Bathroom Fans: Advertised vs Measured Flow

Описание: In this video, we explore why many exhaust fans fail to move as much air as advertised, especially when connected to ducting. Our hands-on demonstration reveals some surprising truths about airflow dynamics and fan efficiency.

Key Issues We Discuss:
Overstated Airflow Ratings: Many exhaust fans don't deliver the airflow promised in marketing materials, even under ideal conditions.
Impact of Ducting: Airflow reduces significantly when fans are ducted over a few meters, as resistance increases.
Design Flaws:
Some fans have large openings to the roof for fixings, creating inefficiencies.
Axial fans struggle to move air effectively when restricted by ducting or when room doors are closed, causing further restrictions.
Quality Concerns: Poor quality assurance (QA) during manufacturing may result in fans that underperform.
A Better Alternative:
We also touch on the high-performance Green Star-rated exhaust fans available in the US. These fans are built to a much higher standard compared to many options available in Australia, offering better airflow performance and energy efficiency.

For more details, visit Green Building Council of the United States and learn about their stringent quality and performance standards for exhaust fans.

Whether you're upgrading your home ventilation or simply curious about airflow science, this video provides valuable insights to help you make informed decisions!

Acin Flow Finder
https://acin.nl/en/air-measurement-in...
US Energy Star
https://www.energystar.gov/productfin...