What Is a Commercial or Industrial Humidity Control System?
It is a humidifier plus the sensors and controls that keep humidity at a target, rather than simply adding moisture. Commercial and industrial humidification systems have far higher capacity than home units and are built to hold precise levels.
A Smart Fog system has four parts: dry fog humidifiers, S Series humidity sensors, a CPLC controller, and a PB control center that manages the valves.
Targets depend on what you are protecting: for example 45 to 55% RH for printing, 40 to 60% for electronics and offices, and 85 to 95% for most stored produce.
The system then holds that target as outdoor air, occupancy and processes change through the day and the year.
Benefits of Humidity Control Solutions
Steady, automatic humidity pays off in product, people and running costs:
Settle airborne dust:
Fine fog helps dust settle out of the air instead of circulating.
Healthier indoor air:
Humidity of around 40 to 60% eases dry eyes, skin and throats, and research links moderate humidity to lower survival of some airborne viruses.
Control material quality:
Stable humidity protects paper, wood, textiles, electronics and produce from curl, cracking, warping and shrink.
Lower energy than steam:
Nothing is boiled, and evaporation takes heat out of the air.
Fewer static hazards:
Moisture helps static charges dissipate, reducing shocks and damage to electronics.
Steady humidity all year:
Sensors and controls adjust output automatically as seasons and conditions change.
Our Humidity Control Systems
Humidity that holds its setpoint and never wets
Set your target once and the system holds it, adding dry fog that evaporates before it lands. There are no wet surfaces, no boilers and, with purified water, no mineral residue.
How Smart Fog Holds Humidity
1
Droplet Generation
1
Droplet Generation
Smart Fog atomizes water with compressed air into droplets of about 4.2 microns, small enough to evaporate before they land. Bullets: Holds setpoint within 1 to 2% / Installed and commissioned with Smart Fog’s team / No water on surfaces / Scales from one room to a whole facility. Closing line: Each system is designed for your space, with Smart Fog’s team handling sizing and commissioning.
The fine droplets spread quickly and evenly, so humidity is consistent across the space rather than high near the unit and low at the far wall. Bullets: Fast, uniform distribution / Works in large and high-ceiling spaces / No dry zones / No wet spots
2
Even Coverage
2
Even Coverage
3
Energy
3
Energy
Nothing is boiled, so each unit uses about 0.4 kW at its full output of 25 lb of water an hour, against roughly 8 kW for electric steam. Evaporation also cools the air slightly. Bullets: About 0.4 kW per unit at full output / No boilers or steam lines / A cooling effect in warm spaces / Lower running costs over the system’s life
Because the fog evaporates in the air, humidity rises while floors, products and equipment stay dry. Bullets: Stable humidity / Dry surfaces / No condensation from the humidifier / No mineral residue with purified water
4
Dry Surfaces
4
Dry Surfaces
5
Long Service Life
5
Long Service Life
Systems are modular, so you can add units as needs grow, and the nozzles have no moving parts. Bullets: Automated control / Add units as you grow / Service about every two years / One-year warranty, optional 10-year warranty. Closing line: Modular systems grow with your operation without replacing what is already installed.
Humidity Control Systems Spotlight
All Smart Fog systems use non-wetting dry fog. The most popular:
ES100
Direct
Space
ES100
Our signature wall-mounted direct space humidifier.
Humidifies a room with no ductwork, adding up to 25 lb of water an hour per unit.
TS100
Brings dry fog into new or existing air handlers and ducts.
No droplet screens, drain pans or evaporation chambers, and even humidity throughout the building.
TS100
In-Duct
Humidifier
ES100M
Mobile
Humidifier
ES100M
The ES100 on wheels.
Portable humidity for temporary, seasonal or moving needs. Link text:
Humidity Control by Industry

Schools
Winter classrooms often fall well below 30% RH. In-duct systems bring a whole building up to a comfortable 40 to 60%.

Greenhouses and Indoor Farms
Growers manage humidity with vapor pressure deficit (VPD) to keep plants transpiring steadily and limit disease.

Wineries and Production Facilities
Barrel rooms held around 70% RH at 55°F lose less wine to evaporation; tea and coffee processors hold humidity for consistent product.

Labs and Pharmaceuticals
Stable humidity protects samples, instruments and processes; the range is set by your methods and validation.

Libraries, Galleries and Museums
Collections need steady humidity, typically 45 to 55% RH, to prevent cracking and warping.

Hospitals
ASHRAE/ASHE Standard 170 sets 20 to 60% RH for operating rooms; dry fog meets it without steam or wet surfaces.

Cold Storage and Ripening Rooms
Most produce keeps best at 85 to 95% RH, leafy greens at 95% or more.

Office Building Environments
Comfortable humidity reduces dry skin, sore throats and static shocks in heated buildings.
Why Partner With Smart Fog?
Smart Fog has more than 40 years of experience in humidification across manufacturing, healthcare, food production and more, and every system is made in the USA.
All systems come with a one-year warranty or an optional 10-year warranty, and Smart Fog’s engineers support you from sizing through commissioning and troubleshooting.
FAQs
What is a humidity control system?
A humidifier combined with sensors and a controller that hold a space at a set humidity automatically. Smart Fog’s systems use dry fog humidifiers, S Series sensors and a CPLC controller to hold setpoint within 1 to 2%.
What humidity should my facility maintain?
It depends on what you are protecting. Typical targets are 45 to 55% RH for printing, 40 to 60% for electronics, data centers and offices, 50 to 65% for textiles, and 85 to 95% for most stored produce.
How is a humidity control system different from a humidifier?
A humidifier only adds moisture. A control system measures humidity and adjusts output continuously, so the space stays at its target instead of drifting with the weather or overshooting.
How much energy does it use?
A Smart Fog unit uses about 0.4 kW at its full output of 25 lb of water an hour, based on average compressed air use. An electric steam humidifier needs roughly 8 kW for the same output.
How often does it need maintenance?
Day to day, mainly water filter changes and inspection. The nozzles have no moving parts, and Smart Fog recommends a service about every two years.