I would give no stars if I could. I bought a groupon voucher for my air con to be cleaned and re-gassed. I booked a slot with ATS in Horfield on line for a couple of weeks time. I arrived on the day/time & staff were not aware of the booking. I was advised that the job would take 2 hours so I took a walk to a nearby cafe. When I returned I was informed that the air con could not be re gassed & was faulty with either a hole in the piping or a faulty condenser. ATS had no diagnostic specialised air con equipment so could not be more specific. I then took my car to another garage where the car was re-gassed without a problem!? Either staff at ATS were overbooked & had no time for the job or the groupon voucher was the issue ( no new cash being received) I don’t know but all I would say is stay clear of this place. A total waste of my time.