# Johnstone Supply Toolkit

> HVAC mobile application for equipment tracking, PT charts, duct sizing, and store location. (iPhone/iPad app by Johnstone Supply, Inc..)

- Source: https://appshunter.io/ios/app/johnstone-supply-toolkit/id492852818 (this page in markdown: same URL + `.md`)
- Developer: [Johnstone Supply, Inc.](https://appshunter.io/developer/492852821)
- Category: Business, Productivity
- Price: Free
- Rating: 3.30/5 from 4 App Store ratings · 16 written reviews indexed
- Age rating: 4+
- Requires: iOS 7.0 · 34 MB
- Languages: English
- Released: 2012-01-12
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/johnstone-supply-toolkit/id492852818/reviews.md

## What is Johnstone Supply Toolkit?

The Johnstone Supply Toolkit is a free HVAC mobile application that includes the following functionality:

1. HVAC Equipment Locator: This module allows you to track, share, and customize your HVAC and related equipment nameplate and maintenance data. The version here includes the ability to customize your input screens. Click this link for more information: http://bit.ly/1a2RskH

2. HVAC PT Chart: This module is an electronic pressure-temperature (PT) look-up chart that allows you to specify the exact refrigerant temperature/pressure and view the corresponding pressure/temperature value. It also displays a complete list of pressure/temperature values in 1 degree increments for over 100 different refrigerants (including azeotropic refrigerants with both dew and bubble versions). You can adjust the elevation so proper gauge pressures are displayed. Additional functionality includes the ability to display specific refrigerant properties and email the entire PT chart list for a specific refrigerant.

3. HVAC Duct Sizer: This module allows you to quickly size one HVAC duct run or a range of duct sizes for a wide variety of duct materials and shapes.

4. Capillary Tube Calculator: This module allows you to perform capillary tube look-up based upon HP, condenser cooled type, and refrigerant type.

5. Store Locator: This module allows you to find the closest Johnstone Supply store to where you are currently located. You can also type in a zip code to find all Johnstone Supply stores within a specific radius.

6. AC/Gas Furnace Efficiency Savings Calculator: This module allows you to quickly calculate the energy savings for a new cooling or heating unit based upon selecting the old/new unit information and your region.

## Key features

- HVAC Equipment Locator
- Pressure-Temperature Chart
- Duct Sizer
- Capillary Tube Calculator
- Store Locator
- Efficiency Savings Calculator

## Recent user reviews (10 of 16)

All indexed reviews: https://appshunter.io/ios/app/johnstone-supply-toolkit/id492852818/reviews.md

### 1/5 — Not accurate

*2020-10-16, version 2.2*

This app does not work. It gives you different numbers every time.

### 5/5 — Update looks great

*2015-04-02, version 1.6*

I love this app since it includes so much free functionality include duct sizing, pt chart, and store locator. Great work.

### 1/5 — Not working

*2013-11-11, version 1.4*

Not working on iPhone 4S since iPhone update. Deleted it

### 3/5 — No Metric Ductsizing

*2013-08-20, version 1.4*

The duct section is useless for engineers who do work globally.

### 1/5 — Nh3

*2012-12-21, version 1.4*

Nh3 p/t not accurate and only goes to 13 hg

### 5/5 — To HVAC student

*2012-09-21, version 1.3*

No the chart is not wrong for R22

### 1/5 — HVAC Student

*2012-09-18, version 1.3*

Idk about the rest of the app but the pt chart is wrong for R-22

### 4/5 — What about heat pumps?

*2012-05-17, version 1.3*

Handy app but would be top notch if it had a heat pump savings calculator. How about a heat pump vs propane furnace cost of operation?

### 5/5 — Very Useful Tool

*2012-03-10, version 1.1*

This app is great and makes my job much easier. Only suggestion is to enlarge the user interface a bit. Everything seems kind of small. Keep up the great work Johnstone!

### 5/5 — All you need

*2012-02-24, version 1.1*

I love this app. Every thing you need is here. Now I don't have to call and ask Jeff for tech. help.

## Frequently asked questions about Johnstone Supply Toolkit

### What is the main purpose of Johnstone Supply Toolkit?

Johnstone Supply Toolkit is designed to assist HVAC professionals with various tasks. It includes features for tracking HVAC equipment, performing pressure-temperature calculations for refrigerants, sizing ductwork, and locating nearby Johnstone Supply stores.

### Does Johnstone Supply Toolkit offer a PT chart for refrigerants?

Yes, Johnstone Supply Toolkit features an electronic pressure-temperature (PT) look-up chart. It allows users to find corresponding pressure/temperature values for over 100 refrigerants and can display these values in 1-degree increments.

### Can Johnstone Supply Toolkit help with duct sizing?

Yes, the app includes a Duct Sizer module. This feature enables users to quickly determine the appropriate sizes for HVAC duct runs across various materials and shapes.

### How does the Store Locator feature in Johnstone Supply Toolkit work?

The Store Locator module in Johnstone Supply Toolkit helps you find the nearest Johnstone Supply store based on your current location. You can also search for stores within a specific radius by entering a zip code.

### What kind of savings can be calculated with Johnstone Supply Toolkit?

The AC/Gas Furnace Efficiency Savings Calculator allows users to estimate energy savings when upgrading to a new cooling or heating unit. It considers information about the old and new units, as well as the user's region.

### What devices is Johnstone Supply Toolkit compatible with?

Johnstone Supply Toolkit is available for iPhone, iPad, iPod, and Apple Watch devices, indicating broad compatibility within the Apple ecosystem.

### How often is Johnstone Supply Toolkit updated?

The latest version of Johnstone Supply Toolkit is 2.2, which was last updated on November 30, 2015. This suggests that updates may not be very frequent.

### What is the user rating for Johnstone Supply Toolkit?

Johnstone Supply Toolkit has a user rating of 3.3 stars based on 4 ratings. This indicates a mixed reception from its user base.

## Version history (last 1 release)

### 2.2 — 2015-11-30

This app has been updated by Apple to display the Apple Watch app icon.

1. Optimized user interface for iOS 9

2. Fixed issues in Duct Size and Equipment Locator due to iOS 9

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## More apps by Johnstone Supply, Inc.

- [Johnstone Supply HVACR](https://appshunter.io/ios/app/johnstone-supply-hvacr/id573732978)
- [Johnstone Supply HVACR](https://appshunter.io/ios/app/johnstone-supply-hvacr/id6654926877)

All apps by Johnstone Supply, Inc.: https://appshunter.io/developer/492852821

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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 2026-06-10.*