I purchased a new 700 CFM rated 1 stage DC. Measuring the air speed at the end of the stock 6' of 4" flex hose (with a Kestrel 1000 anemometer) I calculate about 450 CFM for the machine. This is brand new (clean bags) and is how the manufacturer says they rate their unit (brand new, at the end of the stock hose). Is this reasonable? Has anybody else tested a new DC and found similar departure from manufacturer's claim?
Do you think I have reason to ping on the manufacturer and ask for a refund? I purchased this unit counting on the 700 CFM to get me at least 400 CFM by the time I got to the point of work. Starting at 450 only gets me about 275 at the point of work.