August 21, 2019 Akhil Johri Executive Vice President & Chief Financial Officer United Technologies Corporation 10 Farm Springs Road Farmington, CT 06032 Re: United Technologies Corporation Form 10-K for the Fiscal Year Ended December 31, 2018 Filed February 7, 2019 File No. 001-00812 Dear Mr. Johri: We have completed our review of your filing. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Sincerely, Division of Corporation Finance Office of Transportation and Leisure