I am having problems with my dyson dc07 hepa filter. When using the floor part of the hoover, there seems to be less suction power then there was. But when I use the tools the suction is a lot better. Any advise?
I have cleaned filters and checked for blockages and doesn't seem to be any leaks from any of the pipes or fittings?

I found a fantastic Video Resource for you covering all of the reasons a Dyson may have a loss of suction and performance:

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