York S1-2940A3541 120V-PRI 24V-SEC 40VA Transformer

The York S1-2940A3541 120V-PRI 24V-SEC 40VA Transformer is a York transformer for HVAC repair and replacement work. Use it when the part number S1-2940A3541 and the listed specifications match the equipment being serviced.

S1-2940A3541 Is an official OEM replacement part for York HVAC equipment.

Key Specs

• Voltage: 120V
• Product Type: Transformer

Fitment Notes

Captured equipment fit data references models including 2745-626, 2745-666, 2745A626, 2745A666, 2745C626, 2745C666, 2745D666, 2745E626, 2745E666, 2755-626, 2755-646, 2755-666. Verify the complete unit model and service manual before installation.

Expert Verdict

Reviewed by the SuperArbor Pro Desk: choose this part when the existing component label and unit documentation match S1-2940A3541 and the spec set above. It is best suited for targeted HVAC service repairs where exact fitment matters more than broad universal compatibility.

FAQs

What is the York S1-2940A3541 used for?

It is a transformer for compatible York HVAC equipment. Match the part number S1-2940A3541 and the equipment service literature before ordering or installing.

Which specs should I verify before purchase?

Verify the spec set shown for this part: Voltage: 120V; Product Type: Transformer. The replacement should match the existing component and the unit documentation.

Does the electrical rating need to match exactly?

Yes. Confirm voltage rating 120V against the failed component label. Do not substitute a different rating unless the equipment manufacturer allows it.

Which equipment models are referenced in the fit data?

Captured fit data references models such as 2745-626, 2745-666, 2745A626, 2745A666, 2745C626, 2745C666. Treat this as a fitment aid and verify the complete model list in the equipment documentation.

Who should install this HVAC component?

A qualified HVAC technician should install and test the transformer. Disconnect power first, follow lockout procedures, and confirm safe operation after replacement.

Safety and Installation Notes

Disconnect power before service. HVAC electrical and combustion-related components should be installed and tested by a qualified technician. After installation, confirm wiring, mounting, airflow or fluid routing as applicable, and normal system operation.