BTU Calculator vs Bluon HVAC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BTU Calculator
Estimate the cooling capacity needed for your data center. This tool considers factors like space, occupants, and heat output to help you maintain optimal temperature and humidity. It provides instant results as you update inputs, serving as a guide for system selection.
- Estimate cooling capacity
- Maintain 24°C and 30-50% humidity
- Consider space, occupants, window R-value
- Calculate total heat output
- Instant cooling load results
- Guide for system selection
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Choosing the right data center cooling system for your data center is essential to the success of all companies that depend on achieving business-critical continuity. The application uses a simple calculation method to estimate the cooling capacity you'll need to maintain a temperature of 24°C with a humidity level of between 30 and 50 percent for regions that have a climate which ranges from temperate to continental. The features included in this app: • will consider such factors as the amount of space to be cooled, the number of occupants, the orientation and R-value of windows, the total heat output of a data center and more. • allows you to instantly view total cooling load results as you update input data Please note that this calculator can only gauge a rough estimate. This application should only be used as a guide. As always you should always consult a professional and qualified contractor.
Bluon HVAC
Access a vast database of HVAC models, manuals, and part lists to speed up your work. Utilize an AI-powered troubleshooting tool or connect with experienced technicians for real-time support.
- 500,000+ HVAC unit database
- Manuals and part lists
- AI troubleshooting tool (MasterMechanic)
- Live support from veteran techs
- HVAC industry upgrade tools
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Bluon provides the technical information and support to tackle any job in HVAC-R and plumbing. Scan or search for any unit to find the documentation on over 35,000,000+ HVAC models across virtual every brand. Instantly access the key model specs, age/warranty, manuals, original parts, part specs, and replacement options. See which suppliers carry which part - you can even text/email them or order directly through their website. Get detailed troubleshooting guidance from MasterMechanic, our custom A.l. built with the database and with the problem/solution knowledge of over 135,000 live support calls, or call our Live Tech Support line to connect to our team of 25+ year veteran technicians. Bluon has your back. App Features Include: - Database of 35,000,000+ HVAC units (manuals, specs and part lists) - Master Mechanic: leading A.I. tool for techs - Live Support line: talk to REAL veteran techs to solve problems in the field!
Screenshots
Verdict
The clearest difference is in-app purchases: Bluon HVAC at none against BTU Calculator's 1. Bluon HVAC also leads on update cadence (monthly vs every 4 months) and ratings volume (4.5K vs 318). BTU Calculator's advantage is review sentiment (69% vs 55%) and iOS requirement (12.0 vs 15.1). On price, rating, ads 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
Both are free to download. BTU Calculator sells 1 one-off in-app purchase. Bluon HVAC asks for nothing beyond the download.
Bluon HVAC holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Bluon HVAC has 4.5K ratings behind it against 318, so its average is the more settled of the two. Written reviews complicate that: 69% of BTU Calculator's written reviews are positive against 55% of Bluon HVAC's, so the app with the better star average is not the one people write more warmly about.
BTU Calculator ships an update every 4 months, Bluon HVAC monthly. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | BTU Calculator | Bluon HVAC |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (318 ratings) | 4.8 (4.5K ratings) — better |
| Positive reviews | 68.8% of reviews — better | 54.6% of reviews |
| Number of ratings | 318 | 4.5K — better |
| Update frequency | Every 4 months | Monthly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 23 MB | 170 MB |
| Age rating | 4+ | 4+ |
| Developer | Cristinel Bontas | Bluon, Inc. |
Customer experience
BTU Calculator
Bluon HVAC
Bugs and requests
BTU Calculator
Not enough reviews yet to summarise bugs or requests.
Bluon HVAC
Reported bugs
2 issues- Login/password reset issues
- Frequent crashes or loading problems
Requested features
3 requests- Individual technician subscription option
- More comprehensive coverage of HVAC equipment models
- Ability to access full manuals without restrictions
In-app purchases
BTU Calculator
- Remove Ads$0.99
Bluon HVAC
No in-app purchases
Questions
Is BTU Calculator free?
Is Bluon HVAC free?
Which has better reviews, BTU Calculator or Bluon HVAC?
Do BTU Calculator or Bluon HVAC have ads?
Which is updated more often, BTU Calculator or Bluon HVAC?
Other comparisons
