Comparison

Hansen Ventilation vs Mean HVAC BS Tools

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Hansen Ventilation

Features
Read full description

THE NEW HANSEN VENTLATION APP IS BORN! HANSEN VENTILATION app can easily set up and control the Hansen Pro heat recovery units which are installed in your house in an immediate way, even when you are away from home. The heat recovery units installed can be configured automatically or manually so that they work as a single ventilation system or can be managed as individual ventilation units. Thanks to HANSEN VENTILATION app, you can choose among more than ten different operating modes (Automatic, Manual, Surveillance, Smart, Out-of-Home, Timed Ejection, Night, Intake, Extraction, Airflow) and four airflows. HANSEN VENTILATION app connects to the nearest weather stations for the detection of outdoor environmental conditions and it is also able to control the status of the indoor air quality thanks to an on-board VOC s

About

Mean HVAC BS Tools

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
Read full description

BS Tools is a toolkit of calculators designed for HVAC and other Building Science (BS) applications, as an alternative to more tedious, manual methods. UTILITIES Single Point Psychrometrics: This calculator provides psychrometric properties of air at a glance. It's great for changing humidity units. Mixed Air Psychrometrics: This calculator provides psychrometric properties of the resulting air of two mixed air streams, e.g. ventilation air mixed with return air. Duct Calculator: In a word, it's a classic 'ductulator'. This tool accepts any two choice inputs among CFM (Air Flow Volume), Duct Diameter, Friction Rate (Head Loss), and Air Velocity. This utility will then provide the other two parameters for you. Uses either a round diameter, or rectangular dimensions. Smallest Zone Calculator: This calculator can be used to gauge how much excess air is acceptable in a heating or cooling system. Bypass Calculator: Paired with the Smallest Zone Calculator, this can tell you how much air you can bypass. Values are unique for cooling and heating (adjustable for altitude). IR Wall Insulation: This calculator can help you estimate the R-Value of a wall, with Infrared (IR) exterior and interior surface, and interior ambient temperatures. Provides a common wall material that best matches your readings with a general degree of confidence in that match. Note included tips on measuring for best results. Parallel R-Value: This calculator provides an overall R-Value (and U-Value) for a wood frame building assembly* (typically a wall), given the R-Values of different materials and their areas or proportions present in the assembly. *Not for use with metal framing. ASHRAE 62.2-2019: Gives ventilation CFM requirements corresponding to ASHRAE 62.2-2019. Fan Run-Time: Simple calculator to calculate ventilation system run time, in min/hr, given the ventilation requirement and fan capacity. Pairs nicely with ASHRAE 62.2 Calculator (and is automatically linked). Note: The above calculators use IP (inch / pound) units. Unit Converter: Converts units. Interpolator: For when you have the number you're looking for at THIS point and THAT point but you're actually somewhere BETWEEN those points.

Screenshots

Hansen Ventilation4 screens
Mean HVAC BS Tools4 screens

Verdict

The call

The clearest difference is update cadence: Mean HVAC BS Tools at every 2 months against Hansen Ventilation's every 7 months. On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Hansen Ventilation ships an update every 7 months, Mean HVAC BS Tools every 2 months. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

Scorecard1 real difference · 9 level
Hansen Ventilation versus Mean HVAC BS Tools: the parameters behind the verdict, then further details
ParameterHansen VentilationMean HVAC BS Tools
PriceFreeFree
Rating—5.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—4 — better
Update frequencyEvery 7 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.0 — better15.1
Further details — not scored
Size14 MB54 MB
Age rating4+4+
DeveloperEP spaMean HVAC Consulting & Design LLC

In-app purchases

None

Hansen Ventilation

No in-app purchases

None

Mean HVAC BS Tools

No in-app purchases

Questions

Is Hansen Ventilation free?
Hansen Ventilation is free to download, 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 Hansen Ventilation or Mean HVAC BS Tools have ads?
Neither Hansen Ventilation nor Mean HVAC BS Tools shows ads.
Which is updated more often, Hansen Ventilation or Mean HVAC BS Tools?
Hansen Ventilation ships an update every 7 months, and Mean HVAC BS Tools every 2 months. Most recently, Hansen Ventilation was updated on November 8, 2026 and Mean HVAC BS Tools on October 30, 2026.

Other comparisons