Upgrading air conditioning in an Arlington duplexI am considering options of upgrading the air conditioning system in an Arlington, VA duplex that currently has window A/C units on both the first and second floors. I wanted advice on installing a mini-duct, split-duct, or "ductless" air-conditioning system versus central A/C which would require the installation of a duct system throughout the home. I believe the mini-duct will be less expensive and result in greater energy efficiency (cool only the areas you need) than central A/C but will include the wall units which may not be appealing to future buyers. I am renovating this house to live in but with an eye to future resale value. Suggestions? Experience from other homeowners or real estate pros?May 23 2012 - Arlington00YesReport 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.