You need to remind them of michigan state laws and their duty to provide heat in every living space in your dwelling. State that they must make available heating in your bedroom and it cannot be in the form of electric or temporary/ portable heater due to code violations. If they do not comply or make immediate plans to comply, you can begin the process of notifying michigan housing authority to inspect the dwelling and/or maybe chat with legalaid for suggestions.
Heat and Weatherization
Heat: Under the state Administrative Code, your heating system must be capable of heating every room to 68 degrees Fahrenheit, three feet above the floor and two feet from the exterior walls. If your home is too cold, you can withhold your rent. (See our information on how to withhold rent.)
In Ann Arbor, if a dwelling is cited three times during the winter by the Housing Inspection Department because the heating system will not maintain the required temperature without portable heaters, corrective action (e.g. storm windows, insulation, additional heating capability) may be required. Therefore, it is essential to register complaints with the housing department. (For more information, see our section on Housing Inspections.)
Weatherization in Ann Arbor: If you pay the heat bill, then you need to know about the 1985 City ordinance, ""Weatherization as Responsible Maintenance"" (W.A.R.M.). If you pay the heat bills or pay the landlord for the heat in addition to your rent, your landlord is required to provide basic weatherization. You can obtain a copy of the ordinance by clicking on the link above, or at the Housing Inspection Bureau office at 100 N. Fifth Avenue.
Under W.A.R.M., the landlord has the duty to caulk and weather-strip all doors, windows, cracks and gaps to the outside and insulate the attic to an R-30 insulation grade. However, if your unit was insulated prior to April 1985, it can have R-19 insulation. There are some exceptions to this rule, such as when the landlord pays the heat or lives there, or if the tenant is subletting. The landlord is also required to give an estimate of the average heat bill for the year to prospective tenants upon request. (Section 8:524.)
If your home is not properly weatherized and you are paying the bills, it is time to give your landlord some heat. Write your landlord a letter requesting weatherization compliance within a week or so. If you have already paid some heat bills without the proper weatherization, sit down and compare your heat bills from before and after the place was weatherized. Deduct the difference from your rent. Write your landlord a letter explaining how you came up with these numbers; include copies of the bills.
http://www.michiganlegalaid.org/library_client/resource.2005-05-30.1117489738292