Are there any major issues with this house?Specifically, the heating system (gravity air?) and structure. Being an older house, I'm concerned that the furnace is original and either expensive to run or needs replacing. Are you aware of any water problems or structural issues? Are the pipes original also? How new are the windows and roof? Do you know the average winter and summer utilities bills? Question refers to 135 W Franklin Ave, Crystal Lake, IL 60014January 10 200800YesReport a ProblemProblemSelect oneOffensive contentIrrelevant contentSpam (pure self-promotion)OtherDetailsYour emailPlease enter a valid email address.Submit CancelContent flaggedWe will review this content. Thanks for helping make the site more useful to everyone. To learn more, read Zillow's Good Neighbor Policy.We're sorry. This service is temporarily unavailable. Please come back later and try again.