Cooltechx manufactures computer room air conditioners, including room-based CRAC and in-row equipment for defined IT loads and airflow designs.
Don't hesitate to contact us
| Selection area | CRAC / direct expansion | CRAH / chilled water |
|---|---|---|
| Cooling circuit | CRAC commonly uses a compressor-based direct-expansion refrigerant circuit. | CRAH uses a chilled-water coil supplied by a facility cooling system. |
| Site interface | Confirm refrigerant piping, condenser or heat-rejection arrangement and power. | Confirm chilled-water temperatures, flow, pressure and water connections. |
| Air distribution | Coordinate room supply and return paths or the defined row-level arrangement. | Coordinate the same air-side load and airflow requirements with the water-side design. |
| Equipment selection | Use sensible heat load, rating conditions, controls and service clearances. | Use the air-side duty together with the facility-water operating conditions. |
Compare CRAC suppliers by sensible capacity, site conditions and installation.
Room-based CRAC serves a defined room air-distribution design. In-row air conditioning targets a row-level air path. Match the equipment location to the rack layout, containment and actual heat-load distribution.
Specify the sensible heat load, return-air and target supply conditions, site ambient and operating duty. Compare model performance at compatible test conditions rather than nominal kW alone.
Confirm power, heat-rejection connections, air clearances, BMS signals, condensate and maintenance access. Agree standby and operating strategy with the data-center designer.
Review room-level precision air conditioning against the IT-room layout, airflow and integration scope.
Understand the boundary between facility cooling and the IT-side coolant loop.
Practical answers before equipment selection.
CRAC stands for computer room air conditioner. It describes equipment used to condition air for IT spaces; compressor-based direct-expansion systems are commonly described as CRAC units.
Precision air conditioning is a broader product description. A compressor-based computer-room unit may be described using both terms. Check the cooling circuit, application and exact product specification.
CRAC commonly refers to direct-expansion refrigeration equipment. A CRAH uses a chilled-water coil and depends on the facility water system. The project utilities and cooling architecture determine the appropriate interface.
Use the IT heat-load distribution, rack arrangement, containment, air paths and service access. In-row describes the installation arrangement; confirm whether its cooling circuit is DX or chilled water for the selected model.
Start with the IT sensible heat load and operating conditions, then review air distribution, future load, site ambient, heat rejection and the project resilience strategy. Room floor area alone is insufficient.
Humidity control, humidification and reheat are model- and configuration-specific. State the required temperature and humidity limits and confirm the proposed functions.
The current catalogue includes room-based and in-row air-conditioning equipment as well as related data-center items. Check each product page for its exact equipment scope and cooling circuit.
For a CRAC quotation or OEM configuration review, send the IT load, room and rack layout, supply and return conditions, outdoor design conditions, power, heat-rejection interface, BMS requirements and service constraints. Custom functions must be confirmed for the proposed model.
Share your project requirements with our engineering team.
