A blower door is a machine used to measure the airtightness of buildings.
Blower door test metodo a.
A temporary blower door equipped with a powerful fan is fitted into the frame of an.
The blower door apparatus allows testers to apply a consistent and measurable pressure to the house so that houses can be compared accurately.
Tests using the blower door enable the builder remodeler to assess the tightness of a building eliminating guesswork regarding leakage and air tightness the test methodology is widely accepted and is used as one of the predictors for energy efficiency in homes.
A blower door test is a machine used to calculate airflow between the interior and exterior of a structure measure the airtightness of buildings and identify spots where air is leaking through a building envelope.
How a blower door works.
It can also be used to measure airflow between building zones to test ductwork airtightness and to help physically locate air leakage sites in the building envelope.
Professional energy auditors use blower door tests to help determine a home s airtightness.
Performing a one point test no software gather data record five 10 second average minimum baseline readings to determine the level of accuracy perform blower door test using the baseline and cfm50 functions.
These are some reasons for establishing the proper building tightness.
A blower door test is often an essential part of a home audit we don t know for sure just yet if it will be part of the free home energy audits promised by the canadian liberal government in oct 2019 as part of their as part of their net zero home grants interest free home retrofit loans program but we will update this page when we have more information.
When the fan is turned on it creates a pressure difference between the outside and the inside.
Adjust for temperature using charts not required if delta t less than 30f.
This test ensures a certain level of energy performance and is often used when a project team is aiming for a performance based.
5 1 2 relation to test method e779 these test methods are specific adaptations of test method e779 to orifice blower doors.
5 2 single point method use this method to provide air leakage estimates for assessing improvements in airtightness.
Our energy saver 101 infographic explains the importance of a blower door test during a home energy audit.
Simply put a blower door is a diagnostic tool used to measure how much air infiltration air leakage occurs in a house.
Blower door tests are performed by certified energy auditors to determine to what degree a home is airtight.
During this test a calibrated fan is installed in an otherwise sealed door or window while all the other openings to the exterior are closed.
