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HVAC systems

Nowadays stricter requirements are imposed on the indoor climate in buildings. An air handling unit or heat recovery unit ensures that the air in a building is always of good quality. Mark Climate Technology is happy to help you with clean air and a healthy working environment.

AIRSTREAM heat recovery unit
AIRSTREAM heat recovery unit
  • Efficiency > 90%
  • Air amounts between 600-45000 m³/h
  • 45 mm environmentally friendly foam sandwich panel
  • The outer panelling consists of galvanized plate coated in RAL 9002 (white – grey) Other colors available on request at extra cost.
  • The internal panelling is made of Magnelis ZM310 with a C4 corrosion resistance
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COMPACT heat recovery unit
COMPACT heat recovery unit
  • Compact and standard construction
  • The outer panelling consists of galvanized plate coated in RAL 9002 (white – grey)
  • Counter flow plate heat exchanger
  • Bypass for night ventilation and cooling
  • EC fans
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ERV heat recovery system
ERV heat recovery system
  • High efficiency for optimal air comfort
  • Exchange of heat and moisture
  • Energy-saving BLDC motor with 10 speeds
  • Innovative HR counter flow exchanger
  • Low weight
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FLATLINE LW ceiling heat recovery unit
FLATLINE LW ceiling heat recovery unit
  • Quiet
  • Compact and standard designs
  • Double-walled insulated aluminum AlMg3 casing
  • Aluminum counterflow heat exchanger
  • Bypass for night ventilation and cooling
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AIRSTREAM AHU air handling unit
AIRSTREAM AHU air handling unit
  • Air displacements up to 150,000 m3/h
  • Very economical to buy and use
  • Integration of high efficiency heating modules is possible
  • Modular construction
  • Easy to maintain
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CALFLO make-up air system
CALFLO make-up air system
  • Stainless steel line or box burners
  • AlMg3 seawater-resistant aluminium housing (single-skin or double-skin)
  • Low weight
  • Available for both inside and outside installation
  • Large air displacement
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Because
of Lisa

and many others, we turn innovative climate concepts into reality.

Dedicated
to people
Lisa
Heat Generation Unit (R290)
Heat Generation Unit (R290)
  • Natural refrigerants (R290 propane)
  • Cooling up to 7°C and heating up to 55°C
  • Plug & Play installation
  • Buffer tank fully assembled
  • Primary circulation pumps fully assembled, secondary circulation pumps by arrangement
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Eurovent-Mark-Climate-Technology
RLT-Richtlinie-Mark-Climate-Technology
VCA-Mark-Climate-Technology
Dekra-Fgassen-Mark-Climate-Technology
Our own Mark service department, with extensive experience in the field of service and maintenance, is SCIOS certified.
Mark Climate Technology has been ISO 9001 certified for 25 years.

Understanding HVAC Systems and AHUs

HVAC Air Handling Units for Buildings

HVAC means Heating, Ventilation, and Air Conditioning. These systems keep buildings comfortable by controlling temperature, humidity, and indoor air quality. Businesses, schools, hospitals, factories, and retail spaces all use them.

The air handling unit (AHU) forms the heart of many HVAC systems. The AHU system moves and conditions air so the indoor environment stays healthy and pleasant.

What Are Air Handling Units?

An air handling unit (AHU), also called an air handler unit, is a large system. It moves air, filters it, heats or cools it, and can add moisture when needed.

Main components of an HVAC system:

  • Fans – push and pull air through supply and return ducts
  • Filters – capture dust, allergens, and pollutants
  • Heating and cooling coils – adjust air temperature using hot or chilled water, refrigerants, or electric heating
  • Humidifiers – control moisture levels in the air
  • Mixing boxes with dampers – combine fresh air with recirculated air to save energy

All parts of an air handling unit (AHU) work together to deliver clean, comfortable air.

Why AHUs Matter

Modern air handling systems and HVAC AHUs do more than move air:

  • Keep occupants comfortable in all seasons
  • Maintain high indoor air quality
  • Save energy with variable-speed fans and smart controls
  • Operate reliably and reduce maintenance needs

Types of Air Handling Units

Different facilities use different AHUs:

  • Compact air handlers (fan coil systems) – serve single-zone spaces like offices
  • Packaged rooftop units – manage large commercial AHUs for multi-zone buildings
  • Modular AHUs – offer flexible designs built from standard sections
  • Custom air handling units – meet special needs in cleanrooms, laboratories, or manufacturing

See examples of custom air handling unit designs.

Engineering and Specifications

When you choose an AHU, check these key air handler specifications:

  • Airflow rate and air handler dimensions
  • Filter type and efficiency
  • Heating and cooling capacity
  • Control system integration

The right size ensures energy efficiency and strong performance. Oversized systems waste energy, while undersized units fail to keep spaces comfortable.

Explore detailed air handler specifications and sizing tips.

Installation and Maintenance Best Practices

An air handling system works best when professionals install it and maintain it regularly:

  • Replace filters to keep airflow strong
  • Clean coils to boost heat transfer
  • Calibrate controls for accurate performance
  • Seal ducts to stop leaks
  • Use smart thermostats and variable frequency drives

Benefits for Building Owners

A high-quality HVAC unit offers these advantages:

  • Lower operating costs through energy efficiency
  • Cleaner indoor air and balanced humidity
  • Longer life for HVAC equipment
  • Compliance with energy and air quality rules

Partnering With an AHU Manufacturer

A skilled AHU manufacturer delivers more than equipment. They design the air handler supply to fit the exact requirements of your project.

Find industry-leading AHU solutions from MarkClimate.

Mark Climate Technology: Precision HVAC Solutions

Mark Climate Technology supplies commercial, industrial, and custom air handling units for many applications.

Product range

  • Compact fan coil units for smaller areas
  • Durable packaged rooftop systems for large-scale projects
  • Flexible modular configurations for a wide variety of needs
  • Custom-designed AHUs for mission-critical environments

Key features

  • High-efficiency fans and motors
  • Advanced filtration systems
  • Precision-engineered coils
  • Energy recovery systems that reuse heat or cooling

MarkClimate partners with installers, engineers, and building managers. Together, they ensure each unit fits perfectly, whether for a new building or a retrofit project.

Making the Right Choice

The right HVAC AHU or commercial air handler unit improves comfort. It also lowers energy bills and keeps the system reliable for many years. Match air handling unit suppliers to your building’s size, purpose, and climate.

Additional Considerations for AHU Systems

When you plan an air handling unit system, think about how it will work with other building services. A well-designed HVAC air handling unit connects to a building management system (BMS). This setup allows real-time monitoring and control. You can check air handler specifications quickly.

You can also adjust air handler dimensions to fit tight spaces. Use demand-based ventilation to save energy. Working with skilled air handling unit manufacturers helps ensure the system meets performance goals and follows local energy rules. The right partner will help you build a reliable, efficient, and future-ready HVAC solution.

Take control of your building’s climate and efficiency. Contact Mark Climate Technology for expert advice on air handling unit systems and custom HVAC solutions built for your needs.

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