The Carrier DX system is a conventional direct-expansion air conditioning / heat pump solution where refrigerant is directly circulated between the outdoor condensing (or compressor) unit and the indoor units.
How It Works
The outdoor unit compresses and condenses refrigerant, sending it through pipes to one or more indoor units.
Indoor units expand the refrigerant, absorb heat (cooling mode) or release heat (heating mode), and deliver conditioned air to the room.
After the cycle, refrigerant returns to the outdoor unit to repeat the process.
Main Components
Outdoor condensing / compressor units (air-cooled or water-cooled)
Indoor units (cassette, ducted, high-wall, under-ceiling, portable types)
DX coils / air-handling units kits to interface with larger ventilation systems.
Controls & regulation units (e.g. DX-Controller) for monitoring and operation.
Key Features & Benefits
Simplicity & direct refrigerant path — fewer stages (refrigerant directly does the work).
Flexibility in indoor unit types — you can choose the style (cassette, ducted, high-wall, etc.) that fits each room.
DX kits for integration — Carrier offers kits to connect DX systems to larger AHU (air-handling units), making it possible to combine DX with more central ventilation systems.
Wide capacity range — from small indoor units to larger commercial systems.
Good for retrofit or modular setups — easy to add or replace indoor units.
When to Use DX Systems
In residential or light to mid-size commercial buildings that don’t require full ducted central chillers.
Where zoning or multiple indoor units are needed.
Where you want direct control over each indoor space.
Request a Custom Design & Quote
Because every building and usage scenario differs, we recommend clients submit:
Floor plans or layout drawings
Type of rooms / zones and their sizes
Desired usage (cooling, heating, ventilation)
We will then design and specify the appropriate Carrier DX system for your building — selecting matching indoor/outdoor units, control strategies, and wiring — and provide a reliable quotation.
