Measuring air flow in an HVAC duct can be a tricky business. Paddle wheel and turbine flow meters introduce not only resistance but maintenance issue due to accumulated dust and debris.

What effect do your air ducts have on your home's air quality and ... due to an inability for sufficient air to flow through the system,” says Frances J. Dietz, vice president of public affairs ...

If you’ve been noticing unexplained allergy symptoms, higher energy bills, or inconsistent airflow, it may be time to ...

One-dimensional duct showing control volume ... the difference between the pressure sensed by the Pitot tube and the pressure of the surrounding air flow, it can give a very accurate measure of the ...

But sometimes, it’s hard to figure out what improved really means. Think about air ducts that cool the part after printing. In theory, it should be easy to design a new duct. But how does it ...

An air duct between the air filter housing and the throttle body; Between two rubber or plastic air filter housing ducts or ...