In the News: Hortidaily Features DryGair’s “Closed Greenhouse” Strategy for Energy Savings & Disease Prevention
We are proud to announce that Hortidaily has just featured an in-depth analysis by our agronomist, Amir Kandlik.
The article, titled “A ‘Closed Greenhouse’ Approach to Energy Savings and Disease Prevention,” challenges the traditional methods of humidity control and proposes a thermodynamic shift that is already saving growers up to 50% on energy costs.
The Problem: Why Venting is Costing You Money
For decades, the standard response to nighttime humidity has been to open the vents or use the “pipe and vent” method. However, as the article explains, this creates a “thermodynamic conflict”. By exhausting humid air, growers also exhaust valuable heat and CO₂, replacing it with cold, unstable outside air that requires immediate, expensive reheating.
As Amir notes in the piece:
“Nighttime humidity is not a problem that needs to be vented away but an imbalance that must be managed.

The Solution: The Closed Greenhouse
The feature details the “Closed Greenhouse” paradigm. By keeping thermal screens and vents closed at night and using active internal dehumidification, growers can:
- Prevent Disease: Keep surfaces above the dew point to stop condensation.
- Save Energy: Recycle latent heat from humidity back into the crop instead of losing it to the outdoors.
- Improve Climate: Maintain a uniform climate free of microclimates.
Proven Results from the Field
The Hortidaily article highlights several success stories where this methodology was put to the test. You can read more about these specific results in our case studies:
- Vegetables: Growers reported ~50% energy savings while maintaining optimal climate conditions. 👉 [Link]
- Flowers: Trials showed a 98% reduction in Botrytis by keeping relative humidity below 85%. 👉 [Link]
- Basil & Herbs: Documented a 15% yield increase with zero mildew. 👉 [Link]
- Cannabis: Growers achieved 30–40% higher yields alongside massive energy cost reductions. 👉 [Link]
Read the Full Article
To understand the full thermodynamics behind the “Closed Greenhouse” approach and see how you can turn humidity from a waste product into an energy resource, read the full feature on Hortidaily.


