Save 10% on testo 440 kits and testo 420 volume flow hood

For a limited time only testo are offering 10% off selected testo 440 kits and testo 420 volume flow hood, from your specialist dealer. Offer ends 31.08.22.

Made for your job – the testo 440 complete kits

The testo 440 combines a compact hand-held measuring instrument with intuitive measurement menus and a comprehensive selection of air velocity & IAQ probes. Use it to keep all your air conditioning and ventilation measurements safely and reliably under control.

Ideal for:

  • Adjusting air conditioning and ventilation systems
  • Checking flow in ducts and at outlets
  • Monitoring air quality
  • Measuring comfort

Discover the versatile testo 440 in practical complete kits now at:

The exceptionally lightweight testo 420 volume flow hood

The testo 420 is the lightest volume flow hood on the market, coming in at just 2.9kg. Light, precise and convenient: the testo 420 volume flow hood significantly facilitates volume flow measurement at larger air intakes and vents.


  • Ergonomic and lightweight (less than 2.9kg)
  • High-precision
  • Efficient
  • Convenient operation via the testo Smart App
  • Compatible measurement, documentation and sending reports with the testo 400

Find out more:



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