Indoor Cannabis Grow Room HVAC

Meeting Cannabis Grow Room HVAC Challenges

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 HVAC for Cannabis design, service, and operations are realizing that undersized or oversized systems from inaccurate load calculations for a given room lead to major challenges. The lack of traditional funding for cultivators is a key contributor to underperforming HVAC design choices leading to poor crop yield and ultimately – Less Profit! Rawal Devices has seen poorly designed, and underperforming cultivation facilities that were in desperate need of control improvements without replacing the equipment. The APR Control will provide the perfect solution to improve both existing and new air conditioning equipment performance and reliability. Rawal Devices has modulating technology, both mechanical and electronic, that transforms standard systems into variable capacity systems. This is critical for growing cannabis! With the APR’s ability to provide capacity modulation and precision discharge air control, your units will be able to meet ever-changing room criteria to maximize your plant yield and your customers’ profits!

Common Problems Associated with Oversized DX Air Conditioning Systems

Diagnosing or troubleshooting 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 as most commercial DX air conditioning systems are oversized for most of the year. As a result, you will likely experience: Short Cycling, higher than desired humidity levels, varying and uncomfortable space temperatures, potential coil freezing and more. If you’re experiencing any of these issues, we have a solution for you and your customers! The APR Control!
APR vs Hot Gas Reheat Comparison Table

The In-Stock Solution for Hot Gas Reheat Applications!

Rawal Devices understands there are a multitude of reasons why customers request a system with Hot Gas Reheat (HGRH); such as the need for additional dehumidification capabilities that off the shelf equipment cannot provide. Although hot gas reheat has been a common method to achieve design goals including dehumidification and temperature control, the APR Control is often a less expensive preferred design solution. There are plenty of projects that can be successful with just the APR Control’s continuous capacity modulation capabilities.
Frozen Compressor

How to Prevent Evaporator Coil Freezing and Compressor Floodback/Slugging!

During part-load or non-design day conditions or with lower airflow, you’re going to have less total heat content across the evaporator coil compared to your compressor capacity. Having enough heat content in the air entering the evaporator is critical to prevent Evaporator Freezing and Liquid Slugging or Floodback. The APR Control’s ability to provide variable capacity control through mechanical means allows your system to match capacity of your equipment to the total heat load across the evaporator coil. Rawal Devices’ APR Control can eliminate or prevent common problems associated with DX cooling – including eliminating Evaporator Coil Freezing and Liquid Slugging! As a result, APR Control reduces downtime from labor-intensive service calls and costly warranty issues, make the APR Control a very cost-effective solution for problems occurring on you existing equipment and even on new systems!

The APR Control is Better Than Hot Gas Bypass!

As the APR Control has been embraced by the industry, it has often mistaken for and compared to Hot Gas Bypass. There are key differences that separate the two solutions, especially in terms of superior dehumidification the APR Control provides. Learn more about why the APR Control is the preferred solution!
Chart explaining how to identify and fix high humidity issues

Solving High Humidity Challenges in HVAC Systems

One of the biggest contributing factors to high humidity is the lack of compressor run-time, commonly known as short cycling. This is often a result of a system being oversized, providing too much cooling capacity for a space, and satisfying the thermostat too quickly. Having some form of capacity control is the most effective way to prevent short cycling from occurring and the APR Control is the perfect solution! Rawal Devices’ APR Control offers a simple, reliable, and cost-effective solution that can eliminate or prevent high humidity because of compressor short cycling.