Evaporative cooling systems for spaces AC cannot reach.
Evaporative cooling uses the heat absorbed when water turns to vapour. Delivered as a high-pressure mist, it cools open and semi-open spaces – sheds, yards, terraces and venues – at a fraction of the running cost of air conditioning.
Direct evaporative cooling with mist
Every litre of water that evaporates absorbs a large amount of heat from the air. Air coolers do this with a wet pad inside a box; a mist system does it directly in the space by atomising water into droplets that evaporate before they land.
Because there is no duct, box or closed room needed, mist-based evaporative cooling works in places refrigerated AC cannot practically cool – open sheds, outdoor seating, platforms, construction sites and animal houses. It can also cool roofs to reduce heat entering a building.
| Mist evaporative cooling | Air cooler | Air conditioning | |
|---|---|---|---|
| Open / semi-open areas | Yes | Limited | Not practical |
| Running cost | Low (pump) | Low | High |
| Best climate | Hot & dry; moderate with fans | Hot & dry | Any |
| Adds humidity | Yes, controlled | Yes | No – dries air |
Evaporative cooling options
Mist cooling systems
Flash-evaporating mist for open areas, sheds, patios and work zones.
Misting fan systems
Fan-mounted mist rings that push cooled air across large spaces.
Indoor & outdoor cooling
Mist lines and fans for restaurants, terraces, venues and platforms.
Industrial mist cooling
Heat relief for shop floors, furnaces, warehouses and loading bays.
Adiabatic pre-cooling
Pre-cool intake air on chillers, condensers and VRF outdoor units.
Roof cooling
Cool the roof surface.
Is evaporative cooling right for you?
- How hot and how humid your hottest months are
- Whether the space can ventilate humid air out
- What must stay dry (stock, machinery, electronics)
- Water availability and quality
Good to know
- Evaporative cooling cannot match AC set-points in humid weather
- It adds humidity – unsuitable where dry air is required
- Ventilation is essential in enclosed spaces
How a TrueMist project runs
A structured conversation before any equipment is proposed.
- 01
Describe the problem
Tell us what is happening, where and when.
- 02
Assess the conditions
Area, airflow, humidity, water and power on site.
- 03
Define the system
Pump, nozzles, lines, filtration and controls sized to the duty.
- 04
Install & validate
Commissioning checks against the agreed objective.
Related solutions and guides
Questions we are often asked
What is an evaporative cooling system?
A system that cools air by evaporating water into it. Mist systems, air coolers and cooling pads are all evaporative; mist systems work directly in open spaces.
Does evaporative cooling work in India?
Very well in hot, dry regions and seasons, and usefully in moderate humidity with fans. In coastal monsoon humidity the effect is limited.
How is it different from an air conditioner?
AC removes heat and moisture using a refrigerant cycle in a closed room. Evaporative cooling adds moisture and works in open spaces with far lower power use.
Can it cool a factory?
Yes – mist lines and misting fans are widely used to cool factory floors, especially in semi-open sheds with good ventilation.
Your application deserves the right system.
Share your operating conditions. Start with a conversation, not a pre-selected package.