Exhaust Duct Work

The system first collects air containing smoke, fumes, odor, moisture, heat, dust, grease vapor or chemical contaminants from the required area.

Exhaust hoods, kitchen hoods, exhaust grilles or local exhaust points capture the contaminated air before it spreads across the space.

The collected air travels through exhaust ducts such as GI exhaust duct, stainless steel exhaust duct, rectangular exhaust duct, round exhaust duct or spiral exhaust duct, depending on the project requirement.

The exhaust fan or exhaust blower creates negative pressure and pulls air through the ductwork system.

The exhaust air is discharged outside the building through an exhaust outlet, weather louver or discharge point placed at a suitable location.

Correct duct sizing, fan capacity, dampers and air balancing help maintain proper exhaust airflow and pressure control.

General exhaust ductwork is used for removing stale air, odor, heat and indoor pollutants from commercial and residential spaces.

Kitchen exhaust ductwork removes smoke, heat, grease vapor and cooking odor from commercial kitchens and restaurant kitchens.

Grease exhaust ductwork is designed for kitchen hood exhaust systems where grease-laden air must be removed safely.

Toilet exhaust ductwork removes odor, moisture and stale air from toilets and washrooms.

Bathroom exhaust ductwork removes humidity, moisture and odor from bathrooms.

Smoke exhaust ductwork removes smoke from basements, parking areas, lobbies and fire safety systems.

Fume exhaust ductwork removes chemical fumes, vapors and harmful gases from specific process areas.

Laboratory exhaust ductwork removes chemical fumes, vapors and contaminated air from laboratory spaces.

Industrial exhaust ductwork is used in factories, manufacturing plants, workshops and production areas.

Dust extraction ductwork removes dust particles from machinery, cutting areas, manufacturing processes and industrial workspaces.

Paint booth exhaust ductwork removes paint fumes, overspray and vapors from paint booths.

Welding fume exhaust ductwork captures and removes welding fumes from work areas.

Parking ventilation ductwork removes vehicle exhaust gases and stale air from parking areas.

Fire rated exhaust ductwork is used where fire resistance, smoke control or kitchen exhaust safety requirements are important.

Commercial exhaust ductwork removes stale air, odor, smoke and unwanted heat from different areas of commercial buildings.

Office exhaust ductwork supports toilet exhaust, pantry exhaust, basement ventilation and general air removal.

Hotel exhaust ductwork is used for kitchens, bathrooms, laundry areas, basements, service rooms and restaurants.

Restaurant exhaust ductwork removes cooking smoke, heat, grease vapor and odor from kitchen areas.

Commercial kitchen exhaust ductwork connects kitchen hoods to exhaust fans and discharge points for proper kitchen ventilation.

Hospital exhaust ductwork supports ventilation for toilets, isolation rooms, operation theatres, laboratories and service areas.

Laboratory exhaust ductwork removes fumes, vapors and chemical contaminants from work areas.

Shopping malls use exhaust ductwork for toilets, food courts, kitchens, parking areas and service zones.

Car parking exhaust ductwork removes vehicle fumes and supports basement ventilation.

Factory exhaust ductwork removes hot air, fumes, dust and process contaminants from production areas.

Warehouse exhaust ductwork helps remove stale air, heat and dust from large storage spaces.

Manufacturing plants use industrial exhaust ductwork for fumes, dust, heat and ventilation requirements.

Paint booth exhaust ductwork removes paint fumes, overspray and vapors from the booth area.

Welding exhaust ductwork removes welding fumes and supports safer work conditions.

Cleanroom exhaust ductwork is used where controlled air removal is required.

Pharmaceutical exhaust ductwork supports controlled ventilation, fume removal and process air extraction.

Exhaust airflow requirement depends on room type, process, heat load, contamination level and ventilation purpose.

CFM calculation helps determine the amount of air that must be exhausted from each space.

Exhaust duct size is calculated based on airflow, velocity, pressure drop and system layout.

Air velocity affects exhaust performance, noise level, grease movement, dust collection and pressure drop.

Static pressure represents resistance to airflow in the exhaust ductwork system.

Pressure drop occurs due to duct length, bends, fittings, dampers, filters, hoods and grilles.

Exhaust fan capacity must match duct size, airflow requirement and static pressure.

The duct route should be planned to reduce unnecessary bends, long runs and airflow restrictions.

Too many bends and transitions can increase pressure drop and reduce exhaust performance.

Noise control can be managed through correct duct sizing, air velocity control, acoustic lining and vibration isolation.

Kitchen exhaust ductwork, smoke exhaust ductwork and fire rated exhaust ductwork may require special fire safety planning.

Access doors should be planned for cleaning, inspection and maintenance, especially in kitchen exhaust and industrial exhaust systems.

The exhaust discharge location should be planned to avoid re-entry of contaminated air into the building.

Make-up air is important when exhaust airflow is high, especially in commercial kitchens, laboratories and industrial spaces.

Fume extraction ductwork captures fumes from chemical processes, welding, laboratories and industrial workstations.

Dust collection exhaust ductwork removes dust generated from cutting, grinding, manufacturing and production processes.

Welding exhaust ductwork captures welding fumes and removes them from the work area.

Paint booth exhaust ductwork removes paint fumes and overspray from painting areas.

Chemical exhaust ductwork removes chemical vapors and gases from laboratories and industrial processes.

Local exhaust ventilation ductwork captures contaminants close to the source before they spread into the workspace.

Industrial exhaust fan connection must be designed for the required airflow, static pressure and duct layout.

Industrial exhaust ductwork supports better workplace air quality by removing harmful fumes, dust and vapors.

Our team checks the exhaust source, duct route, fan location, discharge point, site access and safety requirements.

HVAC drawings are reviewed to confirm duct size, duct material, route, fan connection, hood location, damper placement and discharge point.

Duct routes are measured and marked on site before fabrication and installation.

Exhaust duct fabrication includes cutting, bending, forming and assembling duct sections as per project requirements.

Duct supports and hangers are installed to hold the exhaust duct safely and correctly.

Fabricated duct sections are lifted, aligned and fixed in position as per layout.

Duct joints are sealed to reduce leakage and maintain exhaust performance.

Volume control dampers, backdraft dampers, fire dampers and smoke dampers are installed where required.

The exhaust fan or blower is connected to the ductwork with proper alignment and vibration control.

Exhaust hoods, grilles or intake points are connected to the duct system.

Access doors are installed for cleaning, inspection and maintenance.

Insulation, fire wrap or fire-rated duct treatment is provided where required by application and project specification.

Testing and commissioning confirm airflow, fan performance, leakage control, damper operation, noise level and exhaust discharge.

Visual inspection checks duct alignment, supports, joints, access doors, dampers, fan connections and discharge points.

Duct leakage testing checks whether exhaust air is escaping from duct joints or seams.

Airflow measurement confirms actual exhaust air quantity at grilles, hoods and duct branches.

Static pressure testing checks resistance inside the duct system and confirms fan performance requirements.

Fan performance testing checks exhaust fan airflow, motor operation, vibration and discharge performance.

Dampers are adjusted to control and balance exhaust airflow.

Air balancing ensures each exhaust point receives the required airflow.

Noise and vibration checking helps identify loose supports, fan issues, high velocity or poor alignment.

Smoke testing or functional testing helps confirm proper air movement and exhaust direction.

A commissioning report records inspection findings, airflow readings, pressure values, balancing status and system performance.

Poor airflow may happen due to wrong duct sizing, blocked ducts, fan issues, dirty grilles or high static pressure.

Duct leakage reduces exhaust performance and can cause air loss or odor spread.

Grease buildup in kitchen exhaust ducts can reduce airflow and create cleaning and fire safety concerns.

Dust accumulation can block airflow and affect exhaust system performance.

Bad odor return may happen due to backdraft, poor discharge location, leakage or missing backdraft damper.

High static pressure can be caused by undersized ducts, long duct runs, too many bends, clogged filters or blocked discharge.

Noisy ductwork may be caused by high air velocity, vibration, loose supports or poor fan connection.

Damaged insulation can cause heat gain, condensation, noise issues or fire rating concerns.

Loose duct supports can cause vibration, sagging and duct damage.

Blocked exhaust grilles reduce airflow and ventilation performance.

Fan vibration may happen due to imbalance, loose mounting, worn bearings or poor alignment.

Incorrect duct sizing can cause poor airflow, noise, high static pressure and low exhaust performance.

Poor discharge location or blocked outlet can cause exhaust air to return into the building.

GI exhaust duct, stainless steel exhaust duct, MS exhaust duct, aluminium exhaust duct, PVC duct and flexible exhaust duct have different cost ranges.

Duct gauge or thickness affects strength, durability and cost.

Larger duct sizes require more material and may increase fabrication cost.

Total duct quantity depends on building size, duct route, number of exhaust points and system layout.

Kitchen exhaust ductwork may cost more than general exhaust ductwork because of grease, cleaning and safety requirements.

Fire rated exhaust ductwork, smoke exhaust ductwork and kitchen exhaust systems may require additional fire-rated treatment.

Backdraft dampers, volume control dampers, fire dampers, smoke dampers and access doors affect total cost.

Fan type, fan location, flexible connectors and vibration control can affect installation scope.

Complex duct shapes, bends, transitions, reducers and site restrictions can increase fabrication effort.

High ceiling work, rooftop ducting, shaft work, scaffolding and difficult access can affect installation cost.

Leakage testing, airflow testing, static pressure testing and air balancing can affect project cost.

Cleaning, grease removal, leakage repair, insulation repair and AMC requirements affect long-term cost.

Our team understands exhaust ductwork, ventilation ductwork, kitchen exhaust ductwork, industrial exhaust ductwork, smoke exhaust ductwork and air balancing.

We provide exhaust duct services for restaurants, hotels, hospitals, malls, factories, warehouses, laboratories, commercial kitchens and industrial facilities.

We focus on duct sizing, airflow, pressure drop, duct route, bends, dampers, access doors, discharge location and fan connection.

From design and fabrication to installation, cleaning, testing, repair, replacement and AMC, Zenvent Engineering provides complete support.

Our exhaust ductwork solutions are designed to remove unwanted air, improve ventilation, reduce odor, support safety and maintain long-term system performance.