Automotive Services of Medford is a reliable automotive repair shop that deals mainly in heating and AC repair/recharging. They have very reliable service and reasonable prices. These guys treat their customers right and always are willing to treat a customer fair. I do not belive they own their own towing rig so you may need to get AAA or an indipendant garage to handle that if you are unable to get your car to them.
I have NEVER had as helpful a mechanic and I recommend these guys 100%.
Automotive Services of Medford is right near the Meadow Glen Mall and Rt 16