# Infiltration

![](https://459479801-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9N5K8lMbAhbyBVgms%2Fuploads%2Fgit-blob-e32e5f5bc7144872e01b3cdea90788b5e9d93897%2FInfiltration.png?alt=media)

![](https://459479801-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9N5K8lMbAhbyBVgms%2Fuploads%2Fgit-blob-a6ea30f535fd412240de22c6e8da9fd249fc90d8%2FInfiltration.png?alt=media) - [\[source code\]](https://github.com/ladybug-tools/honeybee-grasshopper-energy/blob/master/honeybee_grasshopper_energy/src/HB%20Infiltration.py)

Create an Infiltration object that can be used to create a ProgramType or be assigned directly to a Room.

## Inputs

* **name**

  Text to set the name for the Infiltration and to be incorporated into a unique Infiltration identifier. If None, a unique name will be generated. 
* **flow\_per\_ext\_area \[Required]**

  A numerical value for the intensity of infiltration in m3/s per square meter of exterior surface area. Typical values for this property are as follows (note all values are at typical building pressures of \~4 Pa):

  * 0.0001 (m3/s per m2 facade) - Tight building
  * 0.0003 (m3/s per m2 facade) - Average building
  * 0.0006 (m3/s per m2 facade) - Leaky building
* **schedule**

  A fractional schedule for the infiltration over the course of the year. The fractional values will get multiplied by the flow\_per\_exterior\_area to yield a complete infiltration profile. 

## Outputs

* **infil**

  An Infiltration object that can be used to create a ProgramType or be assigned directly to a Room.