Air Curtain Sizing Calculator
CalculatorEstimate 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
Airflow calculators
Tools
Estimate room airflow, size an air curtain, or prepare equipment requirements with dimensions and conditions from your project.
Calculators
Choose the equipment or measurement you need.
Calculate room CFM, convert CFM to ACH, record air curtain dimensions, or estimate requirements for exhaust fans, dehumidifiers, ERV/HRV, and ducted fans.
Room Ventilation CFM Calculator
CalculatorEstimate 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
CalculatorEstimate 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
Commercial Dehumidifier Sizing Calculator
CalculatorEstimate a commercial dehumidifier capacity class from area and dampness, then carry current RH, target RH, temperature, drainage, duty cycle, and moisture source into model selection for basements, storage rooms, cold rooms, gyms, and moisture-sensitive spaces.
- Area
- Dampness level
- Temperature
- Usage type
CFM to ACH Calculator
CalculatorConvert airflow and room volume into estimated air changes per hour for early ventilation planning and how to calculate ach questions.
- CFM
- Area
- Ceiling height
Heat Recovery Ventilator Sizing Worksheet
WorksheetERV/HRV worksheet keeps project details together: climate, humidity goal, outdoor-air CFM, occupancy, duct route, filtration, service access, controls, and model-document needs.
- Climate
- Humidity goal
- Occupancy
- Room type
General Ventilation Project Worksheet
WorksheetCollect room, airflow, duct, electrical, control, sound, drainage, service, photo, and document notes in one reusable project brief before requesting equipment information.
- Project and room
- Area and height
- CFM target
- Duct path
Duct Fan Static Pressure Calculator
EstimatorEstimate duct fan pressure inputs for inline, cabinet, and utility fan selection using target CFM, duct size, length, elbows, filters, termination, sound target, and service access.
- Target CFM
- Duct size
- Duct length
- Elbows
Air Curtain Project Worksheet
WorksheetCollect doorway, installation, electrical, controls, service, commercial, photo, and document details, then copy or download a project brief without calculating a result.
- Project and opening
- Door width and height
- Mounting and clearance
- Traffic and exposure
Calculator selection
Find a calculator and guide for a specific equipment question.
Compare calculators by task
| Equipment question | What to measure | Calculator | Guide or product |
|---|---|---|---|
| Ventilation calculator, CFM calculator, or fan size calculator | Use room area, ceiling height, target ACH, room use, source condition, and duct path before choosing fresh-air, exhaust, or duct fan equipment. | Ventilation CFM Calculator | Ventilation CFM Chart |
| Bathroom fan calculator or bathroom exhaust fan CFM calculator | Use bathroom area, ceiling height, duct length, elbows, termination, moisture level, and sone target before exhaust fan selection. | Bathroom Fan CFM Calculator | Bathroom Ventilation |
| Dehumidifier sizing calculator or commercial dehumidifier sizing | Use area, current RH, target RH, temperature, moisture source, drainage, duty cycle, and service clearance before dehumidifier model selection. | Commercial Dehumidifier Sizing Calculator | Dehumidifier Size Chart |
| Air curtain sizing calculator | Use finished door width, clear opening height, mounting height, traffic, voltage, and heated preference before comparing air curtain sizes. | Air Curtain Sizing Calculator | Air Curtain Size Chart |
| CFM to ACH calculator | Use known airflow, room area, and ceiling height when the task is converting a CFM value into air changes per hour. | CFM to ACH Calculator | Ventilation CFM Chart |
| Duct fan static pressure calculator | Use target CFM, duct size, length, elbows, filters, grilles, termination, sound target, and service access before checking fan-curve data. | Duct Fan Static Pressure Calculator | Duct Fan Selection Guide |
| Heat recovery ventilator sizing / ERV HRV worksheet | Use outdoor-air CFM, climate, humidity goal, occupancy, duct route, filter access, and service clearance before fresh-air system selection. | Heat Recovery Ventilator Sizing Worksheet | ERV vs HRV Guide |
| General ventilation project worksheet | Collect room, airflow, duct, electrical, controls, sound, drainage, service, photo, and document notes without calculating a result. | General Ventilation Project Worksheet | Equipment Selection Matrix |
| Air curtain project worksheet or site survey template | Collect door width, clear height, mounting height, installation, traffic, exposure, heating, voltage, controls, service, photos, quantity, and document needs without calculating a result. | Air Curtain Project Worksheet | Air Curtain Specification Reference |
| Ceiling mounted air curtain selection | Use ceiling opening, recess depth, finished width, mounting height, service access, controls, voltage, and photos. | Air Curtain Sizing Calculator | Ceiling Mounted Air Curtain |
| Restaurant ventilation CFM | Use dining room, restroom, service corridor, storage, or kitchen-adjacent room volume, source condition, exhaust path, sound target, and duct route. | Ventilation CFM Calculator | Restaurant Ventilation Systems |
| Ceiling exhaust fan selection | Use room size, ceiling location, duct length, elbows, termination, sound target, controls, and service access. | Bathroom Fan CFM Calculator | Ceiling Mounted Exhaust Fans |
| Gym or fitness center moisture | Use peak occupancy, activity load, fresh-air target, humidity source, temperature, drainage, odor, filter path, and service access. | Commercial Dehumidifier Sizing Calculator | Fitness Center Ventilation |
| Office or classroom fresh air | Use room list, occupancy, area, ceiling height, fresh-air CFM or ACH target, filtration, sound target, duct route, and service access. | Ventilation CFM Calculator | Office Space Ventilation Fans |
| Bathroom fan calculator | Use bathroom area, ceiling height, duct length, elbows, termination, moisture level, and sone target. | Bathroom Fan CFM Calculator | Exhaust Fan Sone Ratings |
| ERV HRV ventilation | Use climate, humidity goal, room use, occupancy, filter expectation, duct access, and service clearance. | Heat Recovery Ventilator Sizing Worksheet | ERV vs HRV Guide |
| Inline cabinet fan pressure | Use target CFM, duct diameter, straight length, elbows, filters, grilles, termination, service access, and access-side constraints. | Duct Fan Static Pressure Calculator | Cabinet Centrifugal Fan |
Calculator results provide a starting estimate. Confirm the final equipment against current model data, installation conditions, and applicable code requirements.