Caylumo Posted June 2, 2016 Report Share Posted June 2, 2016 I have heard several times that this is ok and several times that it is not. What is the issue? The furnace exhaust is approx 9 inches from AC unit. Click to Enlarge 50.48 KB Quote Link to comment Share on other sites More sharing options...
Tom Raymond Posted June 2, 2016 Report Share Posted June 2, 2016 Most manufacturers specify a minimum clear space around the exhaust to minimize draft issues that could shut the furnace down. Also the exhaust contains acidic condensate that will corrode the condenser. Bad for furnace, bad for condenser, bad for anyone that says it's ok. Quote Link to comment Share on other sites More sharing options...
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