425

Filed by Tyco International plc

pursuant to Rule 425 under the Securities Act of 1933

and deemed filed pursuant to Rule 14a-12

under the Securities Exchange Act of 1934

Subject Company: Johnson Controls, Inc.

SEC File No.: 001-05097

Date: February 10, 2016

Explanatory Note: The following is a form letter to be used by Tyco International plc in communications with customers.

Tyco/Johnson Controls Merger

Customer Letter

Dear Valued Customer:

On January 25, 2016, we announced the news that Tyco and Johnson Controls have agreed to merge to create the global leader in building products and technology, integrated solutions and energy storage – Johnson Controls plc.

We are excited about combining our established, industry-leading businesses, cutting-edge innovation pipelines and extensive global footprints to enhance our offerings for customers. By bringing together our complementary products and services, customers will benefit from integrated product, installation and service capabilities across fire, security, controls, HVAC and energy storage. Together, we will be uniquely positioned to provide the most comprehensive portfolio of building and energy solutions.

I want to assure you that our commitment to [insert name] remains unchanged. After the closing of the merger, we believe the combined company will be positioned to better partner with you to help support your goals as well as enhance the experience for your own customers.

Assuming we receive regulatory approvals and satisfy customary closing conditions, we expect to complete the merger by September 2016. Until then, it will be business as usual, and there will be no changes in how your Tyco team serves you.

Later in the year, we plan to share more information about the expanded solutions we will offer as a combined company as well as any other changes that are noteworthy. We recognize that your relationship with your Tyco account team is important to you and to your organization. Please share any questions or concerns you may have with them. Our highest priority is to continue to serve you with the highest quality of service.

We greatly appreciate your confidence in Tyco and look forward to continuing our strong business relationship with you.

Regards,

(Please see next page for important information investors and shareholders)


IMPORTANT INFORMATION FOR INVESTORS AND SHAREHOLDERS

This communication is not intended to and does not constitute an offer to sell or the solicitation of an offer to subscribe for or buy or an invitation to purchase or subscribe for any securities or the solicitation of any vote or approval in any jurisdiction, nor shall there be any sale, issuance or transfer of securities in any jurisdiction in contravention of applicable law.

In connection with the proposed transaction between Johnson Controls, Inc. (“Johnson Controls”) and Tyco International plc (“Tyco”), Tyco will file with the U.S. Securities and Exchange Commission (the “SEC”) a registration statement on Form S-4 that will include a joint proxy statement of Johnson Controls and Tyco that also constitutes a prospectus of Tyco (the “Joint Proxy Statement/Prospectus”). Johnson Controls and Tyco plan to mail to their respective shareholders the definitive Joint Proxy Statement/Prospectus in connection with the transaction. INVESTORS AND SECURITY HOLDERS OF JOHNSON CONTROLS AND TYCO ARE URGED TO READ THE JOINT PROXY STATEMENT/PROSPECTUS AND OTHER RELEVANT DOCUMENTS FILED OR TO BE FILED WITH THE SEC CAREFULLY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT JOHNSON CONTROLS, TYCO, THE TRANSACTION AND RELATED MATTERS. Investors and security holders will be able to obtain free copies of the Joint Proxy Statement/Prospectus (when available) and other documents filed with the SEC by Johnson Controls and Tyco through the website maintained by the SEC at www.sec.gov. In addition, investors and security holders will be able to obtain free copies of the documents filed with the SEC by Johnson Controls by contacting Johnson Controls Shareholder Services at Shareholder.Services@jci.com or by calling (800) 524-6220 and will be able to obtain free copies of the documents filed with the SEC by Tyco by contacting Tyco Investor Relations at Investorrelations@Tyco.com or by calling (609) 720-4333.

PARTICIPANTS IN THE SOLICITATION

Johnson Controls, Tyco and certain of their respective directors, executive officers and employees may be considered participants in the solicitation of proxies in connection with the proposed transaction. Information regarding the persons who may, under the rules of the SEC, be deemed participants in the solicitation of the respective shareholders of Johnson Controls and Tyco in connection with the proposed transactions, including a description of their direct or indirect interests, by security holdings or otherwise, will be set forth in the Joint Proxy Statement/Prospectus when it is filed with the SEC. Information regarding Johnson Controls’ directors and executive officers is contained in Johnson Controls’ proxy statement for its 2016 annual meeting of shareholders, which was filed with the SEC on December 14, 2015. Information regarding Tyco’s directors and executive officers is contained in Tyco’s proxy statement for its 2016 annual meeting of shareholders, which was filed with the SEC on January 15, 2016.

STATEMENT REQUIRED BY THE IRISH TAKEOVER RULES

The directors of Tyco International plc accept responsibility for the information contained in this communication. To the best of their knowledge and belief (having taken all reasonable care to ensure such is the case), the information contained in this communication is in accordance with the facts and does not omit anything likely to affect the import of such information.

Lazard Freres & Co. LLC, which is a registered broker dealer with the SEC, is acting for Tyco International plc and no one else in connection with the proposed transaction and will not be responsible to anyone other than Tyco International plc for providing the protections afforded to clients of Lazard Freres & Co. LLC, or for giving advice in connection with the proposed transaction or any matter referred to herein.

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION.

This communication is not intended to be and is not a prospectus for the purposes of Part 23 of the Companies Act 2014 of Ireland (the “2014 Act”), Prospectus (Directive 2003/71/EC) Regulations 2005 (S.I. No. 324 of 2005) of Ireland (as amended from time to time) or the Prospectus Rules issued by the Central Bank of Ireland pursuant to section 1363 of the 2014 Act, and the Central Bank of Ireland (“CBI”) has not approved this communication.