Hello everybody 

We have recently replaced 3 budget range overhead door closers with DDA approved ones on some inner front doors on a residential development.

The budget closers were closing all doors lovely but the client required something a little lighter for the older residents ease of use .

Since fitting the DDA closers we now have a serve Vacuum problem that didn’t really appear to be present beforehand. 
Is it possible that somehow or for some reason the DDA’s have highlighted the problem more than the budget closers were ? 
 

Any thoughts or ideas would be great or possible solutions . We don’t have the option of vents etc so could do with another solution .

Regards Oliver