Air handling unit types

The air handling units are constructed with a galvanised steel or aluminium profile structure and cast aluminium or plastic corner pieces. The double-skinned panels, also known as sandwich panels, are equipped with acoustic and thermal insulation made of non-flammable mineral wool Air Handling Unit Basics: Components, Specifications & Types AHU Internal Components. Generally, AHUs must have the 3 basic components which are the fan, cooling coil and filter. AHU Specifications. Most AHUs casing is required to be constructed in accordance with EN 1886 standards. However,... VRF.

Rectangular AHU2 — A multi chamber rectangular Air Handling units in a row with a Fluid IN and Fluid OUT connections at opposite ends. RectangularAHUs3 AHU3. Rectangular AHU with 3 Ends — Rectangular Air Handling terminal units with 3 ends to connect to additional branch or unit. RectangularAHUs4 AHU4 classifications-of-air-handling-units Types of Air Handling Units In a horizontal unit the supply fan coils and filters are all installed at the same level as shown in figure horizontal units need more floor space for installation and they are mainly used as large AHU. Most horizontal units are installed inside the fan room There are basically two types of air handling unit that are in used and they are the Draw-Through or Blow-Through. In the Draw-Through type, the fan pulls the air through the mixing box, filters and cooling coil before discharging it from the fan outlet to the space to be conditioned or to the ducting network. The design can be vertical or horizontal Air Handling Units. How do Air Handling units work, what are the different types of AHU. Cooling coils, fans, filters, dampers, ductwork, working animation In this video, we are going to talk about Air handling units, in short AHU. what are the typ... hi guys, welcome back with to another interesting topic in HVAC

10 | Air handling units Components of air handling units Fan/motor. A variety of fans can be offered based on the requirement. - Belt driven DIDW centrifugal FC/BC fans - Centrifugal plug fan - Motors with IE1/IE2/IE3 efficiency - PM motor with IE4 efficiency Heat transfer coils. Copper tube aluminium finned heat transfer coils available i Tuesday 27 April 2021. An air handling unit, commonly called an AHU, is the composition of elements mounted in large, accessible box-shaped units called modules, which house the appropriate ventilation requirements for purifying, air-conditioning or renewing the indoor air in a building or premises. They are usually installed on the roof of. Small air handlers, for local use, are called terminal units, and may only include an air filter, coil, and blower; these simple terminal units are called blower coils or fan coil units. A larger air handler that conditions 100% outside air, and no recirculated air, is known as a makeup air unit (MAU) or fresh air handling unit (FAHU)

TechnologyAir Handling UnitType

  1. The air handling unit is availabel in different material quali-ties (f.ex. alu-zinc, stainless steel AISI 316, sea water ressitant steel or painted). The units are also available in an ex-proof version. The unit is designed for optimal energy recovery with availa-ble functions such as enthalpy exchangers or return air, wit
  2. Air handling units are configured to be either blow-through or draw-through units. Blow- through unit is when one of the coil sections is located downstream of the supply fan. Draw-through unit is when one of the coil sections is located upstream of the supply fan
  3. al air volume cfm 480 670 760 1,000 1,160 1,400 1,600 2,000 Air Volume High cfm 480 670 760 1,000 1,200 1,400 1,600 2,000 (at standard Mid cfm 440 640 660 990 1,150 1,340 1,510 1,830 static pressure) Low cfm 340 600 950 1,050 1,260 1,420 1,640 Fan motor Type HP 1HP External static Standard. in W.G. 0.3 0.5 pressure (*2) Max
  4. Air Handling unit (AHU) serves a big part in the ventilation system. AHU's are widely used in commercial buildings, hospitals, malls, industries etc., This v..

Air Handling Unit Basics: Components, Specifications & Type

There are three basic types of an air handling unit. When trying to decide on the purchase of custom air products, Houston residents should choose from the following: Terminal units: Include only an air filter, coil and blower. Simple terminal units are often called fan coil units or blower coils. Makeup air units: Larger air handler that conditions 100% outside air, rather than recirculated air. Rooftop units: Air handler designed for outdoor use and are positioned on roofs; What if your. Different Types of Air Handling Unit. The AHU or air handling unit (regularly curtailed to AHU), is a machine device mainly utilized t to circulate and condition air in vary ways including warming, ventilating, and cooling (the HVAC) system. Generally a huge metal box holding a blower, warming or cooling components, channel racks or chambers.

Air Handling Unit types - Bentle

  1. These Air Handling Units are manufactured by a unique prefabricated system using modular sized double skin sandwich panels. The system enables a wide range of Air Handling Units of various sizes, configurations and applications t0Aye built precisely and promptly without compromising their high quality. The Quality Management System Of these.
  2. Types / Air Handling Units. Custom Air Handling . C-Series (250-250,000 CFM) Products . Custom Air Handling . Custom Air Handling Units. Custom Air Handling . Custom DX Package. Custom Air Handling . D-Series. Constant Volume AHU . Destiny® (600-15,000 CFM) Products . EVO (680-20,500 CFM) Products . Indirect or Direct-Fired Space Heater.
  3. Air Handling Units - Overview | 7 Compact air handling units 200 Supply air handling units intended for small to medium-sized premises. Available in 7 sizes and supplied complete with control system, fan, heating coil and filter. False ceiling units for small and mediumsized premises. Available in 3 sizes and in 3 versions
  4. Fresh Air Handling Unit. Fresh air handling units are used when mixing air is not desired. In cases where fresh air plants are used, the exhaust process is provided by cell aspirators. You can visit the related page to review all our air handling unit models
  5. Package hygienic air handling units; It is used in applications with high hygiene requirements such as health, food, medicine and chemical industries. With the use of such units, it is ensured that the particles, bacteria and viruses that spoil the sterilization in the environment are removed and the fresh air taken from the external.
  6. With a modularized air handling unit construction, it is basically possible to combine the different parts as you need. Right or left, one, two, three, or four duct connections that are side-mounted or top-connected. Depending on the application, the rotary heat exchanger or the counterflow heat exchanger can also be selected

HVAC System 54. 6.1.1. Single zone. A single zone system consists of an air handling unit, a heat source and cooling source, dis-. tribution ductwork, and appropriate delivery devices. The air. Beside the type of coil used, the other components are common such as the blower fan & filters. FCUs are usually available from0.75 to5 TR from various brands across the globe. AHU is the abbreviation used for AIR HANDLING UNIT; is an adavnce type of FCU beyond5 TR capacity

What is air handling Unit Diagram , Types of Air

  1. The outdoor unit contains the condenser and compressor whereas the indoor unit contains the evaporator coil and blower. The indoor unit is often connected to a furnace or heat pump. Split-system central air conditioning is the most common type of heating and air-conditioning for residences, it also happens to be the least expensive to install
  2. Air Handling Unit Basics. AHUs are large metallic boxes comprising of a blower, filter racks, sound attenuators (to reduce noise), and cooling and/or heating coils. Connected to the HVAC's ductwork, AHUs are installed inside and outside of buildings, with the rooftop being common for the latter. While commonly known as large machines, it.
  3. The air handling unit (AHU) is just one component of the whole HVAC system. The air handling unit (AHU) is a piece of equipment used to re-condition and circulate air as part of a heating, ventilating, and air-conditioning system. The basic function of the AHU is taking in outside air, re-condition it, and supply it as fresh air to a building

Air Handling Unit AHU is a device used to condition and circulate air as part of a heating ventilating and air-conditioning (HVAC) system. It is a large metal box containing a blower, heating or cooling elements, filter racks or chambers, humidity & temperature control loops Created Date: 1/17/2011 4:43:00 P An air handler, or air handling unit (often abbreviated to AHU), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning (HVAC) system.[1] An air handler is usually a large metal box containing a blower, heating or cooling elements, filter racks or chambers, sound attenuators, and dampers.[2

Air flow: 1,000 m³/h - 30,000 m³/h. Description Air handling unit designed for industrial applications and clean rooms (plastics processing, automobile and pharmaceutical industries, laboratories, hospital sector, microelectronics).. Types of air handling unit There are two main types of air handling unit — the 'blow-through' and the 'draw-through'. The blow-through AHU has a fan which blows the air through the mixing box, cooling coil and filters before it goes to the ducting network The inside end is little more than a coil and fan in a box, with controls. The largest capacity unit of this type is about 50000btu, 15kw. Larger capacities are possible but the type of equipment goes on to modular chillers and air handling units basic air handling unit (ahu) consists of:- a)fan section with centrifugal fan and motor b)coil section with coil c)filter section with filters types of air handling units (ahu) a) single skinned ahu b) double skinned ahu 32. commonly used equipment (air handling unit) depending on space availability for ahu , the ahus are classified as under. Fans in Air-Handling Systems This ENL broadcast will discuss the application of fans in air-handling systems, including fan laws, fan-system interaction, fan performance curves, types of fans, and proper selection, installation, and operation of various fan types (efficiency, acoustics, and footprint). By attending this event you will learn how to

Air Handling Unit - Air Conditioning System

Air Cooled Screw Chiller Air Handling Unit Fan Coil Unit Rooftop Packaged Unit Residential & Commercial Ducted Split Unit Variable Refrigerant Flow. Customized. Fresh Air Ahu's with Dx Condensing Units Customized Condensing Units Customization for Industrial / Oil & Gas Sector. Air Handling Units Modular Type GAH Series. The air handling units are very important parts of the central air conditioning plants, packaged air conditioning plants and also the roof mounted split air conditioning systems. As the name suggests air handling unit is the box type of unit that handles the room air. It comprises of the cooling coil over which the hot return air from the room flows, gets cooled and flows back to the room to. These units filter the air passing through them at a very fine scale. The U.S. Department of Energy (DOE) and its contractors use HEPA filters that meet DOE standard STD-3020-97, Specification for HEPA Filters Used by DOE Contractors, to filter 99.97 percent of all particles 0.3 microns or larger. Washable air filters Central station air handler The central station air handler is a heating, ventilating, or air-conditioning unit that is centrally located in, or on, a building or structure and from which air is distributed to desired areas through a system of ducts. The 39S factory packaged unit Individual components, such as fans, coils, and filters, ar

a. Air handling equipment. Computer room air-conditioning units located within the mission critical areas of the C4ISR facility are typically chilled water type units served by a liquid chilling system. Where practical, divide the area's cooling load between two or more smaller units to satisfy the required cooling capacity Air handling units in heat- and sound-insulated casing. Air flow up to 670 m³/h. Heat recovery efficiency up to 92 %. VENTS VUT/VUE 250 H mini air handling units with heat recovery. More. Air handling units in compact sound- and heat-insulated casing with horizontal duct connections. Maximum air flow - 260 m³/h

Air Handling Units Explained - The Engineering Mindse

Air Handling Unit. An Air Handling Unit (AHU) is used to re-condition and circulate air as part of a heating, ventilating and air-conditioning system. The basic function of the AHU is to take in outside air, re-condition it and supply it as fresh air to a building. All exhaust air is removed, which creates an acceptable indoor air quality Build performance, reliability and flexibility into your custom air handler solution. Carrier's Aero® air handlers provide advanced technology and custom features in streamlined, easy-to-install packages. Indoor and outdoor units are available to handle a wide variety of applications. 6 Product (s AirCraft Air Handling of Stafford provide bespoke AHU - Air Handling Units and Ventilation Units for all learning environments including Ventilation Units for Classrooms, Lecture Theatres and Study Areas, Libraries, Residential Areas, Drama Theatre and School Halls. Ventilation units are also available for Toilets, Changing rooms and swimming pools


The air handling unit is a large box type of unit that comprises of the evaporator or the cooling coil, air filter and the large blower. After leaving the thermostatic expansion valve the refrigerant enters the cooling coil where it cools the air that enters the room to be air conditioned. The evaporator in the air handling unit of the DX. A schematic diagram of an air handling unit with its main components. The main components of the air handling unit shown in Figure 1 are described below: Supply fan. Centrifugal fan type is used to provide the conditioned air to various zones. Fan motor. Electric motor is used to provide the rotating motion to the supply fan. Cooling coil. Coil. About products and suppliers: If you are trying to purchase air handling unit cost at the most competitive prices and uncompromised quality, Alibaba.com is the ultimate destination for you. The distinct varieties of air handling unit cost offered on the site are high quality and made utilizing the latest technologies that assure long-lasting quality and endurance Warm, moist air naturally rises due to the density differential to the dry, cooler outside air. C- Air Handling Units & Fan Coil Units An air handling system is a means of providing conditioned air to the space in order to maintain the environmental requirements. Types of AHU AHU's are available in a wide range of sizes

An air handler, or air handling unit (often called an AHU), is used to condition and circulate air as part of an HVAC system. An air handler usually contains a blower, heating or cooling elements, filter racks or chambers, sound attenuators, and dampers Roof Air Handling Units/Central AIir Handling Units. Roof AHU/Air Handling Units. Commercial Air Handling Units. Air Handling Unit Heat Recovery. Chilled Water AHU. Marine Air Handling Unit. HVAC System Air Handing Unit. Fresh Air Air Handling Units. Ceiling Type Air Handling Unit(4000~8000m3/h) Air Hander. AHU. Air Handling Units. Total 1 Page. We are highly engaged in offering superior quality Air Handling Units. Our given air handling units are developed in fulfillment with set market standards using high quality material. The air handling units provided by us are accessible on varied specifications as per the needs of customers

Buy Air Handling Unit from Invoke Medical System Pvt. Ltd. Find Company contact details & address in Lucknow, Uttar Pradesh | ID: 501302 Vertical Air Handling Indoor Unit40VMV. Vertical Air Handling Indoor Unit. The Bryant VRF Vertical Air Handling unit is a multi-positional unit- vertical and horizontal- ideal for closet applications. Product Line A terminal unit is a device that is used to regulate the volume of conditioned primary air from the central air handler to the occupied space. Watch this video to learn more! Terminal units are available in several different types, each designed to suit specific applications.The terminal unit types listed below are the most common.

What is an air handling unit (AHU)? - AirTecnic

Unit Coolers consist of a vane axial fan and motor, a DW type duct cooling coil, with air filters and directional louvers built as a single unit for overhead mounting; MIL-C-2939. Marine Grade Air Handling Units (AHU Air Handling Unit Components 2: Heat - There are many different types and arrangements of heating systems for air handling units and these types of heating systems and arrangements of heating systems vary from commercial to residential. Some air handling units do not.. Air Handling Units Unparalleled Design Flexibility. YORK® Solution™ and YORK® Custom Air Handling Units provide design flexibility that balances performance and economy without compromising quality. With a full line of standard, semi-custom and custom air handling units to choose from, we have a system perfectly aligned to your building's.

Air handler - Wikipedi

and mixed with outside air. Several types of air handler designs are available, including variable air volume, dual duct (hot deck/cold deck), multi-zone, and make-up air units that provide 100% outdoor air. The basic design type reviewed in this best practices guide is a variable volume AHU. Significant improvements have been made to the. The Johnson Controls Air Handling Unit (AHU) Controller is a complete digital control system for most common air handling configurations, including single zone, variable air volume, multi-zone, and dual duct. You may use the AHU as a standalone controller or connected to a FMS. When connected to the FMS, the AHU provides all point and contro Packed Units- types of air conditioning 5. Packaged Units. A packaged unit is a compact air conditioning system that works best for a home without a basement. If your home was built on a crawl space, there's no indoor furnace or air handler. A packaged air conditioning unit is installed outside, so this is a great solution Fans are mechanical units designed for air transportation in the ducts, direct air supply or air exhaust from the premises. Air is moved due to the pressure drop between the fan inlet and outlet vent. An axial fan has the form a cylindrical-cased wheel with the impeller fixed to a bushing at some angle to rotation plane.As the impeller blades rotate air is trapped betwen and is moved further.

Air Handling Unit (AHU) Fundamentals with Cooling

† Poorly designed, cleaned or maintained air handling systems; † Moving or rotating equipment. The effectiveness of control of the main types of microbial contamination by environmental air handling is summarised in Table 1. Differential operational states Normal production In the normal operational state, the air handling syste This type of air conditioner unit features a single exterior compartment housing a condenser that feeds various evaporators throughout the house's interior. Benefits Of Mini-Split Air Conditioners. Flexibility; With a mini-split air conditioner, you can typically install about four evaporators within the house. The small nature of these units. Air handling units (AHU) are the lungs of any HVAC system. An air handling unit is a device used to regulate and circulate air as part of the heating, ventilation and air conditioning system. The AHU takes in outside air, reconditions (filtered and either heated or cooled) it and supplies it as fresh air to the air conditioned room

What are Air handlers or Air Handling Units or AHU

Owing to our ultra modern infrastructure unit and vast knowledge, we are instrumental in providing Air Handling Unit. The offered handling unit is used to supply and circulate air around a building, or to extract stale air. In addition to this, offered handling unit is available with customized facility that suits the demand of the clients General Air Handling Unit Checklist (Fact Sheet), Saving Energy In Commercial Buildings, NREL (National Renewable Energy Laboratory) Author: J. Dean: NREL Subject: Part of a series of 34 energy efficiency checklists, data collection forms, and how-to guides, this General Air Handling Unit Checklist describes the practices to save energy for.

What is Air Handling Unit (AHU)? Diagram, Parts & Working

The Trane indoor make-up air handler product line is a packaged air, heating and cooling system, suitable for heating, cooling, ventilating and make-up air applications. These units are designed for indoor use only. Unit sizes range from 900 to 9,800 cfm (0.4-4.6 cu m/s) with 1/ 2 to 15 hp motor capabilities. These units are availabl Fresh Air Handling Units delivering a constant volume of fresh & cleaned air. The fresh air handling unit offered by our company performs excellent and serves the clients in the best way. Our design engineers can tailor Fresh Air Handling Units to your exact requirements and helping to make it fit where space is crucial

FOUR POOL - Package Type Dehumidifier Units. FOUR-POOL Pool Dehumidifiers are used to dehumidify indoor pools. If the partial pressure of the water vapor in the ambient air is lower than the saturation pressure, evaporation occurs on the pool water surface. As a result, the amount of moisture in the air increases to an undesirable level units to operate between 0°F and 40°F in the cooling mode. Standard cooling is allowed to 45°F. (Not designed for operation on heat pump units). Air Handling Unit Features and Benefits Features These air handlers can be arranged for a variety of air discharge patterns in either the horizontal or vertical position Air Handling Unit comes in three types. The Mall air handlers or terminal units are used for local use They mainly consist of coil, air filter and blower. Then there is the Make up Air Unit, which is larger air handler. The third one is the Roof Top Unit, which is mainly used for outdoor use. It is mainly fitted n the roof of a building - Air handling unit, dual duct - Air handling unit, multizone - Air handling unit, single zone - Air handling unit, variable air volume - Air handling unit, variable volume, variable temperature - Evaporative cooling unit, direct - Fan coil unit - Heating and ventilating system - Heat pump, air-to-air - Heat pump, water-to-air, geothermal. The AHU (i.e. air handling unit) must be an air purification unit and air filtration unit. There must be two sets of washable flange type filters of efficiency 90% down to 10 microns and 99% down to 5 microns with aluminium/ SS 304 frame within the AHU. The necessary service panels to be provided for servicing the filters, motors & blowers. HEP

AHU Filter Types And Uses (Air Handling Unit) ️ ️ ️ - YouTub

Visit our website today to take a look at the Air Handling Units we have to offer here at CIAT. To find out more, make sure to call us on 01372 889451 There is nothing quite as satisfying as a blast of cool air during hot summer months. If you're considering installing air conditioning for your home, then you'll definitely want to get your money's worth. Choosing the right AC units is not a decision to be taken lightly. This is why I've created a list of 8 types of air conditioners with their pros and cons so you can make an informed. An air handling unit (AHU) is used to condition and circulate air as part of a heating, ventilating and air-conditioning ( HVAC) system. The air entering an AHU usually passes through an air filter, across the heating/cooling coil and then the supply air fan, providing the correct volume and pressure or conditioned air to the ductwork system

Air Conditioning System Working Principle Animation - YouTubeMultiple Roof Systems; Rooftop Package Unit Condensate

What is an Air Handling Unit (AHU)? - Custom Air Products

managers can implement to protect building air environments from a terrorist release of chemical, biological, or radiological contami-nants. These recommendations, focusing on filtration and air clean-ing, are part of the process to develop more comprehensive guidance. Working with partners in the public and private sectors, NIOSH wil Petra Air Handling Units meet the highest engineering and performance standard.s The units can be constructed in almost any shape and dimension to meet clients' restricted spaces in a mechanical room or on top of a roof. The unit cabinet can be arranged in almost any configuration tailored for the clients requirements

Our items are exported around the world, enjoying a great popularity among the customers for Vertical Modular HVAC Type Chiller Ahu Air Handling Unit. We are constantly improving our sales services. We has obtained high-quality and outstanding reputation. Hot Tags: vertical air handler unit, China, manufacturers, suppliers,. With close to 70 years of experience within our field, Novenco Marine are among the world leaders in supplying HVAC+R systems. Novenco Marine develop and manufacture high-quality heating, ventilation, air-conditioning and refrigeration solutions for marine and offshore applications Air Handling Units; Hygienic Air Handling Units; Ceiling Type Fan Coil Units; 4-Way Cassette Fan-Coil Units; Air / Water Cooled Chillers & Heat Pumps; Polyvalent Heat Pumps; Roof Top Package Air Conditioners; Package Hygienic Air Handling Units; Support & CommunIcatIon; Contacts; Call Centers; Documents; Be Distributor; Communication Form. within the air handling unit. The following are some of the most common microbes found in any air handling units. If left unattended, these microbes can adversely effect the performance of the air handling unit. Airborne Microbial Agents Viral and bacterial microbes account for 60-80% of indoor air quality problems. The Solution AH

Different Types of Air Handling Unit Air Handling Uni

CAIRplus is the tailor-made premium range of air handling units for every customer need. Environmentally-friendly design means an energy recovery system with high efficiency is available for every configuration. Clean surfaces and ease of cleaning guarantee highest certified hygienic standards. Intelligent modular design ensures easy handling. ADD Filtration is a leading UK supplier of commercial air handling unit (AHU) and air conditioning (AC) HVAC ventilation Panel Filters, Bag Pocket Filters, HEPA Filters and Fume Extraction products. Our customer sectors include office, retail, shopping centres, data centres, hotels, restaurants, leisure, education, pharmaceuticals, electronics. ing increasingly more important to maximize air handling system efficiency. McQuay has met this challenge by offer­ ing a combination of up to six different fan wheel diameters and types in today's most commonly used air handler sizes For McQuay, this means the low and medium pressure unit sizes 114 through '172 . ceiling-mounted air handling unit COMFORT LINE. single-flow. ceiling-mounted air handling unit. COMFORT LINE. Power: 600 W - 9,000 W. Use : The Comfort Line ductable unit is designed for installation in ceiling voids to heat and cool spaces in large businesses, hotels and healthcare facilities DX type Fresh Air Handling Units (Refrigerant options: R22, R407c, R410a, 134a, & R404a) Available in both chilled water and direct expansion system; Optional Features. Custom built units to suit site requirements. Unit colour to match the building exteriors. Electro-tinned Evaporator Coils

Air Handling Units - HTS Commercial & Industrial HVAC

LG Air Handling Unit is a flexible air handling solution for a fresh and comfortable indoor environment that will you have feeling your best. LG AHU provides a better indoor environment with an energy-efficient system during all seasons Handling Unit Examples. Six boxes on one pallet is one handling unit. Six boxes on one pallet plus one palleted crate equals two handling units. A wrapped kayak is a handling unit; Every handling unit should be labeled if its contents are fragile, contain hazardous material or if the handling unit is not stackable. Ready to Ship Something? Get. Belt Drive : All Belt driven Air Handling Unit Blowers/Fans are provided with EN-8 Steel shaft extension running in Ball bearing of different types like Pillow Block Pedestal, Sleeve Type Pedestal, Single bearing Type, etc. Air Handling Unit Blowers/Fans are provided with V type or Flat Pulley of suitable size. Complete Shaft and Bearing. An air handling unit is usually a large metal box containing a blower, heating or cooling elements, filter racks or chambers, sound absorbers, and dampers. Airhandlers usually connect to a ductwork ventilation system that distributes the conditioned air through the building and returns it to the AHU

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These Air Cooled Condensing Unit Are Highly Durable And Strong And Are Iso 9001: 2015 (ukas Certified). Advanced Control Options. Our Modular Cold Room Series Is An Integrated Family Of Sandwich Panels Designed Forquick Cold Room Assembly. The Panel Configuration Has Been Reduced To A Minimum, So The Overall Effect technology equipment, as air handling space. Often, the NEC definition of these terms differs from their common use in the industry - however, UL is compatible with the NEC terms and definitions. Therefore, the space above a hung (or drop/suspended) ceiling utilized as an air return to the HVAC unit is considered an air handling space The purpose of a rooftop unit is to distribute conditioned air within define areas of a building. Rooftop units are connected to ductwork which provides a defined route for the conditioned air to travel along. AHU v RTU. Now in our last tutorial we looked at air handling units or AHU's Pharmaceuticals AHU Air Handling units. We are one of the Leading manufacturer, supplier and exporter of Pharmaceutical AHU (Air Handling units) for Pharmaceutical manufacturing units required to maintain ISO Class and obtaining WHO Certification. These Pharmaceuticals AHU (Air Handling units) are highly durable and strong and are ISO 9001: 2015 (UKAS Certified)