Ventilation Calc - Natural Gas

Natural Gas needs oxygen and a certain amount of oxygen in order to burn correctly.

This app allows you to determine the amount of ventilation required for and open flue and flueless appliance.

We have even included a simple conversion tool should your appliance quote the heat input in gross values.

Features at a glance :
Quick ready reckoner style calculator
Clean and efficient interface
Calculate ventilation for open flue appliances
Calculate ventilation for flueless appliances using 4 appliance types.
Simple conversion section to convert net to gross and gross to net and also BTU/h.
Quick reference glossary for the terms used in the app.
Risk warning when heat input is considered too high for room area.


Please note that you should always consult a heating engineer when considering the ventilation requirements for you appliance. We have taken all reasonable steps to ensure the results given in this application are accurate. If you believe there are inaccuracies in the calculations, please let us know using the support email where we would be delighted to address the issues raised.






DISCLAIMER : Please seek the advice of a trained professional before carrying our any work or estimating for any work. This application generates results that act as a guide / indication only. We cannot accept liability for any loss or damage as a result of using this application and its results.

While the developers of this application make every effort to deliver high quality products, we do not guarantee that our products are free from defects or errors. Our software is provided “as is," and you use the software at your own risk. We recommend that you seek the advice of a certified professional before drawing any conclusions from any calculations generated from the software.
We make no warranties as to performance, merchantability, fitness for a particular purpose, or any other warranties whether expressed or implied.
No oral or written communication from or information provided shall create a warranty.
Under no circumstances shall the developers of this application be liable for direct, indirect, special, incidental, or consequential damages resulting from the use, misuse, or inability to use this software, even if we have been advised of the possibility of such damages.
The developers of the software cannot accept liability for any loss, damage or injury as a result of using the results generated from our software.