Mike Lamb 47 Report post Posted December 19, 2019 It is too cold to run AC around here. Would the corrosion at the suction line connection at the furnace air handler be indicative of a refrigerant leak? Quote Share this post Link to post Share on other sites
Anatol 1 Report post Posted December 19, 2019 Probably not, but the corrosion could cause a leak. Anatol 1 Quote Share this post Link to post Share on other sites
Marc 67 Report post Posted December 19, 2019 Corrosion doesn't indicate a leak but it does indicate the wrong fitting. That fitting is the wrong one. If there's no sight of any oil, I'd not write it. If there is oil, there's likely a leak. 1 Quote Share this post Link to post Share on other sites
