# HVAC Residential Load Calcs HD — Cooling and heating load calcs

> Residential HVAC heating and cooling load calculation tool for field use. (iPhone/iPad app by Carmel Software Corporation.)

- Source: https://appshunter.io/ios/app/hvac-residential-load-calcs-hd/id449945304 (this page in markdown: same URL + `.md`)
- Developer: [Carmel Software Corporation](https://appshunter.io/developer/317970398)
- Category: Business, Productivity
- Price: $49.99
- Rating: 3.00/5 from 1 App Store ratings · 11 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 16 MB
- Languages: American English
- Released: 2011-07-28
- Data updated: 2026-06-01
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/hvac-residential-load-calcs-hd/id449945304/reviews.md

## What is HVAC Residential Load Calcs HD?

(For full online help and a training video, click http://bit.ly/1aifR6n

For a schedule of our live training webinars, click http://bit.ly/1IHn7nA)

Bonus: This app now includes our popular HVAC Equipment Locator app built right in! Click here for details about that app:  http://bit.ly/1a2RskH

This app allows you to perform detailed block and room-by-room heating and cooling loads for residential buildings out in the field, by taking advantage of the simplicity, power, and screen-size of the iPad.

This app was designed by Carmel Software Corporation, a 25-year old software design firm specializing in engineering analysis software applications. We are not just 1 person designing mobile apps out of a bedroom. We are a team of software developers with over 50 years combined software and engineering design experience. In fact, our software powers the analysis capabilities of major Autodesk software tools such as Revit (The makers of AutoCAD). Also, we provide full support including phone, email, and periodic live webinars.

The following is just a small sample of the features included in this app:

1. Calculations based upon ACCA Manual J8 Abridged calculations
2. Includes a 1000+ world-wide city weather database
3. Includes data for 100s of construction types for walls, roofs, floors, doors, windows, skylights, ceilings, and more
4. Allows you to create and store an unlimited number of projects. 
5. Allows you to specify an unlimited # of envelope types (ie – doors, walls, roofs, floors, ceilings), window types, and skylight types for each building
6. Allows you to model individual rooms so you can view room loads and airflows
7. Allows you to instantly view total heating and cooling load results as you update input data
8. Allows you to view comprehensive cooling and heating load breakdown reports including breakdown by opaque load, window load, skylight load, infiltration load, ventilation load and internal load contributions
9. Envelope inputs include envelope type, envelope construction number, dimensions, and opening areas
10. Window inputs include window type, internal and external shading type, overhang dimensions, window area, and more..
11. Additional input types include # of people, # of bedrooms, ventilation airflow, and more..
12. Includes ability to display a wide variety of on-screen reports including checksum reports (ie – BTUh/SqFt, SqFt/Ton, etc.), complete heating and cooling load breakdown reports, and even graphically-pleasing pie charts showing cooling and heating load breakdowns. You can also email these reports as PDFs to yourself or clients.
13. Includes the ability to display a comprehensive HTML report that you can email to yourself or others, and it also includes a spreadsheet attachment that you can open in Excel to further massage data on your desktop
14. Includes ability to input your company information to display on the emailed report
15. Includes ability to display units in either English (IP) or Metric (SI).
16. Includes ability to perform room-by-room load calcs
17. This is the same technology that powers the Trane MAP iPad app that they offer to their elite dealer network. 
18. Now includes the HVAC Equipment Locator app built right in.

The benefits of using this app are numerous including:

1. Great for use out in the field. Quickly size heating and cooling equipment, show the client, then email the results back to your office for further analysis.
2. Show off your advanced on-screen reports to clients convincing them you are using cutting-edge technology
3. Save time by inputting information in the field and then returning to your office to perform more in-depth analysis

Please email us at info@carmelsoft.com for any comments and suggestions for improvements.

## Key features

- ACCA Manual J8 Abridged calculations
- 1000+ city weather database
- Extensive construction type data
- Unlimited project and envelope storage
- Room-by-room load modeling
- Instant load result updates
- Comprehensive report generation (PDF, HTML, Excel)

## Recent user reviews (10 of 11)

All indexed reviews: https://appshunter.io/ios/app/hvac-residential-load-calcs-hd/id449945304/reviews.md

### 3/5 — Overall a nice idea but the implementation is a bit careless

*2024-07-12*

Although skylights apparently contribute to the total heating and cooling loads, they are listed as contributing zero in HTML summary and skylights tab. Also, the screen for saving the summary appears and disappears before the user can pick which folder to save it in. Data entry is a bit closer cumbersome because even after entering a value, it might disappear if one neglects to hit tab or return. Little things like that make the app seem less polished than it could be.

### 1/5 — Program will not load screens

*2021-03-22*

I get nothing but the demo screen. No way to enter new loads.

### 1/5 — Waste

*2015-01-18*

Was not worth the 50 bucks. Don't waste your money!!!!

### 3/5 — Pretty decent app

*2014-02-28*

Fairly simple to use especially on site. I've had numerous load programs and this does work properly. My only reason for three stars is there is no specific construction data for foam insulation. Most popular load programs have specifics for this. I have called and talked to these guys and they say just choose the R value. Well that's what the program is supposed to do after you choose thickness and poundage of the foam being used as well as closed cell or open cell. I certainly wouldn't pay more than 50 bucks for this program. Just saying.

### 2/5 — Overpriced

*2012-09-14*

This app puts a lot of emphasis on some less-than-essential data and graphs that, while visually appealing, provide mostly irrelevant information.

The interface is attractive, but data entry is TEDIOUS and yields fewer results than you'd expect from a $35 app ($50 if you bought it when I did) into which you've just spent 25 minutes scrolling, tapping, sliding, and typing.

If you're only interest is impressing customers with your tech toys, go for it.

### 3/5 — Good app

*2012-04-11*

The app itself works very well, main problem that I have had is that local permitting will not except heat loads from this program because it doesn't say on the reports that it was designed using the manual J 7 or 8 edition.  It is only a one or two line and I would even write it out for you "This HVAC load calculation has been performed using sound engineering principles as prescribed by Manual J seventh and eighth abridged editions and ASHRAE fundamental. Provided by Camel Software Corporation."
Please have on all reports that will make life easy for all of us.

### 1/5 — Waste of time and money

*2012-03-31*

DONT BUY!  Very difficult to navigate and loads are not accurate.

### 5/5 — Very useful and easy to use

*2012-03-14*

I downloaded this app when my Trane rep. recommended it. I also attended one of the weekly training webinars, and started using it out in the field soon after.

It really has proven to be a timesaver for doing residential equipment sizing, and it really impressed my customers when I was able to do the loads in front of them and then email them a quick report.

I love that is is so easy to use and I can email an Excel spreadsheet with all the results back to the office.

I hear that the app is also used to power the load calc capabilities of the latest Trane MAP application that is available to their resellers. 

Great work!!

### 5/5 — A game changer

*2011-10-14*

I'm a Trane reseller and this app was recommended to us. I have not been disappointed so far. Before this app, I usually wrote information about the house into my paper-notebook, then went back to the office to enter the information into my desktop-based software. Now, with this app, I can enter all the information into my iPad, then email it back to my office for further analysis. This has really revolutionized the way I do loads. Also, my residential clients are quite impressed with the reporting and the fact I am using the iPad for determining the size of equipment. I highly recommend this app!

### 5/5 — Incredibly useful

*2011-10-14*

I use this app daily out in the field. I don't know what I did without it. My customers are so impressed that I am able to do a cooling load then show them the reports on the screen and then email. It's really helped me secure more business.

## Frequently asked questions about HVAC Residential Load Calcs HD

### What is HVAC Residential Load Calcs HD?

HVAC Residential Load Calcs HD is a paid application designed for iPads that allows users to perform detailed block and room-by-room heating and cooling load calculations for residential buildings in the field. It utilizes ACCA Manual J8 Abridged calculations and includes a vast database of weather and construction types.

### What are the calculation standards used by HVAC Residential Load Calcs HD?

The app's calculations are based on ACCA Manual J8 Abridged standards, a widely recognized methodology for residential load calculations. This ensures accuracy and compliance with industry best practices for HVAC design.

### Can I store and manage multiple projects with HVAC Residential Load Calcs HD?

Yes, HVAC Residential Load Calcs HD allows you to create and store an unlimited number of projects. You can also specify an unlimited number of envelope types, window types, and skylight types for each building within your projects.

### What types of reports can HVAC Residential Load Calcs HD generate?

The app can generate a wide variety of on-screen reports, including checksum reports, comprehensive heating and cooling load breakdown reports, and pie charts. These reports can be emailed as PDFs or as an HTML report with a spreadsheet attachment for further data manipulation in Excel.

### Does HVAC Residential Load Calcs HD support different units of measurement?

Yes, the app includes the ability to display units in either English (IP) or Metric (SI), catering to different regional preferences and project requirements.

### What is the update frequency for HVAC Residential Load Calcs HD?

The app was last updated on March 27, 2026, indicating a recent update. The developer, Carmel Software Corporation, has a history of providing support and periodic live webinars, suggesting ongoing maintenance and potential future updates.

### What is the price of HVAC Residential Load Calcs HD?

HVAC Residential Load Calcs HD is a paid application priced at $49.99. This one-time purchase provides access to all its features for performing detailed HVAC load calculations.

### Is HVAC Residential Load Calcs HD available on Android devices?

Based on the provided data, HVAC Residential Load Calcs HD is specifically designed for iPads. It is not listed as being supported on Android devices.

## Version history (last 5 releases)

### 4.90 — 2026-03-27

1. Optimized for iOS 26.x
2. Updated help

### 4.85 — 2026-02-04

1. Added a Share button to the iPhone and iPad versions of the app, so you can now text, email, and download reports.
2. Updated help.
3. Optimized for iOS 26.

### 4.6 — 2025-03-27

1. Updated for iOS 18
2. Added "Share" icon that allows you to print, email, and text reports
3. Updated help.

### 4.1 — 2023-03-20

1. Optimized for iOS 16
2. Updated help

### 4.0 — 2021-10-27

1. Optimized for iOS 14 and latest iPad screen resolutions

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All apps by Carmel Software Corporation: https://appshunter.io/developer/317970398

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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 2026-06-01.*