Gas Ventilation Calculator UK2.5 - App Store

The Gas Ventilation Calculator will help you find the required ventilation sizes for domestic flueless, open flue and room sealed appliances up to 70kW (net). It also supports multiple rooms, multiple appliances and includes an extractor fan calculator and a vent size calculator.

Flueless:
This calculator will find the required vent size for flueless appliances such as cookers, grills, water heaters and fires. Enter the dimensions of the room and the heat input of the appliance and the calculator will find the vent size required or advise if no vent is needed or that the appliance should not be fitted in that room.

Open Flue:
Enter the appliance heat input and select whether adventitious air is available or if the appliance is in a compartment and the calculator will find the required vent sizes.

Multiple Rooms:
For an open flue appliance where the path to outside is via another room use the 'Walls to outside' option within the Open Flue Calculator to select the number of walls vents need to be fitted into. It will also take into account adventitious air or if the appliance in a compartment as per the selected options.

Room Sealed:
For a room sealed appliance simply enter the heat input and the calculator will find the vent sizes required if the appliance is in a compartment.

Multiple Appliances:
For multiple appliances in one room this app simply provides a guide to remind you of the regulations. The other calculators will then need to be used to find the required vent size.

Extractor Fan:
To find the required performance of a fan for a room enter the room dimensions and type and the performance will be found using pre-set air change rates. A manual ACH can be entered also.

Vent Size:
A calculator is included to find the total size of a vent with rectangular or circular holes.

Version History We've made some small tweaks for iOS 12. 2.5 12/05/2018 We've made a few tweaks here and there plus we added some handy extra buttons for iOS 8 users. 2.4 08/05/2015 A few tweaks and we've also added some guidance about DFE appliances. 2.3 11/17/2014 We've made a few tweaks here and there, you won't notice much but we're working hard to keep our apps on top form. 2.2 08/23/2014 Bug fixes 2.1 02/27/2014 We've redesigned the interface for iOS7, we hope you like the new look!

We've also added support for tumble dryers into the Flueless calculator and added some extra info about DFEs and other appliances into the help pages.

Finally, the multiple appliances guidance has been moved into the information section. 2.0 09/27/2013 Bug fixes 1.3 08/12/2013 - The open flue calculator now allows for appliances in a compartment with adventitious air available to the room(s)

- Heat inputs are now set to net by default

- Bug fixes

Don't forget to rate the app if you like it! 1.2 04/30/2013 Support for space heaters conforming to BS EN 449:1997 added. 1.1 02/06/2013 1.0 12/08/2012