Withair® air handling units can help HVAC systems achieve higher energy efficiency and indoor air quality while reducing maintenance requirements – adding life to buildings and improving the lives of people within them. From the most straightforward needs to wide-ranging demands for air cleaning, dehumidification and energy savings, there’s a withair® air handling unit to deliver everything your project requires.
Available with features and options to meet virtually any specification, Withair® air handling units offer essential features to simply, reliably, and efficiently deliver clean, comfortable air. The unit combines energy-efficiency and flexibility with predictable performance.
Perfect Sealing Performance & Strength
The cabinet adopts a high pressure foaming polyurethane. the newly patent design of concave and convex chamfer combined the joint type forced seal PVC border with steel plate inside and outside by the high density polyurethane foam to be into a whole unit, which ensuring its perfect sealing performance and the strength, even without the sealing strip when connecting plates, meanwhile it is effectively protected from cold bridge. All the case board assembled is the outside framework of the unit, all the connection of the steel plate become the inside framework of the unit, so the double framework structure enhances the whole strength of the unit.
Withair® WZK series air handling unit air flow rate range from 2,000 ~ 50,000 m3/h, multi-static pressure choice, compact structure, humidifier, perfect cooling and heating performance; optional with air valve, water baffle and etc, It can be applied for shopping mall, hotel, office building, show fair and other comfortable areas.
Reliable Serviceability
With robust, quality construction and factory mounted, wired and tested communicating controls, Withair® air handling units are designed for easy installation and maintenance, as well as the long-lasting performance you have come to trust from Withair®.
Cost-Effective Performance
With a wide variety of configurations, component options, single-point power and design and analysis tools to help tailor air handling units to meet your energy, indoor air quality and budget requirements.
Compact Footprint
Our goal is to engineer air handling systems that contribute to improved indoor environmental quality while maintaining a compact unit footprint, tailor air handling units to specific applications – and to your specific needs.
A compact design and state-of-the-art construction technologies means you don’t have to compromise. Withair® can help lower utility bills and improve air quality, too.
Wide Range of Application Flexibility
The Withair® air handling unit offers a wide range of application flexibility while maintaining a simple, easy to install unit design. These units are a great choice when a compact, reliable air handler is needed when budget is a critical factor.
Typical applications include many different types of buildings such as: schools, office buildings, hospitals and retail. Applications can be either constant volume or variable-air-volume. Some applications include: • Two-pipe hydronic system for cooling and/or heating • Two-pipe hydronic cooling system with electric heat • Four-pipe system with dedicated heating and cooling coils • Direct expansion (DX) split systems with hydronic heat
Creating Optimal Learning Environment
Schools need quiet, comfortable environments that facilitate learning. And just as important, school districts need affordable HVAC systems. Quiet, efficient Withair® air handling units are solidly built with just the features you need - and are available with your choice of options to reduce sound output and increase energy efficiency even further.
Comfortable spaces allow children and teachers to focus on education. Withair® air handling units offer multiple strategies to deliver superior indoor air quality.
Designed to Meet Your Budget
Withair® air handling units with energyefficient features that will continue the savings into the future.
• Advanced energy recovery options include energy wheels, which recover energy from the exhaust air stream, transferring it to the air being distributed throughout a building and reducing the workload on chillers and boilers, lowering energy use and utility bills. Air-to-air plate heat exchangers are a great solution to recover sensible energy (heat only) from an exhaust air stream, with little or no crosscontamination. These exchangers may also be used for free reheat in dehumidification applications, including dedicated outdoor air systems. Where exhaust air is not available, exchangers can be used in series to heat the dehumidified air. • Superior casing construction delivers low air leakage rates and up to 30 percent lower energy consumption.
Common Functions Illustration
Factory Installed Options
Unit Options
EC Motor
Electric Heater
Mixing Box/Filter Section
Economizer/Filter Section
Energy Wheels Recover Energy
Desiccant Dehumidification Wheel
Four, Six, and Eight-row Hot/Chilled Water Coils
Microchannel Coils
Staggered Coils
Blue or Golden Epoxy Pre-Coated Coils
Ultraviolet (UV) Air Sterilization Lamp
LED Service Lights
Pleated media filters (MERV-8, MERV-13, MERV-14...)
With a comprehensive array of individual and packaged offerings, we can tailor class-leading commercial services to your precise requirements and budget.
We offer cunsulting engineering, technical support, engineering support, contractor support, maintenance support and quick technical response.
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Water Source Heat Pumps 
Air to Water Heat Pumps 
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Air-Cooled Chillers 
Water-Cooled Chillers 
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Packaged Rooftop Units 
Outdoor Air Systems 
Split & Packaged DX Systems 
Airaday® System 
Chilled Water Fan Coil Units 
Air Handling Units 
