# HVAC Decoder vs HVAC Superheat & Subcooling

The clearest difference is price: HVAC Superheat & Subcooling at $2.99 against HVAC Decoder's $9.99. HVAC Superheat & Subcooling also leads on update cadence (every 2 months vs every 3 months). HVAC Decoder's advantage is iOS requirement (14.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

HVAC Decoder costs $9.99 and HVAC Superheat & Subcooling $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HVAC Decoder ships an update every 3 months, HVAC Superheat & Subcooling every 2 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | HVAC Decoder | HVAC Superheat & Subcooling |
| --- | --- | --- |
| Price | $9.99 | **$2.99** |
| Rating | **[4.0 (28 ratings)](https://appshunter.io/ios/app/hvac-decoder/id1355543096/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | 68.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 6 MB | 2 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Charles Cope](https://appshunter.io/developer/1355543095) | [光 杨](https://appshunter.io/developer/1891134953) |

## What reviewers say

### HVAC Decoder

[App page](https://appshunter.io/ios/app/hvac-decoder/id1355543096)

Decode HVAC model and serial numbers from major brands. This utility app provides thousands of model numbers and can email search results. It supports a wide range of HVAC equipment and offers close matches for unknown numbers.

**Highlights:** Decode HVAC model numbers, Decode HVAC serial numbers, Supports major HVAC brands, Thousands of model numbers, Email search results, Close match functionality, Report missing data

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

**In-app purchases:** none


### HVAC Superheat & Subcooling

[App page](https://appshunter.io/ios/app/hvac-superheat-and-subcooling/id6780412767)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Decoder free?

HVAC Decoder costs $9.99, with no in-app purchases.

### Is HVAC Superheat & Subcooling free?

HVAC Superheat & Subcooling costs $2.99, with no in-app purchases.

### Do HVAC Decoder or HVAC Superheat & Subcooling have ads?

Neither HVAC Decoder nor HVAC Superheat & Subcooling shows ads.

### Which is updated more often, HVAC Decoder or HVAC Superheat & Subcooling?

HVAC Decoder ships an update every 3 months, and HVAC Superheat & Subcooling every 2 months. Most recently, HVAC Decoder was updated on October 24, 2026 and HVAC Superheat & Subcooling on October 27, 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.*