Clean Room Ventilation System – HVAC

With years of experience in cleanroom manufacturing and hundreds of successfully completed projects, Mecart can design and supply the best clean room HVAC units, meeting both your requirements and your budget.

Since the clean room HVAC air handling units are at the heart of your clean room, it should not be taken lightly. With our experienced in-house engineering team, Mecart will analyze all the aspects of the clean room ventilation system in order to design and build you a comfortable cleanroom that exceeds your requirements.


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hvac system for modular clean room

What is an HVAC ?

Mecart HVAC Ventilation System For Cleanrooms

HVAC stands for Heating, Ventilation and Air Conditioning. It is a general term for indoor environmental comfort, which creates indoor air quality (air change per hour, CFM, temperature and humidity).

When it comes to cleanroom HVAC systems, it means a lot more than comfort. The cleanroom air handling system controls the temperature and the humidity to your appropriate levels of precision, similar to standard HVAC. In addition to comfort, cleanroom HVACs differentiate themselves from conventional systems with their increased air supply, airflow patterns, use of high efficiency clean room filters and room pressurisation. The increased air supply brings more air changes per hour with new HEPA filtered air circulating into the cleanroom many times per hour.

Clean room HVAC designs involve knowledge of regulations, cleanliness level guidelines, airflow, room pressurisation, temperature control, humidity control and accounting of activities taking place inside.

Our HVAC Features & Benefits

Custom design

Mecart will design and build  an HVAC system to meet any types of cleanrooms ventilation needs and will install the entire system, including clean room ducting.


Our custom-made horizontal or vertical air handling units are perfect for space restrictions. Different engineering configurations and air tunnel options are also available which can be located on the floor or on the roof. They can be preassembled at Mecart or pre-fabricated and assembled on site.


Performance & Compliance

Mecart designs HVACs using our experience and expertise. Clean room performance and compliance is directly related to the ventilation. As stated in ISO standard 14644-1, “to minimize the introduction, generation and retention of particles, the clean room must be supplied with a large quantity of air filtered with high efficiency filters (HEPA or ULPA) to dilute and remove particles, bacteria and chemicals from within the room”. This is the HVAC’s job. Mecart guarantees the performance and compliance of its HVAC cleanroom systems.

Durability & Ease of Maintenace

Our HVAC systems are heavy-duty and maintenance free. Factory-installed components and control systems simplify job-site coordination, reduce installation time and expenses, and provide single-source responsibility for warranty and service issues.

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Cleanroom Air Handling Solutions

mecart hvac air handling unit for clean room

Mecart Air Handler

Whether you need temperature/humidity control precision, specific air flow, have space constraints, or any other specific requirements, let Mecart design your clean room air handling unit to meet your specifications.

  • Airflow: 500 to 30 000+ CFM
  • Heavy duty construction (16 gauge galvannealed steel painted or optional stainless steel)
  • Automated pressure and flow control system (real time compensation)
  • Vertical or horizontal configuration
  • Direct drive plenum fan: silent operation and zero maintenance
  • Modular construction pre-assembled or assembled on site
  • Walk-in units for ease of maintenance

3rd Party HVAC Units

If you are already working with your preferred HVAC contractor/supplier, Mecart can supervise the integration into its cleanroom design. We can also outsource your specified HVAC unit and manage the installation and commissioning.

Trane HVAC System

Fan Filter Units (FFU)

FFUs are an alternative to HVAC systems in a less stringent ISO class of clean rooms. FFUs are often used in projects with height restrictions, rather than HVAC systems where the installation of makeup air ducts and recirculating air needed require much more space. FFU configuration is often a cost effective option, if you don’t need to cool your room (low heat gain), since it uses the air directly from the main building. This eliminates the need for a second ceiling above your cleanroom to create a plenum.

Generally, FFUs cannot create pressure head as strong as the air handling unit (AHU) and build a cascade of positive pressure. Another thing to consider is the noise generated by the fan inside the FFUs (just above your head). For large cleanrooms with many FFUs, this noise can become an issue.

Our in-house acoustical specialist can simulate FFUs usage to help you select the most appropriate option for your clean room project.



Get a state-of-the-art, long-term asset that exceeds your requirements and expectations.

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