Can a landlord be responsible for an increased electric bill incurred due to a heating unit that has not been repaired?

Question Details:

We moved into a townhome in 12/10. Our heating has not worked properly since we moved in, so ur electric bill is about 3 times the amount it should be due to the heating unit working improperly. Can our landlord be responsible for not repairing our unit in a timely fashion? Important Notice