AIR HANDLING UNITS


humidity targets for these types of applications, it can be necessary to use desiccant drying technology, where a special heat wheel is used to extract moisture from the supply air. This type of process typically requires an electric heater, high- temperature hot water, or steam to activate the drying process. Advanced controls: Next-generation AHUs incorporate intelligent control systems that oversee energy performance, heat recovery, airfl ow, fi ltration and component status, enabling seamless integration into building management systems (BMS). This means minimal maintenance, intelligent operation, better occupant protection and comfort. Factory- installed plug & play controls ensure eff ortless on-site installation. Advanced fi ltration: Activated carbon fi lters and specifi c molecular solutions are available to control gaseous pollutants such as VOCs and compounds emitted by vehicles. Diff erent types and set-ups ensure eff ective reduction of odours and contaminants, in line with the most stringent ODA requirements. The latest options can ensure air quality up to ePM1 95%. Heat recovery as standard: AHUs commonly include


heat recovery and cooling, which can make a signifi cant contribution to reduced energy bills, enhancing occupant comfort, cutting costs and in some instances, negating the need for an additional wet heating system. Heat recovery technology varies, including cross, counter-fl ow, rotary, and twin coil recovery units. Look for options tailored for effi ciency and space-saving. Zero contamination is crucial for critical environments.


At the time of writing, we have just experienced the hottest summer on record. Cooling is becoming an increasingly important function in year-round climate control, and is also an essential feature of critical infrastructure, such as data centres.


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Heat pump & AHU in one: Packaged heat pump AHUs


provide a cost-eff ective climate control solution, delivering compact high performance, and stable, clean supply-air temperatures all year round. The latest solutions feature zero defrost cycles, integrating refrigeration and heat recovery in one unit, leading to reduced installation and maintenance costs, ideal for commercial applications, particularly where space is at a premium, such as in offi ces, retail spaces, schools, and healthcare facilities.


Choosing the right AHU for an application Every application has nuanced requirements: ■ Offi ces and retail: High occupancy, focus on comfort and productivity. Packaged or modular AHUs with high-effi ciency coils, fi ltration, and heat recovery deliver clean, comfortable air while cutting operating costs.


■ Healthcare and laboratories: Strict hygiene and pressure control. HTM-compliant or hospital-grade AHUs with HEPA fi lters, UV options, and wash-down features are essential.


■ Hotels and hospitality: Quiet operation, compact design, and ease of maintenance are paramount. Packaged units with modular components and advanced controls meet these needs.


■ Swimming pools and leisure: High humidity and chemical emissions. Special pool AHUs (modular, corrosion resistant, desiccant or heavy-duty coils) control moisture and odours.


■ Industrial, pharmaceutical, food processing: Cleanrooms or factories demand particulate fi ltration, humidity control, and sterilisation. Custom AHUs fashioned to spec, often with acid-resistant materials, maintain hygiene and protect goods.


■ Data centres/IT: Require precise temperature control and redundancy. Heat-pump AHUs with economisers and built-in thermal management are ideal.


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"Galvanised steel panels sandwiched with insulation are a great option, and with the right frame and gasket options, can deliver very high levels of air tightness, reducing energy


penalties from leakage."


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