Vertical Farm & Indoor Growing HVAC

A sealed building where every watt of light becomes heat, and every litre the plants transpire has to be condensed back out — closer to a data centre than to a greenhouse.

  • 2,173products across this application
  • 724verified manufacturers
  • 5equipment groups

WhatA closed system with no weather

Indoor vertical farming removes sunlight and outside air from the equation. LED lighting supplies the energy, and essentially all of it ends up as heat inside the building. The plants transpire continuously, so the space gains moisture at a steady rate with no natural ventilation to remove it. The result is a cooling and dehumidification duty that runs constantly and barely varies.

WhoWho buys it

Vertical farm operators and developers, container-farm manufacturers, research and plant-breeding facilities, and the mechanical contractors delivering controlled environment agriculture projects.

WhyWhy dehumidification dominates

This is the point most newcomers miss. A greenhouse vents moisture to atmosphere; a sealed farm cannot, so every litre the crop transpires must be condensed out mechanically. Latent load frequently exceeds sensible load, which means equipment selected on cooling capacity alone will hold temperature and let humidity climb until condensation forms on surfaces and disease follows. And the condensate is clean water worth recovering back to the nutrient system.

HowDesigning for constant load

Calculate latent and sensible load separately and size for the latent duty, which usually governs. Because the load is steady, part-load efficiency matters less than in a comfort system but continuous reliability matters far more — there is no thermal buffer and no weather to help. Distribute air at every tier: airflow at the canopy is what keeps leaf boundary layers thin, and a rack with uniform temperature but stagnant air still grows badly. Finally, capture heat from the lighting: it is a large, constant, low-grade source with an obvious use in water or space heating.

Equipment this application needs

Chilling Equipment Cooling & dehumidification Chilling Equipment88 Sized on latent load, which usually exceeds sensible in a sealed growing space. Centrifugal Fans Air handling Centrifugal Fans702 EC plug fans in the air handling units, running continuously at stable duty. Axial Flow Fans Tier-level circulation Axial Flow Fans672 Airflow at the canopy — uniform temperature with stagnant air still grows a poor crop. Heat Exchangers Heat recovery Heat Exchangers362 Lighting heat is constant and substantial; recovering it changes the facility’s energy position. Dry Cooler Heat rejection Dry Cooler349 Rejecting the lighting load, with free cooling available for much of the year.

What to check before you order

EC Motor 160
Continuous running at stable duty — efficiency compounds heavily.
Variable Speed 72
Trimming to actual load across the light and dark cycle.
Stainless Steel 1,488
Food production surfaces in a permanently humid space.
Corrosion Resistant 154
High humidity plus nutrient solution aerosols.
Energy Saving 861
Energy is the dominant operating cost of indoor farming — often the whole business case.

Products for this application

Questions buyers ask

Why is dehumidification the main load in a vertical farm?
Because the building is sealed. Plants transpire continuously and there is no venting to atmosphere, so every litre of water they release has to be condensed out mechanically. Latent load frequently exceeds sensible load, and equipment sized only on cooling capacity will hold temperature while humidity climbs to the point where condensation and disease appear.
Can greenhouse equipment be used in a vertical farm?
Only partly. Circulation fans transfer well, but the cooling and dehumidification approach does not: greenhouse climate control relies on venting to atmosphere, which a sealed farm cannot do. The mechanical plant has more in common with a data centre or a cleanroom than with a greenhouse.
Is the condensate worth recovering?
Yes. It is essentially distilled water produced continuously in significant volume, and returning it to the nutrient system reduces both water consumption and disposal. On most designs the recovery pipework pays for itself quickly.

Related applications

Greenhouse & Horticulture Climate Control Fan-and-pad cooling, circulation fans, exhaust and heating for protected cropping — sized on air changes and on the crop's vapour pressure deficit,… Cleanroom & Pharmaceutical HVAC Air handling for controlled environments, where the design driver is air change rate and pressure cascade rather than cooling load — and… Data Center Cooling Equipment Dry coolers, chillers, heat exchangers and EC-driven fans for continuous sensible cooling — selected around free-cooling hours and PUE rather than nominal…

Tell us about your vertical farm & indoor growing hvac project

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