Problem: Published evidence demonstrates that thirty minutes of preoperative warming decreases adverse outcomes of inadvertent perioperative hypothermia, such as poor wound healing, increased blood loss, and prolonged recovery. Preoperative warming for colorectal surgery patients has been initiated at a large academic facility based on early recovery after surgery colorectal guidelines. Missed patients and inconsistent warming times were noted, and the most significant barrier identified was limited time for implementation. Purpose: This quality improvement project aims to optimize preoperative workflow to ensure thirty minutes of preoperative warming for all colorectal patients in early recovery after surgery. Methods: Workflow optimization starts with the early allocation of a warming device and blanket before patient admission. The day shift nurse then initiates preoperative warming and documents the warming stop and end time. Compliance with workflow and total preoperative warming minutes were tracked via a laminated response code placed at the nursing workstation. Results: Sixty-three colorectal surgical patients requiring 30 minutes of preoperative warming before general anesthesia were identified. Workflow compliance and compliance with thirty minutes of preoperative warming averaged 59%. Conclusions: Workflow optimization is a cost-effective and feasible means to ensure the recommended thirty minutes of preoperative warming is done before surgery. The goal of 100% of colorectal surgical patients with thirty minutes of preoperative warming was unmet. An increase in total surgical groups implementing preoperative warming resulted in higher patient volume compared to the total warming devices available. Discussion with hospital leadership to increase the total count of warming devices to meet needs is underway. Agreement by champions to continue workflow and interest in tracking total preoperative warming minutes will ensure sustainability and implementation into practice.