ACCA DuctWheel vs EWC Controls, LLC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ACCA DuctWheel
This app simplifies HVAC duct sizing using ACCA's Manual D standard. It offers an interactive digital wheel for various duct types, pressure calculations, and environmental corrections. Save snapshots and switch between calculation wheels for efficient design.
- ACCA Manual D compliant
- Digital duct sizing wheel
- Supports various duct types
- Converts round to rectangular ducts
- Calculates pressure and friction rate
- Altitude and temperature correction
- Snapshot saving
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Accurate HVAC duct sizing the easy way. DuctWheel is the only duct sizing measurement app powered by ACCA's Manual D, the ANSI standard for residential duct design. It features the same easy interface as the popular wheel sizing device that technicians have been using for years—now you can zoom in, lock the wheel in place, take a snapshot for future reference, and it never wears out! Flip between two different wheels for different calculations. Uses: Sizes metal ducts, lined metal ducts duct board airways, and wire helix flexible ducts; converts round shapes to equivalent rectangles; correlates available pressure with the total effective length and friction rate (Manual D Sizing Calculations); converts velocity pressure and vice versa; corrects for altitude and temperature. Includes instructions manual.
EWC Controls, LLC
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.
- Bypass Damper Calculator
- Control Panel Finder
- Product Discovery
- Zoning System Setup Assistance
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Built for EWC contractors, use our new mobile app to determine your EWC zoning system needs. Use the Bypass Calculator to find out what model and size Bypass Damper you should use with your system based on your input. Use the Control Panel Finder to find out what model Control Panels you can use based on what you need. Discover products and features that will help you decide what parts you need to set up your zoning system!
Screenshots
Verdict
The clearest difference is review sentiment: EWC Controls, LLC at 100% against ACCA DuctWheel's 45%. EWC Controls, LLC also leads on price (Free vs $24.99) and rating (5.0 vs 3.3). ACCA DuctWheel's advantage is iOS requirement (11.0 vs 16.4). On ratings volume, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
EWC Controls, LLC is free to download; ACCA DuctWheel costs $24.99 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 3.3. Both are backed by a comparable volume of ratings — 13 and 5 respectively. Written reviews point the same way: 45% of ACCA DuctWheel's written reviews are positive against 100% of EWC Controls, LLC's.
ACCA DuctWheel ships an update every 44 months, EWC Controls, LLC every 9 days. The most recent releases landed on November 7, 2026 and November 2, 2026 respectively.
| Parameter | ACCA DuctWheel | EWC Controls, LLC |
|---|---|---|
| Price | $24.99 | Free — better |
| Rating | 3.3 (13 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 45.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 13 — better | 5 |
| Update frequency | Every 44 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 11.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 18 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Air Conditioning Contractors of America | EWC Controls, Inc. |
Customer experience
ACCA DuctWheel
EWC Controls, LLC
In-app purchases
ACCA DuctWheel
No in-app purchases
EWC Controls, LLC
No in-app purchases
Questions
Is ACCA DuctWheel free?
Is EWC Controls, LLC free?
Which has better reviews, ACCA DuctWheel or EWC Controls, LLC?
Do ACCA DuctWheel or EWC Controls, LLC have ads?
Which is updated more often, ACCA DuctWheel or EWC Controls, LLC?
Other comparisons
