Fresh Air Unit
“Engineered to supply 100% filtered outdoor air for healthier indoor spaces”
Designed to improve indoor air quality across diverse environments, the Fresh Air Unit (FAU) brings in 100% fresh outdoor air, conditions it to the desired temperature, and filters out pollutants using high-efficiency multi-stage filtration. Whether you’re operating a commercial building, hospital, school, or industrial facility, our FAUs ensure your occupants breathe clean, healthy, and climate-controlled air. With optional energy recovery systems, modular construction, and robust certifications like Eurovent, AHRI, and CE, this unit sets the standard for performance, compliance, and efficiency.
Product USP’s
Clean, Conditioned, and Compliant Air Solutions
Delivers completely fresh air directly from the outside environment, ensuring continuous ventilation and significantly improving indoor air quality in enclosed spaces.
Equipped with a combination of pre-filters (G4), fine filters (F7/F9), and optional HEPA filters to remove dust, allergens, microbes, and other airborne contaminants.
Customizable options to condition the incoming fresh air via integrated cooling or maintaining comfort throughout the year regardless of external climate.
Offers heat recovery wheel or plateheat exchanger to reclaim energy from exhaust air, reducing HVAC load and operational energy costs significantly.
Available in single skin, double skin, and thermal/non-thermal break profiles for a wide range of space and performance requirements. Easily scalable to meet project-specific needs.
Fully compliant with Eurovent, AHRI, CE, and ISO standards, ensuring international-grade reliability, safety, and durability in demanding applications.
Key Highlights
Purpose-built to deliver purified, conditioned, and compliant fresh air across diverse environments
The Fresh Air Unit (FAU) is designed to supply 100% outdoor air to enclosed spaces, ensuring a consistent inflow of fresh, filtered, and optionally conditioned air. Ideal for buildings where indoor air quality (IAQ) is critical, the FAU supports multiple air volumes—from 1,000 CFM to over 60,000 CFM—making it suitable for small commercial zones to large-scale industrial and public facilities.
At the core of its construction is a highly durable casing, available in single or double skin panels with thermal break and non-thermal break options. The unit’s modular design allows seamless customization for space constraints, filtration demands, and mounting preferences. The internal sections—including fan modules, coil sections, and filter banks—are designed with accessibility and efficiency in mind, with dynamically balanced centrifugal fans driven by EC or VFD motors for optimized airflow.
A standout feature of the FAU is its advanced multi-stage filtration system, which includes pre-filters (G4), fine filters (F7/F9), and optional HEPA, carbon, or chemical filters—making it suitable for applications in healthcare, labs, data centers, and premium hospitality. The system also offers optional energy recovery via heat recovery wheels or plate-type heat exchangers to reduce energy loss while meeting fresh air requirements, especially in HVAC systems designed for sustainability.
Certified by Eurovent, AHRI, CE, and ISO, the Fresh Air Unit ensures high structural integrity, low casing leakage, excellent thermal performance, and filter efficiency, aligning with international standards. Whether installed in a commercial office, hospital OPD, or an airport terminal, this unit is engineered to enhance air quality, ensure occupant comfort, and optimize operational energy performance.
- 100% Fresh Air Intake
- High-Efficiency Filtration
- Cooling & Heating Options
- Energy Recovery (Optional)
- Easy Maintenance
- Improved Indoor Air Quality
- Humidity Regulation
- Health & Hygiene Support
- Energy Savings (with recovery)
- Regulatory Compliance
- Occupant Comfort &
- Productivity
- Airflow Range:
- Typically from 1000 CFM to 60,000+ CFM, based on project needs
- Air Type:
- 100% Outdoor Air for fresh air supply only
- 100% Outdoor Air for fresh air supply only
- Filtration:
- Multi-stage: Pre-filter (G4) + Fine filter (F7/F9); HEPA optional
- Multi-stage: Pre-filter (G4) + Fine filter (F7/F9); HEPA optional
- Energy Recovery (Optional):
- Heat Recovery Wheel or Plate-type Heat Exchanger for energy efficiency
- Heat Recovery Wheel or Plate-type Heat Exchanger for energy efficiency
- Casing/Frame:
- Rigid, galvanized or powder-coated steel Stainless Steel, Aluminum
- Modular, double & single skin panel construction
- Extruded Aluminum Profile Frame Work (Thermal break & Non-Thermal break)
- Rigid, galvanized or powder-coated steel Stainless Steel, Aluminum
- Insulation:
- 25 mm to 50 mm thick insulation (Density-40 kg/m3 (48 kg/m3, 64 kg/m3, 96 kg/m3 – Optional) (PUF, Glasswool, Rockwool, PIR)
- Provides thermal insulation and acoustic insulation
- 25 mm to 50 mm thick insulation (Density-40 kg/m3 (48 kg/m3, 64 kg/m3, 96 kg/m3 – Optional) (PUF, Glasswool, Rockwool, PIR)
- Base Frame:
- Heavy-duty steel or aluminum base
- Designed for floor mounting and vibration isolation
- Heavy-duty steel or aluminum base
- Panels:
- Removable or hinged access doors
- Inner skin: galvanized steel (pre-coated or powder coated), stainless steel, aluminum
- Outer skin: pre-coated, powder-coated steel, stainless steel, aluminum
- Removable or hinged access doors
- Fan Section:
- EC or VFD-driven centrifugal fans
- Mounted on vibration-absorbing platforms
- Dynamically balanced for low-noise, high-efficiency airflow
- EC or VFD-driven centrifugal fans
- Filter Section:
- Pre-filters in slide-in frames
- Fine filters, (HEPA filters, Carbon filters, Chemical Filters, Electronic Air Cleaner – optional)
- Easy access for replacement
- Pre-filters in slide-in frames
- Eurovent Certified : (Standard EN 13053 & EN 1886)
- Casing strength class : D1
- Casing air leakage class at -400 Pa : L1
- Casing air leakage at +700 Pa : L1
- Filter bypass leakage class : F9
- Thermal transmittance class : T2
- Thermal bridging factor class : TB2
- Casing strength class : D1
- AHRI Certified : Standard 1350
- Casing Deflection Rating Class (Positive) : CD4
- Casing Deflection Rating Class (Negative) : CD4
- Casing Air Leakage Class (Positive) : CL2
- Casing Air Leakage Class (Negative) : CL2
- Thermal Transmittance Class With Leakage : CT2
- Thermal Transmittance Class Without Leakage : CT2
- Thermal Bridging Class : CB2
- Casing Deflection Rating Class (Positive) : CD4
- CE Certified : (EN ISO 12100:2010, EN 60204-1:2018)
- ISO Certified : (ISO 9001:2015)
ZECO Air Engineering Solutions
Looking for a perfect blend of high-performance filtration, energy efficiency, and modular design
Get in touch with us today to discover how our Fresh Air Units can transform your indoor environment. From improved air quality to energy-efficient operation, our solutions are tailored to your unique building requirements..
Applications
- Healthcare / Hospitals
- Pharmaceutical & Biotech
- Food & Beverage Industry
- Commercial Buildings
- Educational Institutions
- Retail & Malls
- Data Centers
- Industrial & Manufacturing
- Hotels & Hospitality
- Airports & Transit Hubs
FAQ's
A Fresh Air Unit is an HVAC system designed to bring 100% outdoor air into indoor spaces, improving air quality and maintaining healthy ventilation levels.
They are commonly used in commercial buildings, hospitals, hotels, malls, schools, data centers, and industrial facilities.
Yes. The FAU can be configured with both cooling and heating coils to maintain optimal indoor conditions throughout the year.
Our units offer multi-stage filtration: Pre-filter (G4), Fine filters (F7/F9), and optional HEPA, Carbon, or Electronic Air Cleaners.
Yes. We offer optional Heat Recovery Wheels and Plate-type Heat Exchangers to improve energy efficiency and reduce operating costs.
No. Our FAUs are designed for easy maintenance with hinged or removable access panels and easily accessible filters and components.
Absolutely. Our FAUs are certified by Eurovent, AHRI, CE, and ISO, meeting global performance and safety standards.
The units are available from 1,000 CFM to 60,000+ CFM, customizable based on your project requirements.
Yes, casing options include G.I., Stainless Steel, Aluminium, and insulation options like PUF, Glasswool, and PIR in various densities.
Single skin is more economical and suits basic applications, while double skin offers better insulation, sound reduction, and structural strength—ideal for premium or high-performance environments.
