Humidifiers and Dehumidifiers for AHUs

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Benefits

Working with Condair on your next humidity control project has many benefits.

Expert advice you can trust

Get expert engineering advice direct from the manufacturer

World leading technology

Continuous product innovation keeps Condair at the forefront of the industry

Comprehensive range

Being able to offer all technologies allows Condair to always offer the best solution

Humidifiers and dehumidifiers for air handling units

Top of page Testimonials FAQs

System selection and design

Condair provides expert advice and guidance to air handling unit manufacturers and consultants specifying humidifiers, dehumidifiers or evaporative cooling systems for AHUs.

Many factors need to be considered to correctly design a humidity control system and have it deliver the required environmental control. Some are obvious, such as the available energy source and required accuracy, but factors such as water quality or the cost of maintenance should also be considered.

Condair offers free technical support on:
- Psychometric and load calculations
- Absorption distance calculations
- Run cost analysis and comparisons between systems
- System selection including all associated components

World leading technology and innovation

For more than 75 years Condair has been innovating in the field of humidity control. The electrode boiler steam humidifier was invented by Condair in the 1960's and has been the most widely used commercial humidifier technology ever developed.

Today, Condair manufacturer the most comprehensive range of commercial humidity control systems in the world. Through continued investment in R&D, Condair's products remain the most efficient, hygienic, user- and maintenance-friendly systems available.

Evaporative cooling partner for AHU manufacturers

Alongside expert advice and an extensive range of humidity control systems, Condair empowers air handling unit manufacturers and OEMs to innovate and deliver customised solutions for end-user success.

Evaporative cooling offers significant opportunity to the HVAC sector to reduce cooling energy use and deliver a more sustainable built environment. Condair’s experience in manufacturing evaporative media and in-duct evaporative systems ideally positions it as the supplier of choice for manufacturers wanting to develop their own evaporative cooling products.

Condair’s flexible approach to project management and its global footprint enables it to support its AHU and OEM clients no matter where they or their projects are located.

Quotes from our customers

Konvekta

Amir Ibrahimagic

Group Business Development Manager

Konvekta has standardised its exhaust air cooling systems on the Condair ME humidifier as its evaporative cooling solution. The reliability of the unit is second-to-none. It incorporates the highest quality components that give utmost longevity and performance to our clients. Alongside the product’s USPs, Condair is also a very solutions-oriented partner.

Edpac

Noel Lynch

Managing Director

By reducing the temperature of the outside air entering the penthouse ventilation area with the Condair MEs, the air being drawn into the external airstream of the air handling units is significantly cooler than the outside air. This enables the indirect cooling system to maintain the desired data hall temperature of 24°C, even in the hottest months of the year.

Weatherite

Andy Lewis

General Manager for Data Centres

A key benefit of working with Condair is their reliability and in not viewing them as merely a supplier, but as a partner, capable of supporting our product from the design stages through to on-site commissioning. I would definitely recommend Condair because of the quality of product, the service that they offer, and also because of the innovation that they offer for this sector.

Frequently asked questions

How are humidifiers sized for an air handling unit?

To size a humidifier for an AHU project, a psychrometric chart is used to determine the amount of water required to increase the humidity from the initial level to the target level for one kilogram of dry air. This value is then multiplied by the total air volume. The starting condition is typically based on the coldest and driest expected situation, often corresponding to the outdoor conditions on the coldest winter day.

Is there a rule of thumb for calculating humidity load?

What factors determine humidifier selection?

What is the absorption distance for steam in an air handling unit?

Absorption distance will depend on the humidity level, air temperature and velocity. Typically, at 2.5m/s, 20°C and 50%RH the absorption distance will be around 1m. This can be shortened by up to 70% with the use of advanced short evaporation steam lance manifolds.

To avoid condensation, nothing should be located in this absorption area with no duct bends or transitions. If submicron filters are used after the humidifier, the absorption distance should be x2.5, to avoid moisture being removed by the filter. If sensors or high-end humidistats are placed in the duct, the absorption distance should be x5 to ensure proper mixing prior to the stat.

Is there a low energy humidifier?

To change the state of liquid water into a gas requires the same amount of energy if the water is being boiled to create steam or evaporated from a surface or aerosol. When it's evaporated, the energy comes from the air itself rather than from a heater. The result is an evaporative cooling effect that occurs during the process, as the air's thermal energy is used for the water's vaporisation, which chills the air.

So different types of humidifiers will use approximately the same amount of energy to achieve the same output. To achieve "low energy" humidification, it is advisable to review system efficiencies, such as correct installation or operating practises, along with any possible sources of waste heat that might be used for the vapourisation process.

How far away from the AHU should a steam humidifier be located?

Get free expert advice

If you want to explore your options for humidity control, Condair's expert sales engineers will visit your site, review your project and talk you through their recommendations.

Alternatively, if you would prefer a call or online meeting, our team are always happy to discuss possible solutions and offer free technical advice.

Talk to your local expert