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