How often should HEPA filters be replaced?

HEPA filter life varies between 2-5 years depending on operating conditions. Regular replacement of pre-filters and bag filters significantly extends HEPA life. Differential pressure monitoring accurately determines replacement timing.

How is cleanroom classification determined?

Classification is based on airborne particle count according to ISO 14644-1. For example, ISO 5 is commonly used for operating rooms, while ISO 7-8 is typical for pharmaceutical production areas.

Can HEPA filters be added to an existing ventilation system?

HEPA filter integration is possible depending on the existing system's capacity and pressure drop. However, AHU revision is generally recommended for multi-stage filtration.

Do you provide validation services?

Yes, NOVVES provides validation services for all hygienic ventilation projects, including particle count testing, DOP/PAO filter integrity testing and pressure mapping.

Hygienic FiltrationVentilation

Ventilation in hygienic areas; Beyond comfort, it is a critical engineering barrier that directly affects human health, product quality and operational safety. Air in operating rooms, intensive care units, clean rooms, pharmaceutical production facilities, food production areas, laboratories, hospital services, industrial kitchens and veterinary/livestock areas; It should be checked for particles, pathogens, odor, moisture, cross-contamination and pressure difference. Improper air flow in these areas; It may cause infection risk, product contamination, condensation, microbiological reproduction and occupational safety problems.

NOVVES offers integrated ventilation solutions specifically for critical areas with TIGER HYG hygienic air handling units, TURTLE cell fans, DRAGONFLY smoke/exhaust solutions, CARACAL heat recovery devices, HUMMINGBIRD EC fans, HOUND sealed dampers, BUTTERFLY kitchen exhaust fans and NAUTILUS heavy duty fans. System designs; It is designed according to criteria such as HEPA/ULPA filtration, positive-negative pressure cascade, laminar air flow, zero recirculation, condensation control, wash-down resistance and cross-contamination prevention.

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Sector / Building Type

Recommended product groups by sector and building type for NOVVES solutions.

Sector / Building Type	Description	Products Used	Product Family Names
Operating Rooms & Intensive Care Units	Microbiological filtration, pressure control	Hygienic AHU, HEPA Filter, UV-C Fan	Tiger, Scallop, Turtle
Cleanrooms	Particle control, hygiene level between class 100-100,000	HEPA System Fan, Pressurized AHU	Turtle, Scallop, Caracal
Pharmaceutical Production Facilities	GMP compliant, filtering and pressure control	Hygienic Air Handling Unit, Filtered Cell Fan	Tiger, Scallop, Turtle
Food Production Areas	Hygienic air circulation, odor and particle control	Hygienic AHU, EC Fan, Filter, Stainless Body	Tiger, Hummingbird, Scallop
laboratories	Gas and particle control, negative/positive pressure zoning	HEPA Filtered Cell Fan, Damper, Filter	Turtle, Hound, Scallop
Hospital Service Floors	Fresh air supply, odor and infection risk control	Hygienic AHU, EC Fan, Duct Fan, Filter	Tiger, Hummingbird, Koi, Scallop
Busy Kitchens (Industrial and Medical)	Oil mist + air quality control, need for washable filter	Kitchen Fan, Cellular Fan, Filter	Butterfly, Turtle, Scallop
Livestock and Veterinary Clinic Areas	Microorganism and bad odor control	Fan with Filter, EC Fan, Heat Recovery	Scallop, Hummingbird, Caracal

Operating Rooms & Intensive Care Units
Microbiological filtration, pressure control
Products Used: Hygienic AHU, HEPA Filter, UV-C Fan
Tiger, Scallop, Turtle
Cleanrooms
Particle control, hygiene level between class 100-100,000
Products Used: HEPA System Fan, Pressurized AHU
Turtle, Scallop, Caracal
Pharmaceutical Production Facilities
GMP compliant, filtering and pressure control
Products Used: Hygienic Air Handling Unit, Filtered Cell Fan
Tiger, Scallop, Turtle
Food Production Areas
Hygienic air circulation, odor and particle control
Products Used: Hygienic AHU, EC Fan, Filter, Stainless Body
Tiger, Hummingbird, Scallop
laboratories
Gas and particle control, negative/positive pressure zoning
Products Used: HEPA Filtered Cell Fan, Damper, Filter
Turtle, Hound, Scallop
Hospital Service Floors
Fresh air supply, odor and infection risk control
Products Used: Hygienic AHU, EC Fan, Duct Fan, Filter
Tiger, Hummingbird, Koi, Scallop
Busy Kitchens (Industrial and Medical)
Oil mist + air quality control, need for washable filter
Products Used: Kitchen Fan, Cellular Fan, Filter
Butterfly, Turtle, Scallop
Livestock and Veterinary Clinic Areas
Microorganism and bad odor control
Products Used: Fan with Filter, EC Fan, Heat Recovery
Scallop, Hummingbird, Caracal