MaxAlloy™ aluminum indoor coils are specially designed to be installed with UPG furnaces or modular air handlers as part of a matched air conditioning or heat pump system. UPG indoor coils can be applied with indoor orifices and/or TXVs according to the application. Most indoor coil models are available as ''flex'' coils for installation of the specific expansion device in the field. Select skus are available with factory mounted TXVs or EEVs. Refer to the technical guide for the matched outdoor unit to determine the required indoor expansion device for your specific application.