# Plumbing, Airflow HVAC Calcs — Calculator:Homes,Plants,Water > Plumbing and HVAC calculator for airflow, conversions, and project reference. (iPhone/iPad app by Verosocial Studio.) - Source: https://appshunter.io/ios/app/plumbing-airflow-hvac-calcs/id426922381 (this page in markdown: same URL + `.md`) - Developer: [Verosocial Studio](https://appshunter.io/developer/354566841) - Category: Reference, Education - Price: $0.99 - Rating: 5.00/5 from 2 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 4 MB - Languages: American English - Released: 2011-03-24 - Data updated: 2026-07-04 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/plumbing-airflow-hvac-calcs/id426922381/reviews.md ## What is Plumbing, Airflow HVAC Calcs? The app is a no nonsense utility for Plumbers and people who want to calculate Airflow as well as basic HVAC calculations is good for reference, educational, and small projects. Calculators 1. Virtual Airflow (US Units) 2. Virtual Airflow (Metric Units) 3. Reynolds Number for Metric 4. Reynolds Numberfor US / Imperial 5. Weights (Ounces, Grams, Pounds, Tons US, Kilograms, Tons UK, and Tonnes The Virtual Airflow & Reynolds Number calculators are designed to give related and relevant information about the amount of air in a defined area, and the size air handler or fan required to move it in a given amount of time. The air movement can be from a heater, AC unit, chiller, refrigeration unit, closed fan unit or cooler (swamp cooler or evaporative cooler) into the area, or from an exhaust fan moving the air out of the area. For the distance calculators enter the area dimensions in feet or meters. Accuracy to the inch or centimeter is not needed. Enter the number of times per hour that you would like total change of the air mass volume in that area. Enter the air flow specification of the air handler (fan) you anticipate using in cubic feet per minute (CFM) or cubic meters per minute. Click on Calculate and the results will be the (air) volume of the area, the amount of time for each volume of air mass change, the total volume of air requiring movement with an hour, the volume air flow of the suggested fan (based on your entries) and the number of fans or air handlers needed if they are of the target size you selected. A guideline for clear air (especially if filtered) in an area is 4 to 8 complete cycles every hour. Area Converters • Square Inches and Shorter Conversion • Square Feet & Yards & Meters Conversion Distance Converters • Inches & Centimeters & Millimeters Conversion • Feet & Yards & Meters Conversion • Miles & Kilometers Conversion Volume Converters • US/Imperial to Metric Units Conversion • Metric to US/Imperial Units Conversion • Inches & Centimeters Volume Conversion • Feet, Yards, & Meters Volume Conversion All results can also be emailed through the iphone’s email application using an automatically filled-in email template provided with the app. This app features: • Send your calculations or conversion by email • Universal App (iPhone, iPod Touch, and iPad) • Retina Display graphics • Fast app switching • Automatically Saves Your Inputs No network connectivity required. Note: All information in this app is for informational purposes only. Note: Should not be considered for open fan blade fans in ceilings higher than 12 feet or with fan’s rated or measured in capacity for a room size in square feet rather than cubic feet. ## Key features - Virtual Airflow Calculator (US & Metric) - Reynolds Number Calculator - Weight Converters - Area, Distance, and Volume Converters - Email Calculation Results - Offline Functionality ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/plumbing-airflow-hvac-calcs/id426922381/reviews.md ### 5/5 — Old man *2019-02-04* Very Handy App. Thanks for the update!!!! ### 5/5 — Airflow Calcs *2011-10-06* For me...great product. Needed cubic metres per minute to litres per second & the developer was only too happy to oblige. You can't ask for more.... ## Frequently asked questions about Plumbing, Airflow HVAC Calcs ### What are the primary functions of Plumbing, Airflow HVAC Calcs? Plumbing, Airflow HVAC Calcs offers calculators for virtual airflow, Reynolds number, weights, and various area, distance, and volume conversions. It's useful for reference, educational purposes, and small projects in plumbing and HVAC. ### Does Plumbing, Airflow HVAC Calcs require an internet connection? No, Plumbing, Airflow HVAC Calcs does not require network connectivity. All features and calculations can be performed offline, making it convenient for use in any location. ### Can I share my calculations from Plumbing, Airflow HVAC Calcs? Yes, you can email your calculations or conversion results directly through the iPhone's email application. The app provides an automatically filled-in email template for ease of use. ### What devices is Plumbing, Airflow HVAC Calcs compatible with? Plumbing, Airflow HVAC Calcs is a Universal App, meaning it is compatible with iPhone, iPod Touch, and iPad devices. It also features Retina Display graphics for enhanced visuals. ### How often is Plumbing, Airflow HVAC Calcs updated? The app was last updated on May 8, 2022, to version 8.4. While specific update frequency isn't detailed, this indicates ongoing maintenance and improvements. ### What is the price of Plumbing, Airflow HVAC Calcs? Plumbing, Airflow HVAC Calcs is a paid application, priced at $0.99. This one-time purchase grants access to all its features. ### What is the age rating for Plumbing, Airflow HVAC Calcs? Plumbing, Airflow HVAC Calcs has an age rating of 4+. This suggests it is suitable for a wide range of users, including younger individuals interested in technical calculations. ### Does Plumbing, Airflow HVAC Calcs have ads? No, Plumbing, Airflow HVAC Calcs does not contain advertisements. As a paid application, it offers an ad-free experience for its users. ## Version history (last 5 releases) ### 8.4 — 2022-05-08 updates for latest iOS ### 8.3 — 2019-02-04 Bug Fixes ### 8.2 — 2014-09-15 Bug Fixes ### 8.1 — 2014-01-12 Bug Fixes Smaller App Size & Download Size ### 8.0 — 2013-10-10 Updated interface to be easier to read for iOS 7 Bug Fixes ## Apps similar to Plumbing, Airflow HVAC Calcs | App | Rating | Price | Category | | --- | --- | --- | --- | | [Engineering Cookbook](https://appshunter.io/ios/app/engineering-cookbook/id376850735) | 4.5 (6) | Free | Reference | | [Gettysburg Concordance](https://appshunter.io/ios/app/gettysburg-concordance/id639327729) | 3.5 (4) | $9.99 | Reference | | [JEOL USA Periodic Table](https://appshunter.io/ios/app/jeol-usa-periodic-table/id1459184462) | 4.8 (4) | Free | Reference | | [Agora Notebooks](https://appshunter.io/ios/app/agora-notebooks/id1244689772) | 5.0 (5) | Free | Reference | | [HVAC Technician Exam Prep 2026](https://appshunter.io/ios/app/hvac-technician-exam-prep-2026/id1528925311) | 4.9 (180) | Free | Reference | | [Wakulla County Sheriffs Office](https://appshunter.io/ios/app/wakulla-county-sheriffs-office/id1580812785) | 4.8 (6) | Free | Reference | ## More apps by Verosocial Studio - [Heat Index & Category Calc](https://appshunter.io/ios/app/heat-index-and-category-calc/id370913314) - [Snow Day, Wind Chill & Speed](https://appshunter.io/ios/app/snow-day-wind-chill-and-speed/id372283970) - [LSI Calc DB Water Balance Log](https://appshunter.io/ios/app/lsi-calc-db-water-balance-log/id373769371) - [Roadtrip: Fuel & Trip Planner](https://appshunter.io/ios/app/roadtrip-fuel-and-trip-planner/id377000731) - [Torque Calculator, Units Conv](https://appshunter.io/ios/app/torque-calculator-units-conv/id379959718) - [Gas Oil Mixture Ratio](https://appshunter.io/ios/app/gas-oil-mixture-ratio/id380750809) All apps by Verosocial Studio: https://appshunter.io/developer/354566841 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-04.*