Thermal Transmittance Calc

Thermal Transmittance Calc

Determination of heat loss

10 ratings
6 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • August 24, 2019
  • February 14, 2026

Features

Thermal Transmittance Calc screenshot #1 for iPhone
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Thermal Transmittance Calc screenshot #5 for iPhone
Thermal Transmittance Calc screenshot #6 for iPhone
Thermal Transmittance Calc screenshot #7 for iPhone
Thermal Transmittance Calc screenshot #8 for iPhone
Thermal Transmittance Calc screenshot #9 for iPhone
Thermal Transmittance Calc screenshot #10 for iPhone
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About

Calculate heat loss and humidity issues in building structures. Input air temperature, humidity, and material layers to visualize temperature and dew point changes. Supports both Celsius/Fahrenheit and cm/inches.

โœ“Calculate heat loss
โœ“Identify humidity problems
โœ“Visualize temperature and dew point changes
โœ“Supports Celsius and Fahrenheit
โœ“Supports centimeters and inches
โœ“Easy data entry and immediate results
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What's New in Thermal Transmittance Calc

1.5

February 14, 2026

Bugs fixed.

2

In-App Purchases

$2.99

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Remove all the ads within the app.

User reviews

Missing basic features

App missing basic features. overall good app, however if there was an option to build : Wall layers , another one be called Roof layers ,another ground layers. That way will make more sense
A useful option would be to see the layers in a 3d like image
Another suggestion is that ,allowing the production of a report that shows all the above suggestion on one paper
Cutdown to do the developer , please carry on developing the app
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Good app would like to collaborate

Iโ€™ve been using this app on site surveys to compile quick u-value calculations based on what constructions are actually on site.
I would be interested in rebranding/reselling this app to other surveying companies in my sector, but donโ€™t actually seem to be getting any responses from the developer to my sent emails?
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M Biernat

I am an architect in England. This would be a seriously useful app, but the values for air in cavities where convection is a dominant feature and wall ties are required are very wrong. The developer needs to consult British and international standards for this app to be useful for professionals.

Works great but missing basic features

Good quick checking tool for facade build ups, but it appears to be missing very basic functionality, such as saving and re-loading your proposed wall assemblies. Localised weather data for a 12 months period would also assist with determining interstitial condensation risk for the full spectrum of climatic conditions. Hopefully, the app will continue to be developed to include additional functionality and features.
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Good Dew point app

It does what is supposed to do, it only needs two things; 1.) Save wall builds styles 2.) export capabilities, jpeg, pdf, and/or dwg
Hope you can make those requests soon to get you to the five stars

Response from developer

Thank you for your feedback. This functionality will be added in future updates.

Developer apps

FAQ

What is Thermal Transmittance Calc used for?

Thermal Transmittance Calc helps you check existing and plan future building insulation. It calculates likely heat losses and potential humidity problems by analyzing the layers of your building's structure and environmental conditions.

Does Thermal Transmittance Calc have ads?

Yes, Thermal Transmittance Calc contains advertisements. This is common for free utility applications that offer in-app purchases for additional features or an ad-free experience.

What units does Thermal Transmittance Calc support?

Thermal Transmittance Calc supports flexible unit input. You can enter air temperature in both Celsius and Fahrenheit, and layer sizes in centimeters and inches.

How does Thermal Transmittance Calc show results?

The app provides a schedule that visualizes how temperature and humidity will change within the building structure. It also indicates where the dew point will be located in the different layers.

What devices is Thermal Transmittance Calc available on?

Thermal Transmittance Calc is available for iPhone, iPad, and iPod devices. It is designed for Apple's mobile operating system.

How often is Thermal Transmittance Calc updated?

The latest version of Thermal Transmittance Calc is 1.5, last updated on February 14, 2026. This indicates a relatively recent update, suggesting ongoing development and support.

What is the age rating for Thermal Transmittance Calc?

Thermal Transmittance Calc has an age rating of 4+. This means it is considered suitable for children aged 4 and above, with no mature content.

What is the user rating for Thermal Transmittance Calc?

Thermal Transmittance Calc has a user rating of 4.1 stars based on 10 ratings. This suggests that most users find the app to be useful and of good quality.