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… Read More
Who we are Suggested text: Our website address is: https://www.rawal.com. Comments Suggested text: When visitors leave comments on the site we collect the data shown in the comments form, and also the visitor’s IP address and browser user agent string to help spam detection. An anonymized string created from your… Read More
Adjusting the APR Control Are there any adjustments that need to be made after installing the APR Control? The Rawal Devices APR Control has been known around the HVAC industry as a “set it and forget it” solution. For most standard DX comfort cooling applications, the APR typically does not… Read More
In any controlled environment avoid equipment off-cycles so you don’t “lose the room!” Maintaining tight temperature and humidity levels in controlled environments such as cleanrooms is critical to prevent material damage, production loss, and shutdowns. Installing the Rawal Devices’ APR Control can be the perfect, cost-effective solution to avoid any interruptions in production as a result of the failure to maintain quality. Read More
Installing the APR Control is straight-forward and doesn’t take a lot of guesswork from the technician. It is common for HVAC technicians who are unfamiliar with the APR Control to be intimidated by the installation process. Read More
Mechanical HVAC systems can be the greatest limiting factor or the greatest opportunity to maximize productivity and profits in the indoor Cannabis Cultivation Industry. Those involved in cannabis HVAC system design, service, and operations are realizing that undersized or oversized systems from inaccurate load calculations for a given room lead to major challenges. Read More
Diagnosing what’s wrong with your customer’s air conditioning unit can be a daunting task which can take up a lot of your time and potentially deplete your warranty reserve. One of the most overlooked issues is having too much cooling capacity. If you’re experiencing some of the issues below, we have a solution for you and your customers! Read More
Have you recently had issues with extensive lead times on hot gas reheat (HGRH) units to the point where it will delay your project? If your answer is yes, we can assure you that you’re not alone! We have a solution for you; the readily available APR Control is considered an excellent solution to Hot Gas Reheat that won’t extend the project timeline. Read More
APR Control Compressor Power Consumption Testing Parameters An HVAC equipment manufacturer conducted a test in their state-of-the-art testing facility to assess the direct energy-saving benefits of utilizing the APR Control at part load conditions. Original equipment performance parameters: 10-ton rated at AHRI 210/240 Two 5-ton stages… Read More
The APR Control Enhances Heat Pumps In the case of heat pumps, you have to prioritize capacity for either cooling or heating. If you are prioritizing and sizing for the heating load, the result will often be excess cooling capacity. The APR Control will… Read More
Rawal Devices proudly offers Free, Live, online webinars to educate you, your service & sales team, as well as your customers on the APR Control. Below are a variety of trainings we offer regularly. We can also provide completely customizable trainings, just feel free to contact… Read More
