23 reviews
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About this app

The HVAC Toolkit from Carmel Software is the essential app for anyone in the HVAC industry. It is a compilation of all of our individual Android applications that are currently available on the Android app store. If you purchased all of these apps separately, you would pay almost double what this HVAC Toolkit costs:

1. HVAC RefCharge
2. HVAC PT Chart
3. HVAC Duct Sizer
4. HVAC Quick Load
5. Psychrometrics
6. Steam Tables
7. Pipe Sizer - Liquid
8. Pipe Sizer - Steam
9. Pipe Sizer - Gas

The "HVAC RefCharge" app is an HVAC refrigerant charging calculator that allows HVAC technicians to perform superheat and subcool refrigerant charge calculations on-the-fly. This app includes pressure/temperature data for over 75 refrigerants.

The "HVAC PT Chart" is an electronic pressure-temperature calculator that allows HVAC technicians and contractors to quickly lookup the temperature and corresponding pressure for 75 common HVAC refrigerants.

The "HVAC Duct Sizer" module allows you to perform quick and simple duct sizing analysis. You can specify the total airflow in CFM (or L/s), the aspect ratio and one of either the velocity of air or the friction loss per 100 feet (30 meters). The results include both the exact and rounded height and width (or diameter) dimensions and the calculated velocity and friction loss. In addition, you can calculate for a range of duct sizes by specifying minimum and maximum friction loss and airflow values.

The "HVAC Quick Load" module allows you to quickly calculate total heating and cooling loads for a wide variety of building types.

The "Psychrometrics" module allows you to easily perform single-state HVAC psychrometric calculations for up to 23 different combinations of input parameters.

The "Steam Tables" module allows you to calculate the properties of saturated or superheated steam by specifying 2 input properties. This module is also part of the "Pipe Sizer - Steam" module discussed below.

The "Pipe Sizer - Liquid" module allows you to size a pipe run for many different types of liquids (or fluids), pipe material and fitting types.

The "Pipe Sizer - Steam" module allows you to size a steam pipe run, and it also includes a bonus steam table calculator.

The "Pipe Sizer - Gas" module includes both low and high pressure gas pipe sizing, and it allows you to quickly size a simple low (less than or equal to 1.5 psi) and high (greater than 1.5 psi) pressure gas piping system by inputting a number of piping and gas properties.

The "HVAC Toolkit" application includes all of the great features of the individual HVAC apps such as the use of slider controls that allow you to quickly increment or decrement the input values and immediately observe the calculated results. It also allows you to specify different types of liquids, gases, pipe material types, duct material types, fitting quantities, min and max ranges, and step values.

All values can be displayed in English (IP) and Metric (SI) units.

In addition, all of the modules include email capabilities allowing you to email inputs and results to yourself and others.

The "HVAC Toolkit" application was designed by Carmel Software Corporation, a leader in HVAC design software since 1995. In fact, Autodesk (the makers of AutoCAD) acquired our load calculation software and incorporated it into their leading 3D modeling software called Revit. In addition, Carmel developed the ASHRAE 62.1 ventilation and ASHRAE DFDB apps that are currently sold by ASHRAE, Inc.

We also offer all of the above modules as individual apps for the Android on the Google Android App store.
Updated on
May 1, 2012

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

20 reviews
Jayson Levine
December 21, 2020
Does what I need it to do. Can only access the Preferences menu on one of my two devices, though. Samsung Note8 shows three-dot menu icon next to navbar at bottom of screen (almost missed it). ASUS ZenFone V, however, lacks any access to Preferences, so quick load calc is stuck on barber shops/drug stores/etc. as a building type. Please make the menu button more accessible.
4 people found this review helpful
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Piotr Zelasko
February 24, 2022
Preference menu not accessible on Samsung Note 10+ running Android 12. Developer has not responded to question about this problem.
1 person found this review helpful
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Ken's Heating & Air Conditioning
April 24, 2023
No açess to preferences on android abandoned software
1 person found this review helpful
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