No. Pennsylvania law specifically says a person cannot be forced to take a chemical test. However, if you refuse a breath test and are then charged for DUI those charges will be Tier III charges. This tier has the highest possible punishment for sentencing purposes if you are convicted. Breath tests do not have the same constitutional protections as blood tests do. If you refuse a breath test, you will face a license suspension because you refused the breath test. This is a separate license suspension from any license suspension you might receive from a DUI conviction.