This paper reports on the design and performance of an insulated infrared spectro-electrochemical cell that is capable of operation at temperatures other than ambient. The cell is built around a glass chamber that holds electrolyte solution and the working and counter electrodes. The front of the chamber consists of an o-ring seal joint onto which the cell window is mounted. The reference electrode is held in a separate compartment behind a wetted stopcock and connects to the glass chamber through a capillary tube. The glass chamber is insulated and secured inside an aluminum jacket. The aluminum jacket provides support for the glass chamber and brings the cell dimensions to those typical of a conventional KeI-F infrared spectroelectrochemical cell. Cell operation up to 75 °C is demonstrated through studies of the surface electrochemistry of CO.