Have Hot Air Heat.. Want to add Central Air.I presently have a 2yr old Forced Hot air Furnace and was told I could not install central air utilizing my present ducts as they are "too small"? If they really are, should the duct work be done by the Central Air installer or my Oil heating service?January 22 2008 - US22YesReport 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.