Among the several endometrial ablation devices available for treatment of menorrhagia, there is wide variation in the preferred device. It is unclear whether patients should be treated in the outpatient or day-case general anesthesia setting. One device, thermal balloon endometrial ablation (TBEA), has become popular in the last decade. Several prognostic factors are associated with favorable outcome after TBEA: older age, higher intrauterine pressure, anteverted compared with retroverted uterus, shorter uterine length, and lower (<10 mL) intrauterine balloon volumes.