; and (2) in section 8(o) ( 42 U.S.C. 1437f(o) ), by adding at the end the following: (21) Carbon monoxide detectors (A) In general Each owner of a dwelling unit receiving tenant-based assistance or project-based assistance under this subsection shall ensure that not less than 1 carbon monoxide detector is installed per floor in the dwelling unit in accordance with standards and criteria acceptable to the Secretary for the protection of occupants in the dwelling unit. (B) Rehabilitation With respect to a property receiving tenant-based assistance or project-based assistance for which the owner is undergoing or planning a substantial rehabilitation project, the owner shall ensure that, during that rehabilitation, not less than 1 carbon monoxide detector is installed per floor in each dwelling unit assisted in that property in accordance with standards and criteria acceptable to the Secretary for the protection of occupants in the dwelling unit. . (d) Additional funding There are authorized to be appropriated to carry out the amendments made by this subtitle $1,000,000 for each of fiscal years 2022 through 2031. S COVID–19 Mortgage Relief 41901. Mortgage relief (a) Short title This section may be cited as the COVID–19 Mortgage Relief Act . (b) Mortgage relief (1) Forbearance and foreclosure moratorium for covered mortgage loans Section 4022 of the CARES Act ( 15 U.S.C. 9056 ) is amended— (A) by striking Federally backed mortgage loan each place such term appears and inserting covered mortgage loan ; and (B) in subsection (a)— (i) by amending paragraph (2) to read as follows: (2) Covered mortgage loan The term covered mortgage loan means any credit transaction that is secured by a mortgage, deed of trust, or other equivalent consensual security interest on a 1- to 4-unit dwelling or on residential real property that includes a 1- to 4-unit dwelling, except that it shall not include a credit transaction under an open end credit plan other than a reverse mortgage.