Greenhouse Dehumidification (GAHU) / Climate Conditioning Systems

GAHU – VPD-Based Smart Dehumidifier for Precise Greenhouse Humidity Control
Maintaining precise humidity levels inside the greenhouse is vital for plant health and production efficiency. Developed to meet this exact need, GAHU is one of the most innovative products from Keyway’s portfolio of climate control technologies. Operating based on VPD (Vapor Pressure Deficit), GAHU doesn't just measure humidity—it controls the climate according to the real physiological needs of the plant using a specialized algorithm.

Plant-Centric Intelligent Climate Control
Unlike conventional dehumidifiers, GAHU does not regulate humidity arbitrarily. Instead, it adjusts according to VPD values defined by the plant's species, age, and growth stage. This approach:

• Balances stomatal behavior

• Enhances photosynthesis efficiency

• Minimizes disease risk

• Optimizes crop quality and growth rate

The algorithm behind GAHU is adaptable to various cultivation scenarios, making it suitable for a wide range of plant types.

Tailored for High-Precision Production Environments
GAHU provides a distinct advantage in production settings where climate sensitivity is paramount:

• Medical Cannabis Greenhouses: GAHU’s precise VPD control supports the stability of THC and CBD profiles.

• Vertical Farming Facilities: In enclosed spaces, humidity control is critical. GAHU can be seamlessly integrated into vertical farming modules.

• Grafted Seedling Greenhouses: Helps create a safe microclimate by mitigating high humidity and fungal risks.

Continuous Clean Air with HEPA Filtration
GAHU goes beyond dehumidification by delivering clean air into the greenhouse through a HEPA-filtered intake. This feature:

• Enhances air circulation

• Reduces pathogen load

• Lowers condensation risk on foliage

• Ensures a controlled fresh air supply

The high-efficiency filtration technology not only purifies incoming air but also supports hygienic conditions for healthy plant development.

Integrated Automation and Energy Efficiency
GAHU is fully compatible with Keyway’s climate control systems and can optionally integrate with global automation platforms such as Ridder, Priva, Hoogendoorn, and Sercom. Thanks to smart operating modes, it activates only when needed, optimizing energy consumption. Its low-noise operation ensures user comfort in production areas.

GAHU: A New Standard in Greenhouse Technology
GAHU is more than just a dehumidifier—it is a plant-centered climate engineering solution. Developed with Keyway’s 20 years of experience in greenhouse technology, GAHU is poised to become an essential component in high-value crop production.