Skip to content

A Publication for Trane Distribution Partners

Update on FER Coil Kit for 4MXC/4GXC

It was communicated on August 30, 2019 that FER Coil Kits would be needed to facilitate the combination of Trane and Ameristar FER-compliant, condensing furnaces with 4GXC and 4MXC evaporator coils. This remains true for 4MXC or 4GXC coils that have a serial (date) number prior to 19365*.

4MXC and 4GXC coils beginning with serial (date) number 19365* and beyond include a factory-installed heat shield and do not require the use of the MAY*FERCOLKITA accessory. If it is determined based on serial (date) number that a kit is required, please reference the information in the following Product Bulletin about kit model numbers and associated coil sizes.

Download Product Bulletin (PDF)

© 2025 Trane. All Rights Reserved

The information in this message is the property of Trane Technologies. This message is intended only for the use of Trane IWD and District Sales Office employees and may contain privileged and/or confidential information. If you are not the intended recipient of this message, you are hereby notified that any use, dissemination, distribution or copying of this message is strictly prohibited. If you receive this message in error, please notify us immediately by telephone or return email and delete the message, all copies thereof and any attachments. We thank you for your cooperation.