Opening and Airflow
Doorway sizing, room CFM, exhaust paths, and ducted fan selection.
Resources
Commercial Airflow Guides
Guides for air curtain sizing, ventilation CFM, ERV/HRV selection, exhaust fan sound, dehumidifier sizing, duct fans, and US rating terminology.
Guide Routes
Project Condition Guides
Choose by doorway, room airflow, recovery, moisture, sound, duct pressure, or rating terminology.
Comfort and Moisture
Recovery selection, humidity load, sound details, and comfort limits.
Terms and Ratings
Air-movement vocabulary and cautious US rating terminology.
Technical Guides
Equipment Selection Guides
Doorway sizing, room airflow, recovery selection, sound details, moisture control, duct fan selection, terminology, and US rating language.
chart Air Curtain Size Chart
Air curtain size chart for commercial door width, air curtain sizes, air curtain dimensions, 600 mm to 2000 mm model lengths, about 24 in to 79 in source-backed width classes, clear height, mounting height, recessed or ceiling-mounted clearance, restaurant door traffic, cold-room door duty, heat preference, voltage, controls, photos, and current model data.
Guide
chart Ventilation CFM Chart
Compare planning CFM by room volume, ACH, source condition, duct path, sound target, and equipment family before choosing fresh-air, exhaust, inline fan, or dehumidifier review.
Guide
guide ERV vs HRV Guide
Compare ERV and HRV fresh-air review by climate, humidity goal, outdoor-air CFM, heat recovery ventilator sizing inputs, filters, controls, duct route, service clearance, and current model documents.
Guide
explainer Exhaust Fan Sone Ratings
Understand exhaust fan sones, bathroom fan noise, sone vs dBA, CFM, duct path, mounting, controls, and model data before treating a sound number as a product promise.
Guide
chart Dehumidifier Size Chart
Commercial dehumidifier sizing chart for area, current RH, target RH, temperature, drainage, duty cycle, basement moisture, cold-room moisture, ventilation overlap, and service access.
Guide
guide Duct Fan Selection Guide
Duct fan, inline duct fan, EC inline fan, mixed-flow duct fan, centrifugal duct fan, cabinet fan, inline cabinet fan, duct booster fan, and centrifugal ventilation fan selection logic for CFM, resistance path, filters, grilles, sound, controls, access, and fan-curve review.
Guide
explainer Certification Terms Guide
AMCA HVI ENERGY STAR certification terminology guide and AMCA HVI ENERGY STAR model document request guide for AMCA, ANSI/AMCA 220, ASHRAE 90.1 vestibule language, HVI, ENERGY STAR, NRTL, UL, ETL, buyer documents, and document requests.
Guide
glossary Airflow Glossary
Working definitions for CFM, ACH, static pressure, sones, ERV, HRV, pints/day, ratings, and support terms.
GuideArticles
Articles by equipment type
Articles grouped by the product questions that usually appear during early equipment selection.
Air Curtain Articles
3 articlesDoorway sizing, heated entrance selection, cold-room traffic, fan type, and energy-loss questions.
Ventilation Fan Articles
3 articlesCFM, ACH, duct pressure, bathroom exhaust, EC inline fan selection, and distributor request inputs.
Fresh Air and ERV Articles
3 articlesOffice, classroom, restaurant, gym, and small commercial fresh-air planning before equipment selection.
Moisture Control Articles
3 articlesDehumidifier sizing, basement ventilation, storage-room dampness, gym moisture, and recovery behavior.