# HVAC Quick Load — Rule-of-thumb HVAC load calcs

> Rule-of-thumb HVAC heating and cooling load calculator for iPhone and iPad. (iPhone/iPad app by Carmel Software Corporation.)

- Source: https://appshunter.io/ios/app/hvac-quick-load/id365781247 (this page in markdown: same URL + `.md`)
- Developer: [Carmel Software Corporation](https://appshunter.io/developer/317970398)
- Category: Productivity, Utilities
- Price: $6.99 with in-app purchases
- Rating: 3.30/5 from 3 App Store ratings · 11 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 17 MB
- Languages: American English
- Released: 2010-04-14
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/hvac-quick-load/id365781247/reviews.md

## What is HVAC Quick Load?

The HVAC Quick Load is the one and only rule-of-thumb HVAC heating and cooling load application for the iPhone and iPad.

This app now includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539

This app performs rule-of-thumb HVAC cooling and heating load calculations for many types of commercial, industrial, institutional, and residential buildings. It allows you to quickly calculate the total required cooling and heating loads (in BTU/hr or Tonnage) and air flows (CFM or L/s) by inputting just the building type, total square area and number of people.

You can email all of the inputs and results to any email address. In addition, the email includes an Excel spreadsheet attachment from which you can perform more extensive calculations.

The basis of the calculations for this utility come from various authoritative HVAC texts that list average cooling and heating load values per square foot for many building types.

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

The following is a sample of some of the types of buildings that can be modeled:

1. Cocktail Lounges, Bars, Taverns, Clubhouses
2. Computer Rooms
3. Dining Halls, Lunch Rooms, Cafeterias, Luncheonettes
4. Hospital Patient Rooms, Nursing Home Patient Rooms
5. Jails
6. Kitchens
7. Libraries, Museums
8. Malls, Shopping Centers
9. Medical/Dental Centers, Clinics, and Offices
10. Nightclubs
11. Offices, Commercial
12. ..... and many more

This app is great for use out in the field to quickly analyze the cooling and heating properties of a building. However, please note, that it is by no means a substitute for rigorous heating and cooling load calculations, and HVAC equipment and materials should not be selected based upon the results from this application.

We also offer the following additional HVAC applications for the iPhone and iPad:

1. HVAC Duct Sizer
2. HVAC Pipe Sizer – Gas Low Pressure
3. HVAC Pipe Sizer - Gas High Pressure
4. HVAC Pipe Sizer – Liquid
5. HVAC Pipe Sizer – Steam
6. Steam Tables
7. Psychrometric Plus
8. Psychrometric LT
9. HVAC Pipe Sizer Plus
10. HVAC Pipe Sizer Gas Plus
11. HVAC Toolkit
12. HVAC Toolkit Ultimate
13. HVAC Residential Load Calcs
14. HVAC Load Plus
15. HVAC Equipment Locator
16. ASHRAE Duct Fitting Database
17. ASHRAE 62.1 Ventilation Load Calcs
18. HVAC Psych HD
19. HVAC ResLoad-J
20. HVAC Residential Load Calcs HD

## Key features

- Rule-of-thumb HVAC load calculations
- Supports commercial, industrial, and residential buildings
- Estimates cooling/heating loads and air flows
- Email results with Excel spreadsheet attachment
- IP and SI unit support
- HVAC Equipment Locator included

## Pricing and in-app purchases

Base price: $6.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| HVAC Equipment Locator | $9.99 | one-time |


## Recent user reviews (10 of 11)

All indexed reviews: https://appshunter.io/ios/app/hvac-quick-load/id365781247/reviews.md

### 1/5 — Meh

*2020-04-27*

Not worth it. Try something else.

### 1/5 — Not for residential

*2018-02-24*

App isn't for residental. 9 rooms for a 1500sqft home is ridiculous.

Please give me a refund

### 1/5 — Garbage

*2016-07-13*

Doesn't work as advertised. Calculations are wrong and the app is almost unusable.

### 5/5 — The name says it all

*2014-08-13*

This is a quick load calc app, not one to do those detailed loads required by the city. It’s perfect for those rule-of-thumb loads I need to do so often. It’s cheap, very easy to use, and most likely within 10 to 15% of doing a real load calc. I like it!

### 1/5 — Not for residential use

*2014-04-15*

This app has been a sad disappointment of what little it can do. I feel ripped off and want my money back!

### 1/5 — Owner

*2012-04-27*

Worthless app don't purchase. Info given is hardly a value of anything more then free.

### 4/5 — Great Ap but......

*2011-05-12*

Great Ap but would be even better if you could: 1. Save your own default settings instead of having to update each time etc... & 2. Be able to email results. ( like you can in your duct sizing Ap)

### 5/5 — Using it alot during this heat wave

*2010-08-05*

Our phones have been ringing off the hook because of the heat wave, so it's I've been putting this app to good use out in the field.

Customers like it since it shows that we are tech-savvy and I can tell them instantly what size their split system should be.

Nice little app.

### 1/5 — Not for homes

*2010-08-04*

I have used several programs in the past and I was not happy with this one. It is better to just guess then us this program.

### 5/5 — Exceeds my expectations

*2010-05-18*

At first I was skeptical about a load calc app on my iPhone, since it is often so complicated. However, this app is so easy to use and I compared it to more rigorous load calc apps, and amazingly it came within 10% of those calcs.

I like that it has so many different building types built into the database, too.

I look forward to seeing more complex apps in the future. Great work.

## Frequently asked questions about HVAC Quick Load

### What is HVAC Quick Load used for?

HVAC Quick Load is used to perform quick, rule-of-thumb HVAC heating and cooling load calculations for various building types. It helps estimate required loads and air flows based on building characteristics.

### What types of buildings can HVAC Quick Load model?

HVAC Quick Load can model a wide range of buildings including cocktail lounges, computer rooms, dining halls, hospitals, offices, and shopping centers. It covers commercial, industrial, institutional, and residential structures.

### Can I export my calculations from HVAC Quick Load?

Yes, you can email all inputs and results from HVAC Quick Load. The email includes an Excel spreadsheet attachment that allows for more extensive calculations.

### Does HVAC Quick Load support different units?

Yes, all values in HVAC Quick Load can be displayed in both English (IP) and Metric (SI) units, making it versatile for international use.

### Is HVAC Quick Load suitable for precise HVAC equipment selection?

No, HVAC Quick Load is intended for quick field analysis and is not a substitute for rigorous load calculations. Equipment should not be selected solely based on its results.

### What is the price of HVAC Quick Load?

HVAC Quick Load is a paid application priced at $6.99.

### How often is HVAC Quick Load updated?

The latest version of HVAC Quick Load is 5.4, and it was last updated on January 6, 2026. This indicates a commitment to ongoing development and maintenance.

### What devices is HVAC Quick Load compatible with?

HVAC Quick Load is compatible with iPhone, iPad, and iPod devices, making it accessible to a broad range of Apple users.

## Version history (last 5 releases)

### 5.4 — 2026-01-06

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.

### 5.2 — 2025-08-14

1. Added "Share" button to iPad version.

### 4.94 — 2024-12-11

1. Fixed bugs that occur on iOS 18.1
2. Updated help

### 4.8 — 2024-02-02

1. Optimized for iOS 17 and iPhone 15
2. Updated help

### 4.5 — 2023-02-27

1. Updated help
2. Optimized for latest iOS 16 and iPhone 14

## Apps similar to HVAC Quick Load

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [CoolCalc Scan](https://appshunter.io/ios/app/coolcalc-scan/id6738354891) | 2.0 (3) | Free | Productivity |
| [measureQuick HVAC](https://appshunter.io/ios/app/measurequick-hvac/id1273187731) | 5.0 (5) | Free | Productivity |
| [ASHRAE 365](https://appshunter.io/ios/app/ashrae-365/id1337759799) | 4.2 (10) | Free | Productivity |
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| [Ductulator - Duct Sizing](https://appshunter.io/ios/app/ductulator-duct-sizing/id1474939475) | 4.7 (317) | $3.99 | Productivity |
| [testo Smart](https://appshunter.io/ios/app/testo-smart/id1482139629) | 2.7 (165) | Free | Productivity |

## More apps by Carmel Software Corporation

- [HVAC Duct Sizer](https://appshunter.io/ios/app/hvac-duct-sizer/id317970395)
- [HVAC Pipe Sizer - Liquid](https://appshunter.io/ios/app/hvac-pipe-sizer-liquid/id325069065)
- [HVAC Pipe Sizer - Steam](https://appshunter.io/ios/app/hvac-pipe-sizer-steam/id336112747)
- [Steam Tables](https://appshunter.io/ios/app/steam-tables/id339948012)
- [HVAC Pipe Sizer - Gas Low](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-low/id341688321)
- [HVAC Pipe Sizer - Gas High](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-high/id341828523)

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

## Related topics

[hvac software](https://appshunter.io/ios/topics/hvac-software) · [hvac calculator load lite](https://appshunter.io/ios/topics/hvac-calculator-load-lite)

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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 2026-08-24.*