Closing Return Air Vents In Summer

If you reduce the number of exit points for the cool air your furnace fan can no longer move as much air.

Closing return air vents in summer.

By closing the floor registers and opening the ceiling registers you force the hot air out while keeping the cold air in the room. Closing air vents is a popular strategy for adjusting air flow in the home but it s not necessarily a good one. Keeping the foundation vents open during the summer is a no brainer if you live in a climate with warm humid days and frequent summer storms. Closing them off is like holding a pillow over someones face.

On balance this idea sounds like it has some merit if that is the air that is blocked from one room or rooms because of closed vents simply skips over to a room or rooms with open vents. Look at the nearest air vent in your room. A cold air return is how your furnace and air conditioner gets the air supply to heat or cool the air in your home. The belief is that closing a vent will simply push the air onward to other parts of the home improving energy efficiency.

This process includes closing off your vents and doors but it also involves installing a sump pump a vapor barrier and bringing in a dehumidifier. When airflow is reduced the air is not refreshed quickly enough for proper heat exchange to take place. Hot air moves into the room at a lower rate leading to colder rooms or longer furnace on cycles. The vents provide crucial air circulation that can not.

It is on the main floor that you probably do not want to close any vents. In the summer you want the cold air to remain and the hot air to be drawn out through the return registers. The popular notion has always been to shut off vents in rooms that you use infrequently. After all there s something more to be said for wasting energy and a lot of it.

In general it is usually ok to close vents in a basement. With this in mind crawl space encapsulation will not work without closed vents. Your furnace fan is moving cool air in the summer months. By adjusting your return registers you can optimize the airflow throughout your home to keep temperatures comfortable for you and your family.

But will closing vents in unused rooms help cool your house better. What are the benefits. We think that by closing vents we are able to force the air to go where we want which is up. These adjustments also work to reduce energy costs as well as your energy footprint.

Homeowners typically close vents in an attempt to redirect air away from unused spaces.