Exhibit 32.2
CERTIFICATION OF CHIEF FINANCIAL OFFICER
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)
Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), the undersigned officer of InfuSystem Holdings, Inc., a Delaware corporation (the “Company”), does hereby certify, to such officer’s knowledge, that:
The quarterly report on Form 10-Q for the quarter ended March 31, 2023 (the “Form 10-Q”) of the Company fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.
Date: May 9, 2023
/s/ Barry Steele
 Barry Steele
Chief Financial Officer