this page issues, making it critical to address the challenge instantly.In general, addressing short-cycling is important to forestall these effects and ensure the ideal operation of your HVAC system.If your HVAC is not producing sound after you convert it off, then there is likely to be a dilemma Together with the contactor relay switch. This is often a fairly easy difficulty to repair.If it’s coming from the furnace (or appears to be), most likely It's a leaking air duct—which would require Experienced repair. If it’s coming with the furnace itself, it would be some sort helpful site of leak that needs to be checked by a technician.