WELCOME TO RAWAL DEVICES

Founded 1993 by Davis Rawal, Rawal Devices manufactures highly efficient and cost-effective solutions that solve temperature and humidity control problems in commercial, industrial and institutional building applications.

Our combination of technology, expertise and customer service ensures proper temperature and humidity control for greater comfort, indoor air quality and energy efficient performance, while providing an excellent return on your investment!.

Davis Rawal said “Let there be modulation” and it was good!

Davis Rawal, inventor of the Rawal Device, was one of those creative engineers who could uncover cost-effective solutions to unusual problems.

The APR Control enhancement has been a proven solution since 1993 when founder Davis Rawal patented his innovative APR Control. The APR Control enhancement has been a proven solution since 1993 when founder Davis Rawal patented his innovative APR Control. 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).

Part-load control that’s better than hot gas bypass

This creativity brought about the development of the APR Control, also known as the Rawal valve. Davis was consulting on a project where an engineer specified standard hot-gas bypass to the evaporator coil. The design required multiple large-capacity split systems with evaporators located a considerable distance from the condensers. Realizing that the hot gas would condense prior to arriving at the evaporator coil, Davis sought another solution. After the successful application of this unique solution, he recognized that it could be applied to a variety of needs for part load control. He simplified and engineered the device down to its compact size and patented it as the APR® Control.

Davis recognized that the unique design of the APR Control provided advantages such as lower installed cost – especially on split-system applications – and much smoother response to system and load changes. He envisioned additional opportunities and applications for the device.

New generation leads Rawal Devices for next-gen HVAC control

Since 1993, the APR Control has been applied to temperature- and humidity-sensitive spaces that would normally require considerably more costly solutions. Guided for the last 20 years by Davis’ son Richard, Rawal Devices has sold tens of thousands of APR Controls, providing system solutions to thousands of engineers, facility managers, and service contractors across the country and around the world.

Rawal History

The APR Control enhancement has been a proven solution since 1993 when founder Davis Rawal patented his innovative APR Control.
Leadership

The APR Control enhancement has been a proven solution for nearly 30 years since founder Davis Rawal patented his innovative APR Control. Today the firm is managed by his son Richard, dedicated to growing Rawal Devices into a leadership position for HVAC control technology.
Responsiveness

Rawal Devices’ technical staff is experienced, capable and responsive to the needs of HVAC professionals. Please contact us and we will be glad to assist you! Rawal Devices is particularly proud of our customer service availability and knowledge – call us!
Distribution

APR Valves are available through select HVAC distributors, Counter sales, designated OEMs, and directly through Rawal Devices. Call us today for advice on your application and how to purchase.
Technical Proficiency

Rawal Devices is the manufacturer of highly efficient and cost-effective solutions (including the APR Control (analog) and APR-E (digital) Valves) that solve temperature and humidity control problems in commercial, industrial and institutional building applications. Our combination of technology, expertise and customer service ensures proper temperature and humidity control for greater comfort, indoor air quality and energy efficient performance, while providing an excellent return on your investment!

About the team

We’re a dynamic group of individuals who are passionate about what we do and dedicated to delivering the best results for our clients.

Richard Rawal

President / CEO

From the age of 14, Richard learned the HVAC business in the family contracting firm. He attended engineering school and invested years in design-build contracting and service support along with his father, Davis.

They started Rawal Devices in 1993 following successful patent of the APR Control. For over twenty years Richard has built the APR Control distribution process and created relationships with major OEMs, contractors and engineers across the country.

Rawal Devices customers have always been his focus, and the APR Control has proven its effectiveness in delivering leading-edge control performance for building technologies.
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Jason Santos

Senior Technical Engineer

Jason started in the HVAC industry at the age of 13, going on service calls with his father. After graduating from technical college he worked in the field for more than 30 years as a Service Technician, Service Manager and in start-up commissioning. Jason’s experience ranges from a limited tenure in the residential field to vast experience in the bio-medical field with an expertise in all aspect of DX equipment including chillers, VAV, VVT, Make-Up Air, and more. Towards his lasts days in the field, he was performing HVAC Forensic Analysis for large commercial /industrial spaces. He was instrumental in resolving issues from design issues to systemic automated control issues, as well as fundamental mechanical flaws. Jason joined Rawal Devices in 2017 as Senior Technical Engineer.

Since joining the team, Jason has provided a wide range of training to both employees and service customers, took the lead on various research and development projects, and has been fundamental component of the APR-E project in both development and application. Jason has been published in the RSES Journal – check it out here!
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David Larocque

Sales Engineer

After receiving his degree in Mechanical Engineering, David spent a few years working at Cambridgeport Air Systems, designing rooftop curbs and economizers. Looking to transition into more of a sales role, David joined Rawal Devices in 2018 as a Sales Engineer.

As a quick learner and with a personable manner, David serves to educate customers and grow our industry reach, building upon his existing strong relationships.
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Robert "Rob" Nocella

Sales Engineer

Rob Nocella brings a wealth of hands-on HVAC expertise to the Rawal Devices team. Starting at the age of 13, where he was first exposed to installing HVAC systems working for his uncle in the construction industry. He graduated from trade school, RETS Tech (HVACR Program), and began his career as an apprentice at Bedford Mechanical. Rob honed his skills through years of field experience, culminating in his role as Mechanical Maintenance Supervisor at Copper Mountain Resort in Colorado. With over 15 years of expertise in commercial and industrial HVAC systems, Rob transitioned from a seasoned Senior Technician to join Rawal Devices in 2023. His deep understanding of industry challenges and commitment to innovative solutions make him an invaluable asset in driving customer success.
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Sean Morrison

Production Manager

Sean Morrison has been a key member of the Rawal Devices team since 2012, progressing from shop assistant to his current role as Production Manager. With years of hands-on experience producing APR Controls, Sean is deeply committed to delivering top-quality products. He oversees daily warehouse operations, collaborates with office personnel, provides logistical support and customer assistance when needed. Sean’s expertise extends to product development, working closely with engineers and the sales team to meet evolving customer needs. His passion for finding solutions and his unwavering dedication to teamwork make him a driving force behind Rawal’s continued success. Sean is eager to grow his contributions at Rawal Devices and embrace new challenges in the years to come.
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