Air Curtain Sizing Calculator
Estimate air curtain size from door width, opening height, mounting height, opening type, heating preference, voltage, and model document request.
- Door width
- Door height
- Mounting height
- Opening type
Official MiWind English Site
Commercial Airflow Equipment
Use the official MiWind catalog, sizing tools, product families, and model documents from Foshan Mifeng Electrical Equipment Co., Ltd. for distributor, OEM, and project equipment inquiries.
Air curtain Start Here
Choose how to start
MiWind routes product, channel, OEM, and document requests by buyer role so the first note includes the right product, quantity, market, and document details.
Project Buyer Start project request Start with equipment family, application, quantity, size or CFM target, destination region, and timeline. Distributor / Dealer Start dealer inquiry Share territory, product focus, channel background, stocking scope, and recurring demand without assuming local stock. OEM / Private Label Start OEM inquiry Prepare product family, market, quantity range, branding scope, packaging, voltage, and document needs. Contractor / Installer Product documents Find sizing worksheets, model document requests, installation details, and product documents for field work.
Product Finder
Find the right MiWind product family
Choose the intent, application, and known inputs. The result stays at family level and adds the selected product details to the RFQ.
Equipment Portfolio
MiWind Product Range
A focused view of MiWind product families for commercial entrances, rooms, duct paths, exhaust points, fresh air, and moisture control.
Equipment Families
Commercial Air Curtains and Ventilation Products
Compare the main MiWind equipment families by application, field input, and next selection step.
Family Key project input Next step
Air Curtain Entrance air control Door width / mounting height Compare air curtain series Ventilation Fan Ducted airflow CFM / static pressure Review fan type and duct path Fresh Air System Fresh air and recovery Supply CFM / recovery type Define airflow and service access 
Exhaust Fan Room exhaust CFM / noise / duct route Review exhaust fan series 
Dehumidifier Moisture control Pints/day / moisture load Size the moisture load Official MiWind Documents
Catalog, model documents, and manufacturer profile
Start with the product catalog and company profile, then request current model documents after the product family, series, and project inputs are clear.
Product Catalog
Product Catalog
Official MiWind product catalog PDF for comparing equipment families, series names, model entries, and available parameters.
Model DocumentsModel Documents
Use the datasheet guide before requesting current model documents for a selected family or series.
Manufacturer ProfileManufacturer Profile
Foshan Mifeng Electrical Equipment Co., Ltd. identity, product focus, OEM, and distributor support.
Sizing Tools
Airflow Calculators
Air curtain sizing, ventilation CFM, bathroom exhaust, dehumidifier, ACH, ERV/HRV, and duct pressure tools.
Room Ventilation CFM Calculator
Estimate planning airflow for rooms, offices, classrooms, restaurant support spaces, storage rooms, and gyms from area, ceiling height, target ACH, room use, source condition, and duct path before product selection.
- Area
- Ceiling height
- Target ACH
- Room type
Bathroom Exhaust Fan Sizing Calculator
Estimate bathroom exhaust CFM from room area, ceiling height, moisture use, duct size, duct length, elbows, termination, and sone target before ceiling-mounted exhaust fan or inline duct fan selection.
- Bathroom area
- Ceiling height
- Moisture level
- Duct length
Fan Applications
Commercial Spaces
Retail entrances, kitchens, bathrooms, warehouses, gyms, offices, cafes, cold rooms, and storage spaces.
Space type Retail Entrances
Storefront air curtain sizing for retail entrances where door width, mounting height, traffic, exterior exposure, heating preference, voltage, controls, and photos shape the air curtain selection.
Retail Entrances guide
Space type Restaurant Ventilation Systems
Plan restaurant ventilation by room: dining fresh air, restroom exhaust, service corridor airflow, storage conditions, entrance airflow, and kitchen-adjacent pressure symptoms.
Restaurant Ventilation Systems guide
Space type Kitchen Ventilation and ERV Planning
Support kitchen-adjacent airflow, ERV planning, food service air curtain selection, and support-room fan requests while keeping hood and code requirements separate.
Kitchen Ventilation and ERV Planning guide
Space type Cold Room Doors
Plan air curtain reviews for walk-in cooler, cold-room, and temperature-separated openings.
Cold Room Doors guideSelection Articles
Air Curtain and Ventilation Articles
Short technical articles for doorway sizing, cold-room separation, heated air curtains, exhaust fan sound, dehumidifier sizing, and ERV selection.
Cold Rooms
Air Curtain vs Strip Curtain
Compare cold-room air curtains and strip curtains by traffic, frost risk, hygiene, visibility, maintenance, temperature difference, and project inputs. Read Cold Rooms Gym Ventilation
Gym Moisture Diagnosis
Diagnose a gym moisture problem by comparing RH, recovery time, damp zones, airflow distribution, CFM, ACH, dehumidifier placement, fresh air, and RFQ inputs. Read Gym Ventilation Air Curtains