Dave Sr. from SWISCO responded:
December 4, 2014
I don't think the door closer is the problem, but rather it is the "air lock" between the storm door and the interior door when both doors are closed. Try bring up the door sweep on the bottom, maybe that could allow air to escape. You can also be careful to close the storm door first (sometimes not so easy). We do carry a heavy duty storm door closer with a torsion bar (our 40-015). They use this type on the steel security storm door, but there is no guarantee this will solve your problem either.
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