Chicago Door Contractor

[Kevin Coleman]

Does anyone have a recommendation for a Chicago contractor that can fix or replace a drafty front door?  

The ground floor unit on my 3flat is slightly below grade so when when you open the front door you see a 3-4" concrete step up directly in front of the door. The door is extremely drafty when it is cold so much so that on extremely cold days its hard for the tenants to keep the apartment warm. I put in the "stick on" door seals but they are not sufficient.  The jamb could use a little work too.