With the new TrueSeal damper technology, InVent fans reduce air leakage by up to 50% compared to competitive models**, resulting in better home energy efficiency as measured via blower door
Post and beam constructions and single window and door systems made of aluminum in an EIFS facade, to deliver facade built external sun protection, window sills and final Blower Door
Test and manufacture.
While renovating the Portsmouth property Eco Sound performed periodic blower door
tests and added thermal envelope wrapping to help the home achieve Passive House standards for air-tightness.
The Blower Door
Test simulates 20 mph winds on the external walls, roof, and floor, if raised.
We would be invited into someone's house and test it using a large fan called a blower door
to find out how drafty their house was, where the leaks were, or whether it was filled with bad air from being too airtight.
Standards and protocols for conducting blower door
testing to measure the envelope leakage of single-family, detached homes are well understood and consistently applied.
A study conducted in a US home by Bayer MaterialScience LLC researchers to demonstrate the benefits of polyurethane (PU) sealants shows there was a 25 per cent reduction in airflow based on blower door
testing performed before and after the sealant was applied.
Brownmiller uses specialized equipment, including an electronic blower door
that pulls the air out of the house and an infrared camera that detects where air is coming into the house, to determine what energy issues a homeowner may be having.
Quantitative methods for testing air leakage from a building, such as blower door
technology, infrared thermal imaging, and duct blasting, were also part of the training, which took place in classrooms and in hands-on laboratory exercises.
Before certification, each building must pass a blower door
test, in which a fan is used to suck all the air out of the house to check for air leakages.
Some of these methods include blower door
testing, duct pressurization and foundation moisture analysis.
Two methods are used for duct leakage measurement (ASTM 1994): duct pressurization and blower door