# HVAC Decoder vs EWC Controls, LLC

The clearest difference is price: EWC Controls, LLC at Free against HVAC Decoder's $9.99. EWC Controls, LLC also leads on rating (5.0 vs 4.0) and review sentiment (100% vs 69%). HVAC Decoder's advantage is ratings volume (28 vs 5) and iOS requirement (14.0 vs 16.4). On ads, in-app purchases and device support there is nothing between them.

EWC Controls, LLC is free to download; HVAC Decoder costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EWC Controls, LLC holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: HVAC Decoder has 28 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 69% of HVAC Decoder's written reviews are positive against 100% of EWC Controls, LLC's.

HVAC Decoder ships an update every 3 months, EWC Controls, LLC every 9 days. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | HVAC Decoder | EWC Controls, LLC |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.0 (28 ratings)](https://appshunter.io/ios/app/hvac-decoder/id1355543096/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ewc-controls-llc/id1456560692/reviews)** |
| Number of ratings | **28** | 5 |
| Positive reviews | 68.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Paid | **Free** |
| Size | 6 MB | 38 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Charles Cope](https://appshunter.io/developer/1355543095) | [EWC Controls, Inc.](https://appshunter.io/developer/1456560691) |

## 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


### EWC Controls, LLC

[App page](https://appshunter.io/ios/app/ewc-controls-llc/id1456560692)

This app helps EWC contractors determine their zoning system requirements. It features a Bypass Calculator to recommend damper models and sizes, and a Control Panel Finder to suggest compatible control panels. Discover products and features to assist in setting up your zoning system.

**Highlights:** Bypass Damper Calculator, Control Panel Finder, Product Discovery, Zoning System Setup Assistance

**Features:** macOS Compatibility, 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 EWC Controls, LLC free?

EWC Controls, LLC is free to download, with no in-app purchases.

### Which has better reviews, HVAC Decoder or EWC Controls, LLC?

EWC Controls, LLC is rated higher. HVAC Decoder averages 4.0 out of 5 from 28 ratings, while EWC Controls, LLC averages 5.0 from 5 ratings.

### Do HVAC Decoder or EWC Controls, LLC have ads?

Neither HVAC Decoder nor EWC Controls, LLC shows ads.

### Which is updated more often, HVAC Decoder or EWC Controls, LLC?

HVAC Decoder ships an update every 3 months, and EWC Controls, LLC every 9 days. Most recently, HVAC Decoder was updated on October 7, 2026 and EWC Controls, LLC on October 2, 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.*