Carrier 48DL is a complete heating and cooling system designed for outdoor installation. It is weatherproof and can be mounted on a slab or rooftop. The unit has a single gas, electrical, and condensate connection, and thermostat lead connections. A field-furnished filter rack must be located in the return air stream.

The Carrier 48DL is capable of providing both heating and cooling. The heating capacity ranges from 56,000 to 1,150,000 Btuh, and the cooling capacity ranges from 24,000 to 48,000 Btuh. The unit is also equipped with a number of features that make it easy to use and maintain, including a self-diagnostic system and a built-in condensate pump.