We are frequently asked if closing off HVAC vents to rooms that are not frequently used saves you any money. The short answer is, “No”. But let’s discuss the longer version of the answer so we understand why it doesn’t save you money…
The practice of closing off rooms that were not in use dates back to when most homes were heated from a central location, such as a fireplace. Back then it did help to heat the house faster and save on whatever you were using to heat your home (i.e. wood).
Most homes today have central heating and air conditioning systems which only work at their peak efficiency if all vents in the home are open. In fact, shutting off vents can actually increase your energy cost – not reduce them. Why? Well, the reason is fairly simple – because a modern home’s HVAC system is designed to heat (or cool) an entire residence, and the equipment is sized according to this need. When you shut off part of the air flow, you are increasing the air press on the system. This, in-turn, can increase the amount of leakage from your ductwork.
If you have closed too many vents in your home you can actually cause your HVAC system to malfunction. This can happen because our systems today rely on a certain amount of air flow to maintain a certain temperature within them.
As you can see, it does not pay to try to save money by closing off air vents in certain rooms, but there are many other ways you can save on energy cost. Call Carmine’s today at 203-791-8089 and let us help you find a way to save on mounting energy cost.