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Category: Industry Articles
Duct Vacuums with 2 impellers vs 1 impeller, does it actaully double the suction?
Sorry, not even close. Placing 2 vacuum impellers inside of one cabinet in theory seems like a good idea, unfortunately thew laws of physics don’t quite agree. Its true it will increase the suction but only slightly. The general theory of suction in simple terms will state that when using 2 impellers side by side…
Clearing the air on “free Air CFM” – Specs for portable duct cleaning vacuums.
Many times when researching equipment for duct cleaning vacuums you will find manufacturers posting the CFM suction ratings on their vacuums as “Free Air” or “bench Test”. The Free air test is the rating on the impeller wheel of the vacuum, simply put it is the maximum amount of airflow the impeller can produce with…