File an HP action to have the city inspector come to your apartment to inspect, the city will represent you in landlord tenant court and require the landlord to come to your apartment to clear all violations including lack of heat. If the landlord fails to repair, then the landlord may aate the rent, the city can make the repairs and bill the landlord for the cost of the repairs. Consult wth an experienced tenant lawyer to assist you.
If this answer is helpful, then please mark the helpful button. If this is the best answer, then please indicate it. Thanks. For further information you should see an attorney and discuss the matter completely. If you are in the New York City area, then you can reach me during normal business hours at 718 329 9500 or www.mynewyorkcitylawyer.com.