CoolCloud HVAC 2.0 vs Klein Borescope ET21
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CoolCloud HVAC 2.0
This application enables HVAC contractors to wirelessly connect with Goodman and Amana air handler and furnace control boards via Bluetooth. It streamlines equipment servicing, maintenance, configuration, and diagnostics for improved energy efficiency and performance.
- Bluetooth connectivity
- Equipment configuration
- Status monitoring
- Diagnostic tools
- Fault code history
- Energy efficiency optimization
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The new CoolCloud HVAC 2.0 application allows contractors to connect and communicate wirelessly via Bluetooth with Goodman and Amana premium air handler and furnace control boards. This provides a more efficient means for servicing and maintaining equipment, making configuration adjustments, gaining equipment status, performing diagnostics, viewing fault code history and ultimately simplifying the technician’s ability to ensure energy-efficiency and reliable performance.
Klein Borescope ET21
This app allows construction workers to capture pictures and videos of worksite progress and details using a WiFi borescope. It facilitates easy documentation of on-site conditions and project advancements.
- Picture capture
- Video recording
- WiFi connectivity
- Worksite documentation
- Progress tracking
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The WiFi Borescope provides construction workers picture and video capture of worksite progress and details
Screenshots
Verdict
The clearest difference is rating: CoolCloud HVAC 2.0 at 2.7 against Klein Borescope ET21's 2.2. Klein Borescope ET21's advantage is update cadence (every 2 months vs every 18 months) and iOS requirement (12.0 vs 15.1). On price, ratings volume, ads and in-app purchases 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.
CoolCloud HVAC 2.0 holds the better App Store score, 2.7 against 2.2. Both are backed by a comparable volume of ratings — 20 and 9 respectively.
CoolCloud HVAC 2.0 ships an update every 18 months, Klein Borescope ET21 every 2 months. Both last shipped on October 21, 2026.
| Parameter | CoolCloud HVAC 2.0 | Klein Borescope ET21 |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (20 ratings) — better | 2.2 (9 ratings) |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 20 — better | 9 |
| Update frequency | Every 18 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Goodman Manufacturing Company, L.P. | Klein Tools |
In-app purchases
CoolCloud HVAC 2.0
No in-app purchases
Klein Borescope ET21
No in-app purchases
Questions
Is CoolCloud HVAC 2.0 free?
Is Klein Borescope ET21 free?
Which has better reviews, CoolCloud HVAC 2.0 or Klein Borescope ET21?
Do CoolCloud HVAC 2.0 or Klein Borescope ET21 have ads?
Which is updated more often, CoolCloud HVAC 2.0 or Klein Borescope ET21?
Other comparisons
