Owners must provide heat from October 1 , 2023 to May 31, 2024. Between the hours of 6:00 a.m. and 10:00 p.m., whenever the outside temperature falls below 55 degrees Fahrenheit you must maintain a temperature in your tenants’ apartments of at least 68 degrees Fahrenheit. Between 10:00 p.m. and 6:00 a.m., owners must keep apartments at a minimum of 62 degrees Fahrenheit irrespective of the outside temperature.