energy saving, from ventilation system, 6 x 120 m3/h, steel ducts, with earth tube heat exchanger, UPR, ecoinvent 3.6, Undefined

ISIC4 categories:
F:Construction/43:Specialized construction activities/432:Electrical, plumbing and other construction installation activities/4322:Plumbing, heat and air-conditioning installation
GLO - Global
Reference year: 2003 - 2003

Location: GLO - Global
The module reflects the impact of the ventilation system in relation to the benefit. It can be used for comparison with other systems for heat production. The date bases on a operation of the ventilation system of 12 month per year.
[The full documentation of this dataset was originally provided in the corresponding ecoinvent report from the Swiss Centre for Life Cycle Inventories, which is accessible for free to guests and users of ecoinvent version 2 ( The dataset may subsequently have been subjected to central changes to the database, as described in the respective change report for each new release.]
Undefined unit processes (UPRs) are the unlinked, multi-product activity datasets that form the basis for all of the system models available in the ecoinvent database. This is the way the datasets are obtained and entered into the database by the data providers. These activity datasets are useful for investigating the environmental impacts of a specific activity (gate-to-gate), without regard to its upstream or downstream impacts.


Reduction of 34.2 MJ/(m2 a) heat demand representative for a low energy building in Zurich and a room temperature of 20°C. Heat demand of the building without ventilation system 105 MJ/(m2 a) according to SIA 380/1. Electricity demand of ventilator (0.4 Wh/m3) representative for DC- or EC-motors and a system design with low pressure drops. Electricity demand of control unit 10 W. Electricity mix for Switzerland used. Ventilation system including ground heat exchanger and 6 decentral ventilation units with an air exchange rate of 120 m3/h each. Distribution of fresh- and exhaust-air within the flat with galvanised steel ducts (100x50 mm).

Process type
Supported nomenclature
ecoinvent 3.6
LCI modeling approach
Before modeling
Multifunctional modeling
Aggregation type
Data provider
Review status
For sale

ecoinvent EULA