before you order — no guesswork required.