We rent an apartment and landlord had new furnace installed last fall. Paid propane gas every 2 weeks. This year, the landlord had someone look and no one checked to see we were blowing out all our heat from an open duct, at least 1 1/2 to 2 feet wide to 1 foot high into the basement toward dirt leading to outside. That's a huge opening! Ugh! Is the landlord liable? The company that installed the new furnace or the company we bought the propane gas from? Someone should have made sure the setup is correct. We wasted who knows how much money last year and two weeks this year just to heat dirt in the basement. Thank you in advance.