HVAC pros reveal if you should close vents in unused rooms – the answer feels counter-intuitive but it's true

Modern living room with plush gray couch facing large screen wall-mounted television, beneath an air ventilation system.

When it comes to saving energy and cutting heating or cooling costs, many homeowners think closing vents in unused rooms is a smart move. However, doing so can lead to bigger system problems and a rise in energy bills.

This seemingly logical practice to close vents in rooms not in use can backfire, leading to energy inefficiency, higher bills, and even damage your heating, ventilation and air conditioning (HVAC) system.