Air Curtain Sizing Calculator
Estimate early air curtain selection inputs from door size, mounting height, opening condition, and heating preference.
- Door width
- Door height
- Mounting height
- Opening type
Commercial Ventilation Equipment
Air curtains, ventilation fans, and fresh air systems.
MiWind supports contractors, distributors, and facility teams with air curtains, ventilation fans, fresh air systems, exhaust fans, dehumidifiers, sizing tools, and model document requests.
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 and project details.
Project Buyer Start project request Start with equipment family, application, quantity, size or CFM target, state, and timeline. Distributor / Dealer Start dealer inquiry Share territory, product focus, channel background, stocking scope, and recurring demand. 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
Air Curtains, Ventilation Fans, Fresh Air Systems, and Dehumidifiers
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 Sizing Tools
Airflow Calculators
Air curtain sizing, ventilation CFM, bathroom exhaust, dehumidifier, ACH, ERV/HRV, and duct pressure tools.
Ventilation CFM Calculator
Estimate planning-level CFM from area, ceiling height, and target air changes per hour.
- Area
- Ceiling height
- Target ACH
- Room type
Bathroom Exhaust Fan Sizing Calculator
Estimate bathroom exhaust airflow from room area, ceiling height, and moisture sensitivity.
- 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
Plan doorway airflow control for customer-facing entrances where comfort, insects, dust, traffic, and heating preference shape the air curtain review.
Retail Entrances guide
Space type Restaurant Ventilation
Plan practical ventilation reviews for dining rooms, restrooms, service corridors, and support areas.
Restaurant Ventilation guide
Space type Commercial Kitchens
Support kitchen-adjacent airflow reviews while keeping hood and code requirements separate.
Commercial Kitchens 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 review.
Air Curtains
ASHRAE 90.1 Vestibule Exception: Air Curtain Review Guide
Review ASHRAE 90.1 vestibule-exception questions for air curtains without turning code language into unsupported product claims. Read Air Curtains Air Curtains
How to Size a Commercial Air Curtain for a Retail Entrance
Size a commercial air curtain from door width, mounting height, exposure, heating need, controls, and field inputs before requesting model review. Read Air Curtains Cold Rooms