# Boiler Efficiency vs Mean HVAC BS Tools

The clearest difference is review sentiment: Mean HVAC BS Tools at 100% against Boiler Efficiency's 0%. Mean HVAC BS Tools also leads on price (Free vs $5.99) and update cadence (every 2 months vs every 10 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Mean HVAC BS Tools is free to download; Boiler Efficiency costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Boiler Efficiency ships an update every 10 months, Mean HVAC BS Tools every 2 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Boiler Efficiency | Mean HVAC BS Tools |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/mean-hvac-bs-tools/id6621189879/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 2 MB | 54 MB |
| Requires iOS | **14.3** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaup Shenoy Associates](https://appshunter.io/developer/460148822) | [Mean HVAC Consulting & Design LLC](https://appshunter.io/developer/1761936254) |

## What reviewers say

### Boiler Efficiency

[App page](https://appshunter.io/ios/app/boiler-efficiency/id490506363)

Perform preliminary audits on boiler efficiency and identify various losses in steam generation. Customize boiler applications, compare fuel grades, and analyze heat balance and flue gas for potential savings and improvements.

**Highlights:** Boiler efficiency audits, Loss identification, Customizable boiler applications, Fuel grade comparison, Heat balance sheet, Flue gas analysis, CHP (Brayton) cycle analysis

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Mean HVAC BS Tools

[App page](https://appshunter.io/ios/app/mean-hvac-bs-tools/id6621189879)

This utility app offers a suite of calculators for HVAC professionals, including psychrometric analysis, duct sizing, insulation R-value estimation, and air bypass calculations. It helps engineers and technicians quickly determine essential parameters for system design and analysis.

**Highlights:** Single Point Psychrometrics, Mixed Air Psychrometrics, Duct Calculator (CFM, Diameter, Friction, Velocity), Smallest Zone Calculator, Bypass Calculator (Cooling/Heating), IR Wall Insulation R-Value Estimation, Parallel R-Value Calculator, Unit Converter

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Boiler Efficiency free?

Boiler Efficiency costs $5.99, with no in-app purchases.

### Is Mean HVAC BS Tools free?

Mean HVAC BS Tools is free to download, with no in-app purchases.

### Do Boiler Efficiency or Mean HVAC BS Tools have ads?

Neither Boiler Efficiency nor Mean HVAC BS Tools shows ads.

### Which is updated more often, Boiler Efficiency or Mean HVAC BS Tools?

Boiler Efficiency ships an update every 10 months, and Mean HVAC BS Tools every 2 months. Most recently, Boiler Efficiency was updated on October 30, 2026 and Mean HVAC BS Tools on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*