The Climatizing Our Overheated Living Spaces Regulation Amendment Act of 2025 aims to amend Title 12-G of the District of Columbia Municipal Regulations to update the requirements for heating and air conditioning in rental housing. The current regulations mandate that landlords provide air conditioning from May 15 to September 15 and heat from October 1 to May 1. Given the rising average temperatures in the District, the bill proposes to shift the air conditioning availability to start from May 1 and extend it through October 1, while also adjusting the heating period to run from October 15 to April 15. This change allows landlords to transition from heating to air conditioning two weeks earlier and from air conditioning to heating two weeks later than currently permitted.

Additionally, the bill introduces minimum and maximum year-round internal temperature requirements for rental housing where tenants control heating and air conditioning. Specifically, it stipulates that landlords must maintain a minimum temperature of 68°F (20°C) and a maximum of 78°F (26°C) or at least 15°F (9°C) less than the outside temperature when air conditioning is in use. The legislation is set to take effect on October 1, 2027, following approval by the Mayor and a congressional review period.