A new device for field measurement of air handler flows

Larry Palmiter, Paul W. Francisco

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Accurate measurement of air handler flows is important for estimating duct efficiency and for verification of adequate flow for air conditioners and heat pumps. This paper describes the development and test results for a new device that offers improved accuracy over traditional methods. The device has been under development for about two years. The initial proof-of-concept laboratory tests demonstrated that accuracy of a few percent was obtainable. This paper describes the laboratory test results for the final design as well as the results of field evaluation of the device on several dozen homes. Results from the flow device are compared with those from use of a duct tester as well as the traditional temperature rise method. Both accuracy and precision are evaluated for all three methods.

Original languageEnglish (US)
Title of host publicationProceedings ACEEE Summer Study on Energy Efficiency in Buildings
Number of pages10
StatePublished - Dec 1 2000
Externally publishedYes

ASJC Scopus subject areas

  • Energy(all)


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