# AirChangeRateCalc

> AirChangeRateCalc (iPhone/iPad app by Dawn Paxton.)

- Source: https://appshunter.io/ios/app/airchangeratecalc/id6680197388 (this page in markdown: same URL + `.md`)
- Developer: [Dawn Paxton](https://appshunter.io/developer/1768293653)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 9 MB
- Languages: English
- Released: 2024-09-13
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/airchangeratecalc/id6680197388/reviews.md

## What is AirChangeRateCalc?

AirChangeRateCalc is a tool designed for calculating the Air Change Rate (ACH) in a room, which is a measure of how often the air in a space is replaced within an hour. This app helps users determine the required airflow to maintain indoor air quality.

Key Features:
- Room dimensions input: Users can specify the floor length, width, and ceiling height.
- ACH calculation: The app calculates the Air Change Rate based on the input dimensions.
- Required airflow output: Provides the necessary airflow in CFM to achieve the desired ACH.

Benefits:
- Streamlines the process of calculating ACH, saving time and effort.
- Ensures accurate ventilation requirements for various spaces.
- Offers a user-friendly interface for ease of use.

Target Audience:
- Professionals in building design and construction.
- Air quality management specialists.
- Individuals responsible for health and safety compliance in indoor environments.

AirChangeRateCalc is the practical tool for anyone needing to calculate and control the ventilation efficiency of a room. Download AirChangeRateCalc to enhance your ability to manage indoor air quality effectively.


## Version history (last 2 releases)

### 2.0 — 2024-09-27

Fixed some occasional crashes in user feedback, improving the overall quality.

### 1.0 — 2024-09-13

No release notes.

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*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 2026-05-19.*