# SuperCool Slide Rule HVAC

> Utilities

Canonical page: [https://chrome-stats.com/d/id1193020259](https://chrome-stats.com/d/id1193020259)

## Overview

- **ID:** `id1193020259`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Designstein, llc
- **Category:** Utilities
- **Rating:** 4.20 / 5 (193 ratings)
- **Version:** 1.0
- **Last updated:** 2017-01-26
- **First published:** 2017-01-26
- **Size:** 38 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/supercool-slide-rule-hvac/id1193020259)
- **Website:** [http://www.supercoolsliderule.com](http://www.supercoolsliderule.com/)
- **Privacy policy:** [http://www.supercoolsliderule.com](http://www.supercoolsliderule.com/)

## Description

SuperCool HVAC Slide Rule is a comprehensive utility for HVAC technicians. It provides an interactive experience with on-screen guidance, solutions, and step-by-step procedures for repairs and diagnostics.

- Superheat & Subcooling charging for popular refrigerants with on-screen corrective actions
- Duct sizing & layout calculator for flex, round metal, rectangular and oval
- Compressor windings troubleshooter with acceptable resistance or unacceptable resistance
- Conversions for everything HVAC
- Capacitor series and parallel installation output values
- Airflow troubleshooting for heating & cooling with acceptable ranges and remedies if airflow is too high or too low
- Wet Bulb calculator
- Belt Sizing calculator
- And much, much more

## Rankings

- #109,701 — Overall

## Review summary

Users praise SuperCool Slide Rule HVAC as a powerful, time-saving HVAC reference with a broad toolset and a user-friendly interface that makes quick, accurate calculations and aids training. However, licensing headaches—trial expiries and reinstalls—along with unclear pricing, undermine the experience. The app also lags updates for newer refrigerants and occasionally suffers UI/chart issues. Overall, the tool is highly valued for fieldwork, but its ongoing licensing instability and outdated content limit its usefulness without fixes.

### Pros

- Comprehensive toolset for duct sizing, PT charts, superheat/subcooling and diagnostics.
- Quick, precise numbers in seconds with an easy-on-the-eyes UI.
- Excellent training aid and communication tool for managers and techs.
- Widely used in the field as a go-to HVAC reference.
- Positive impact on workflow, helping move to the next call quickly.

### Cons

- Licensing/trial instability requiring constant uninstall/reinstall due to perpetual free-trial prompts.
- Missing updates for newer refrigerants (R32, R454b) and an outdated refrigerant list.
- Pricing/purchase confusion and perceived paywalls; some users are prompted to buy or avoid the app.
- Occasional UI/chart bugs (e.g., superheat/subcooling charts scrambled) affecting usefulness.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1193020259)