The APR Control makes any standard A/C Direct Expansion unit a variable-capacity system - extending its cycle of operation and continuously matching capacity to changing load conditions. In service scenarios, we can assist you finding solutions using the APR Control with existing equipment and controls - APR Control offers more reliable compressor life - accepted by major OEM manufacturers.We invest in your success - our goal is to build trust, not dependence on costly replacements! Our 50+ years of experience will help with unit selection and system design, enabling you to achieve innovative HVAC solutions.
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About Us
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Davis Rawal, inventor of the Rawal Device, was one of those creative engineers who could uncover cost-effective solutions to unusual problems. Rawal's ingenuity ranged from inventions that resulted in patents (a very early air-to-air heat exchanger) to solutions that provided an edge in winning and completing a competitive project (a severely space-constrained DX evaporator air handling unit).
Why APR
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Air conditioning applications suffer from systemic problems, such as dehumidification, that are not easily solved with current equipment and controls capabilities. Even modern air conditioning systems are unable to vary system capacity to match changing load conditions other than with expensive technologies.
APR vs. Variable Speed Technology
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Technicians & contractors are curious about how the APR Control compares to similar technologies that provide system compressor and capacity modulation. The APR can be installed on both new and retrofit projects; allowing you to keep existing in-place systems and still achieve variable capacity at a reduced budget.
APR Control Technical Information
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The Rawal APR Control provides continuous capacity modulation for all sizes and configurations of air conditioning systems. By matching system capacity to continuously changing load conditions, the APR Control-enhanced system is able to maintain better comfort conditions, as well as provide a number of unique solutions that standard air conditioning systems (usually below 100 tons) are unable to achieve.
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