Precision climate control for consistent cultivation

A cultivation room has two fundamentally different climate loads. Lighting and equipment generate sensible heat, while plant transpiration creates a substantial latent moisture load. Both change with light intensity, plant development, irrigation strategy and cultivation stage.

During lights-on periods, cooling and dehumidification must work together. When the lights switch off, heat input drops sharply while plants continue releasing moisture. Without appropriate climate control, temperature can fall, relative humidity can rise and VPD can shift outside the desired range.

The challenge is not simply providing enough cooling capacity. It is maintaining precise temperature and humidity control under changing loads, throughout day and night cycles and across different stages of cultivation.

At Indoor Grow Solutions, we combine OptiClimate Revomax systems with custom-designed closed-loop water cooling circuits to deliver precise and efficient climate control.

Heat extracted from the cultivation room is transferred through a closed water or glycol circuit to external cooling units. Instead of relying on fixed-speed operation, we integrate frequency inverters to continuously regulate both water pump speed and outdoor cooler fan speed according to system demand.

Using water temperature sensors and intelligent control technology, the system automatically adjusts water flow and heat rejection capacity. This allows the cooling circuit to respond more precisely to changing loads, improving temperature stability while reducing unnecessary pump and fan operation.

From hydraulic design and pipe sizing to inverter configuration, sensor integration and commissioning, we focus on every component of the system to achieve reliable, efficient and consistent performance.

Correct system sizing starts with understanding the actual operating conditions of a cultivation room. We evaluate installed lighting power, equipment heat loads, canopy area, expected transpiration rates and the required temperature and humidity setpoints.

We determine the required cooling and dehumidification capacity using the manufacturer's Revomax sizing methodology and technical parameters, taking into account plant density, irrigation volumes, runoff, photoperiod, climate setpoints and additional heat loads.

Rather than selecting equipment based solely on installed lighting power, we consider both daytime cooling requirements and critical dehumidification loads during lights-off periods.

Based on these calculations, we select suitable climate units and external cooling systems, aiming for sufficient capacity without unnecessary oversizing.