Air Conditioning:

The Inevitable Design Flaw

Most AC systems are oversized for satisfactory temperature control. But oversizing leads to short cycling – a phenomenon that causes humidity control, air quality, reliability, and maintenance problems. Learn more >>




What’s New:

Resolving Customer Complaints for High Humidity

By Jason Santos



Feature Article Reprint


Download the Article

Rawal Devices

Advancement in air conditioning

Rawal Devices is the manufacturer of highly efficient and cost-effective solutions that solve temperature and humidity control problems in industrial, institutional, and commercial building applications. Our APR Control makes any standard air conditioning unit (usually below 100 tons) a variable-capacity system. The Rawal device permits the system to extend the cycle of operation, continuously matching capacity to changing load conditions while keeping the system in a dehumidifying mode. Our unique combination of technology, expertise, and service ensures proper temperature and humidity control for greater indoor comfort, air quality, and energy savings.

Training Center


Pre-Installation Training

APR Control Product Presentation

Contractor Certification Class

Engineering and Design Concepts Training

APR Control Complies with Energy Codes

The APR Control has the ability to modulate system capacity to the ever-changing load conditions in the space, while eliminating or significantly reducing excessive cycling that leads to a rise in the space relative humidity. Read the white paper >>

Hot Topics:

APR Control vs. Hot Gas Bypass

achieving greater energy savings


Meeting Grow Room Environmental Control Challenges

creating optimal environment for plant growth


Resolving Customer Complains about High Humidity

meeting customer comfort needs