cannabis grow room design

Commercial Grow Room Design Plans | How To’s

The cornerstone to creating any commercial grow facility, such as those needed in cannabis cultivation, requires a well-thought-out layout and optimum mechanical systems. As an example, with an indoor cultivation facility design the mistake of under-sizing the environmental controls are an all too common occurrence. The cultivation facility design must feature an HVAC system with redundancy and a backup power source. In addition, they should be cleanable outside of the grow rooms and be easy to repair. The units remove massive amounts of moisture caused by the abundant cannabis plant growth, so it is imperative that they have properly sized units to meet the needs of the grow room’s space.

Within the confines of the indoor grow facility, air circulation keeps the plant’s canopy slightly swaying because of the artificial breeze. The upper flowers in a vertical grow are then prevented from getting excessively hot. Clearly, the environmental controls are of paramount importance or cannabis crop loss can occur and pests from clones can easily enter the facility if things are not kept at consistent levels. Engineering and installation are one of the biggest investments (if not the biggest) of any commercial grow room design plan. You cannot cut corners, or the financial losses quickly become insurmountable.

What’s Required for a Grow Facility Design?

A craft grower is a facility that is licensed by the Department of Agriculture to cultivate, dry, cure, and package hemp or marijuana. They each have their own commercial marijuana grow room design plans but for licensing as a craft grow, they must contain at least 5,000 square feet of canopy space for the cannabis plants during the flowering stage of their life cycle. The Department of Agriculture can authorize either an increase or decrease of space for the flowering cultivation stage which occurs in increments of 3,000 square feet depending on the market need, the craft grow house design capacity, and the history of the licensee’s compliance or noncompliant issues. The maximum set forth is 14,000 square feet for cultivation when the plants enter their flowering stage. However, the commercial grow room design plan laid forth by the USDA encompasses all the growth stages of the cannabis plant which drives home the importance of them being secured and enclosed in an indoor cultivation facility design.

The Typical Craft Grow Facility — Room Division

Standard commercial grow room design plans does vary depending on your crop and your cultivation practices. Will you be using hydroponics or standard soil medium? Typically, indoor cannabis cultivation has at least eight spaces or more flower rooms with a standard measurement of 30 feet across and between 50 to 100 feet long. Dividing the indoor grow facilities into individual rooms allows each one to become self-contained with their own temperature controls. Needed pest treatment practices become easier. Also, the workflow is reduced to doable and digestible chunks. The cultivation facility design that consists of various rooms affords various planting and harvest times. The rooms are also easily quarantined from the rest of the facility to control any pest or mold outbreak so only a small percentage of the crop is damaged or destroyed and the entire grow operation does not perish. A standard marijuana grow facility design with room division allows you to test the efficiency of Co2 injection, factor in various types of lighting, and monitor the nutrient regime that occurs. Another room can also house the same cultivars but have them grown under different variables, so you obtain reliable data and make any needed protocol changes.

Engineering the Warehouse Grow Room Design

Any engineer used to create a craft grow facility should have experience with indoor plant cultivation facilities. The design of the commercial grow room will feature the necessary environmental controls, plumbing, and electrical requirements, backup power system, and typically HVAC redundancy. To achieve all of this, most will hire various engineering firms that specialize in the key areas to make the commercial grow room a success.

HVAC of the Cannabis Grow Facility Design

The crucial component of any commercial grow op setup remains the HVAC systems used. The HVAC company will gather the needed information from the cultivation consultant and engineer so they can focus on the necessary electrical use, Co2 requirements, air circulation, purification, and moisture quantity that is forecast to be generated at the site. They will then work to create the ideal environmental settings needed for all the various stages of the marijuana or hemp growth cycles to effectively control the conditions of the indoor grow facility.

At Mintropy, our engineers will consider the following for your craft grow facility design:

  • Emergency Co2 evacuation
  • Carbon filtration utilization factoring in the exhaust path needed to account for the necessary odor control needed at the grow facility
  • Utilize a hydrogen peroxide filtration system in the return air pathways to further reduce airborne pathogens
  • Include latent load in cooling load calculation to maintain the craft grow facility’s crucial environmental balance
  • Factor in the wastewater being released into the sanitary system and its dilution
  • Positively pressurize each grow room while keeping the entire space under negative pressure
  • Maintain dialogue every step of the way with engineers and others in jurisdiction authority

The Commercial Cannabis Craft Grow Industry

The commercial cannabis industry is constantly changing and evolving. Without a doubt, the one crucial component of any commercial grow op setup remains the HVAC system. Standard commercial HVAC companies often lack the experience needed to provide the correct environmental conditions required by a craft grow facility.

In the past, 1,000 tons of refrigeration capacity was needed for 80,000 to 10,000 square foot facilities such as a data center, hospital, or school. A grow room requires similar, but they are dramatically different. A grow room has a much higher latent load (moisture/dehumidification load). The humidity in the grow space must undergo more cooling to effectively condense the humidity off the cooling coil. A much colder chilled water temperature is needed. When growing cannabis, the lights-out mode means that growers must dry the air and then reheat it, so the grow room does not start to over-cool. The reheat can use free energy obtained from the dehumidification process when the right HVAC system is used. Having an experienced company, such as Mintropy, handle such key specifics is necessary for the success of any commercial cannabis grow facility.

Importance of Picking an Experienced Craft Grow HVAC Company

As you can see, it is important to pick an experienced HVAC engineering company such as Mintropy who has the needed craft grow facility experience to achieve optimum success when creating a design layout and installing the needed mechanical systems. You’ll want someone who can explain your HVAC options, costs, limitations, and advantages of the various systems for your specific commercial craft grow room requirements. Also, you’ll want to look at modular, scalable, and redundancy HVAC control approaches for your craft facility so you know and understand your options.

If you have any questions, please contact us today.

Creating a commercial grow facility, such as those needed in cannabis cultivation, requires engineering experience & optimum systems.

Grow Room Design for Marijuana Growing

Grow Room Design for Marijuana Growing

Grow room design for marijuana growing is easy for beginners or advanced gardeners alike. Whether you’re building out a grow room at home or for commercial use, there are a few things you should consider for finding a space for germinating, growing, and harvesting flower.

Designing a marijuana grow room comes with many different options in terms of location, space needed, watering, lighting, ventilation, and more equipment needs. Knowing the components you need can help you understand what goes into an efficient grow room setup.

Location, Location, Location

Grow room design begins with choosing a prime space for cultivation. Greenhouse grows are the most energy-efficient location you can find since they use the sun’s free light and energy over indoor facilities that require lights to compensate.

Regardless of the cultivation method, begin by establishing the number of plants you plan to grow in the space and the type of strain. Different strains may grow short and wide or tall and slender.

Knowing how much space each plant needs to grow can help you decide how you want to set up your grow room. The size of the plant will also dictate the amount of space you need to leave between your lights and plants.

Discretion is crucial when building out any grow room. Unsecured grow spaces are vulnerable to theft. You don’t want to spend all those months tending after a plant, just for it to be stolen under the cover of darkness.

When considering your cannabis grow room space, choose one that can fit all your components needed. Make sure you consider your lighting, ventilation, filtration, and irrigation equipment needed to create a sustainable grow space that’s won’t break the bank.

Ensure your room can remain in absolute darkness without any light leaking. Furthermore, ensure your grow space is close to a water and power source. Grow tents are a popular grow space for indoor home growers growing in soil and hydroponic environments.

From Soil to Oil

Part of growing cannabis involves creating a healthy living environment for your seed and plant. Using living soil and organic nutrients to aid in absorption can help your plants grow flavorful and potent flower buds.

Indoor growers may also use hydroponic mediums that may include a blend with bases of peat, sphagnum, or coco. No matter what soil you use, ensure you use organic and sustainable soils to not only help out the planet but give you better yields.

Best Irrigation Practices

How you water your plant depends on your growing preference. For commercial growers, hydroponic growing is a sustainable and effective cultivation method for multiple reasons:

  • Fewer pesticides and herbicides needed
  • Faster growing, less water needed
  • Lower supply chain costs

Indoor cannabis plants can also be watered by hand, via drip irrigation, and flood tables. Drip irrigation and flood table watering are convenient, automated, and sustainable for commercial cultivation.

HVAC Considerations

Huge energy costs can be attributed to ventilation, dehumidification, and cooling any grow space. For small grows, a small, ductless air conditioner is compact, energy-efficient, and able to heat and cool a room compared to natural ventilation alone.

For larger grow, chilled water systems for temperature and humidity control can save more money over conventional HVAC equipment. Carbon and ozone filters can be added to the exhaust system to reduce the pungent odor.


Indoor growing is heavily dependent on lighting since plants are hidden away from natural sunlight. Marijuana plants may need different types of lights during different stages of their life cycle such as fluorescent, light-emitting diode (LED), and high-intensity discharge (HID) lights.

LED lighting is a popular and eco-friendly choice for an indoor grow room setup, small or large. Saving on lighting bills can make a huge difference when plants need hours upon hours of continuous lighting. LED lights are long-lasting and remain cool even after long periods of use. Just make sure there’s enough space between your plant and lights to prevent burning.

Waste Management

Growing cannabis can produce a wealth of shiny, resinous buds, but what they don’t talk about is the amount of organic waste produced, too. If you want to build a sustainable grow space, look into conventional composting or Bokashi fermentation, which involves mixing waste with Bokashi, a compost activator, to create a fermented and nutrient-dense fertilizer.

How to Build Your Own Grow Room

Building your own marijuana grow room to your exact specifications and within your budget can be a satisfying and productive experience. The sheer variety of options available in grow room design can give you free rein over how basic or advanced you need your space.

CTU is a valuable resource for obtaining online cannabis training and certification for growing marijuana at home or for commercial purposes. Signing up for online marijuana school can help you create an optimized cannabis grow room that also saves you money!

There are many things to consider when designing a marijuana grow room. Such as location, lighting, waste management and HVAC considerations.