# HVAC Load Plus vs HVAC Toolkit Lite

The clearest difference is price: HVAC Toolkit Lite at Free against HVAC Load Plus's $24.99. HVAC Toolkit Lite also leads on rating (5.0 vs 2.8) and in-app purchases (none vs 1). HVAC Load Plus's advantage is ratings volume (5 vs 1). On ads, device support and iOS requirement there is nothing between them.

HVAC Toolkit Lite is free to download; HVAC Load Plus costs $24.99 up front. HVAC Load Plus sells 1 one-off in-app purchase. HVAC Toolkit Lite asks for nothing beyond the download.

HVAC Toolkit Lite holds the better App Store score, 5.0 against 2.8. That said, the two scores are not equally well evidenced: HVAC Load Plus has 5 ratings behind it against 1, so its average is the more settled of the two.

HVAC Load Plus ships an update every 9 months, HVAC Toolkit Lite every 11 days. The most recent releases landed on October 15, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | HVAC Load Plus | HVAC Toolkit Lite |
| --- | --- | --- |
| Price | $24.99 | **Free** |
| Rating | [2.8 (5 ratings)](https://appshunter.io/ios/app/hvac-load-plus/id381608273/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hvac-toolkit-lite/id1628371325/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 11 days** |
| Monetization | Paid | **Free** |
| Size | 18 MB | 61 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Mohamad Jaber](https://appshunter.io/developer/1623246777) |

## What reviewers say

### HVAC Load Plus

[App page](https://appshunter.io/ios/app/hvac-load-plus/id381608273)

Perform detailed heating and cooling load calculations for buildings in the field using your iPhone. Access a vast weather database and construction data to generate comprehensive reports that can be emailed or exported to spreadsheets.

**Highlights:** Detailed heating and cooling load calculations, 1000+ city weather database, Extensive construction type data, Unlimited project creation and storage, Comprehensive load breakdown reports, Emailable HTML reports with spreadsheet attachments, Company information display on reports

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

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


### HVAC Toolkit Lite

[App page](https://appshunter.io/ios/app/hvac-toolkit-lite/id1628371325)

This tool assists HVAC engineers with design checks and quick calculations. It offers various tools for ducting friction loss, pipe sizing, ventilation, and heat load estimations, providing instructions and formulas for each calculation.

**Highlights:** Friction loss calculation, Pipe sizing, Ventilation calculations, Heat load estimation, Pump head calculation, Fan ESP calculation, Metric/Imperial units, English/Arabic language support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Load Plus free?

HVAC Load Plus costs $24.99, and also offers in-app purchases.

### Is HVAC Toolkit Lite free?

HVAC Toolkit Lite is free to download, with no in-app purchases.

### Which has better reviews, HVAC Load Plus or HVAC Toolkit Lite?

HVAC Toolkit Lite is rated higher. HVAC Load Plus averages 2.8 out of 5 from 5 ratings, while HVAC Toolkit Lite averages 5.0 from 1 ratings.

### Do HVAC Load Plus or HVAC Toolkit Lite have ads?

Neither HVAC Load Plus nor HVAC Toolkit Lite shows ads.

### Which is updated more often, HVAC Load Plus or HVAC Toolkit Lite?

HVAC Load Plus ships an update every 9 months, and HVAC Toolkit Lite every 11 days. Most recently, HVAC Load Plus was updated on October 15, 2026 and HVAC Toolkit Lite on September 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*