Rheem Calcu Save vs EWC Controls, LLC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rheem Calcu Save
This app helps HVAC contractors quickly calculate and present potential cost savings to homeowners when comparing residential HVAC system replacements. It generates professional reports showing annual savings for high-efficiency systems, aiding customer decision-making.
- Calculate HVAC system replacement cost savings
- Compare multiple replacement options
- Generate professional graphical reports
- Email reports to customers
- Uses Emerson Climate Technologies OPI database
- Compares against industry minimum standards
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The Rheem Calcu Save mobile app provides on-the-go access for contractors to calculate cost savings for homeowners by comparing residential HVAC system replacement options. Made of the good stuff: The Rheem Calcu Save app uses Emerson Climate Technologies Online Product Information (OPI) database for Rheem Heating & Cooling products to give contractors the ability to generate reliable, accurate, graphical reports. Beautiful reports, in 3 easy steps: 1. Enter in a few parameters relevant to the specific residential HVAC task, such as current system efficiency standards and their considered replacement options. 2. After the details of the job are entered into the app, the app generates a professional-looking report that shows annual cost savings of high efficiency systems. 3. Email your customers or even yourself a copy of the reports generated. More than meets the eye: The Rheem Calcu Save app offers up to three replacement system options, which are also compared with current industry minimum standards, for the contractor and the homeowner. This will allow homeowners to more easily choose a replacement HVAC system to meet their particular needs.
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 Rheem Calcu Save's 0%. EWC Controls, LLC also leads on rating (5.0 vs 4.3) and update cadence (every 9 days vs every 2 months). Rheem Calcu Save's advantage is ratings volume (44 vs 5) and iOS requirement (12.0 vs 16.4). On price, ads, in-app purchases and monetization model 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
Both are free to download. 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 4.3. That said, the two scores are not equally well evidenced: Rheem Calcu Save has 44 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 0% of Rheem Calcu Save's written reviews are positive against 100% of EWC Controls, LLC's.
Rheem Calcu Save ships an update every 2 months, EWC Controls, LLC every 9 days. Both last shipped on November 2, 2026.
| Parameter | Rheem Calcu Save | EWC Controls, LLC |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (44 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 44 — better | 5 |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 20 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Copeland LP | EWC Controls, Inc. |
Customer experience
Rheem Calcu Save
EWC Controls, LLC
In-app purchases
Rheem Calcu Save
No in-app purchases
EWC Controls, LLC
No in-app purchases
Questions
Is Rheem Calcu Save free?
Is EWC Controls, LLC free?
Which has better reviews, Rheem Calcu Save or EWC Controls, LLC?
Do Rheem Calcu Save or EWC Controls, LLC have ads?
Which is updated more often, Rheem Calcu Save or EWC Controls, LLC?
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