MaxAlloy aluminum indoor coils are specially designed for installation with our residential furnaces or modular air handlers as part of a matched air conditioning or heat pump system. Our XAM residential indoor coils can be applied with electronic expansion valves (EEVs). Refer to the Technical Guide for the matched outdoor unit to determine the required indoor expansion device for your specific application. XAM series full-cased coils are multi-positional and are suitable for vertical and horizontal applications.