Business Details
HVAC Modulation Experts
At Rawal Devices, we specialize in transforming standard Direct Expansion (DX) air conditioning systems into variable-capacity solutions through our patented APR Control technology. With over 25 years of experience in HVAC innovation, our team has developed a proven system that extends compressor lifespan, reduces energy waste, and maintains optimal environmental conditions across diverse applications. Our approach prioritizes reliability and cost-effectiveness, enabling clients to maximize the performance of existing equipment rather than replacing entire systems. By addressing common issues like humidity control, temperature fluctuations, and compressor wear, we provide tailored solutions for industries ranging from commercial real estate to indoor agriculture. Our engineering expertise supports both retrofit projects and new installations, ensuring seamless integration with existing HVAC infrastructure.Through continuous product development, including specialized controls for modern refrigerants like R-454B and R32, we remain at the forefront of HVAC efficiency advancements. Our commitment to technical excellence is demonstrated through industry recognition from major OEM manufacturers and compliance with code requirements for capacity modulation. We collaborate directly with engineers, distributors, and facility managers to deliver practical enhancements that improve system functionality while reducing operational costs. Our customer-centric philosophy emphasizes long-term partnerships over transactional relationships, reflected in our comprehensive support from initial design consultation to post-installation optimization. This combination of technical innovation and dedicated service has made Rawal APR Control the preferred choice for HVAC professionals seeking reliable, energy-efficient solutions.
Services
HVAC Modulation Solutions
APR Control Installation
Retrofit Engineering
Energy Efficiency Optimization
Refrigerant-Specific Controls
Compressor Lifespan Extension
Highlights and features
- We offer 25+ years of specialized HVAC modulation expertise
- Our APR Control provides 80% turndown capacity on standard DX systems
- We deliver cost-effective retrofits that avoid full system replacements
- Our technology is accepted by major OEM manufacturers
- We provide application-specific solutions for 6+ industry verticals
Services
HVAC Modulation Solutions
Our APR Control technology transforms standard DX HVAC systems into variable-capacity units through precise refrigerant flow modulation. This solution reduces compressor wear by extending runtime cycles while maintaining optimal temperature and humidity levels. Commercial facilities achieve 80% turndown capacity, significantly improving energy efficiency and occupant comfort across diverse applications.
Retrofit Engineering
We specialize in integrating APR Control technology with existing HVAC infrastructure to avoid costly full-system replacements. Our engineering team provides customized retrofit solutions that maintain code compliance while enhancing system performance. This approach reduces capital expenditures and extends the useful life of current equipment through advanced capacity modulation capabilities.
Energy Efficiency Optimization
Our modulation technology optimizes HVAC system efficiency by matching cooling capacity to actual load requirements. This reduces energy waste from short cycling while improving dehumidification performance. Commercial clients achieve measurable reductions in operating costs through extended compressor runtimes and minimized temperature fluctuations across various building types.
Refrigerant-Specific Controls
We develop specialized control solutions for modern refrigerants including R-454B and R32. Our technology ensures proper system operation with these next-generation refrigerants while maintaining backward compatibility with existing HVAC equipment. This enables smooth transitions to environmentally preferred refrigerants without compromising system performance or reliability.
Compressor Protection
Our APR Control system prevents common compressor failure modes through controlled capacity modulation. By eliminating short cycling and maintaining proper refrigerant flow, we reduce mechanical stress, prevent liquid slugging, and minimize coil frosting. This extends equipment lifespan while reducing emergency service calls and associated repair costs for commercial HVAC systems.
Questions
How does the APR Control improve HVAC efficiency?
The APR Control modulates system capacity down to 20% of full load, reducing short cycling, extending compressor life, and maintaining consistent temperature/humidity levels.
Can APR Control work with existing HVAC systems?
Yes, our technology retrofits to most existing DX air conditioning units and heat pumps, transforming them into variable-capacity systems without major modifications.
Which industries benefit most from APR Control?
Commercial offices, restaurants, industrial manufacturing facilities, indoor agriculture operations, schools, and healthcare environments all achieve significant performance improvements with our system.
How does APR Control compare to variable speed systems?
Our solution provides comparable energy savings to variable speed technology at lower implementation costs, with proven reliability across 25+ years of field applications.
What refrigerants are supported by APR Control?
Current models support R-454B and R32 refrigerants, with backward compatibility for traditional refrigerant types in existing HVAC infrastructure.
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Reviews (1)
Mark Zip
Jun 01, 2022
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We have installed multiple Rawal valves for customers with oversized HVAC systems, the results are always outstanding. We recently installed an APR on a 5 ton heat pump where the customer was constantly complaining about too hot, too cold, and too humid. The combination of a Rawal, Ecobee thermostat, and blower fan speed adjustment has produced an end result where the customer can keep their space at 74 degF and 45% relative humidity, a very happy customer! Thanks for a wonderful product that works as advertised.
