![]() Therefore, you don’t have to worry about losing the conditioned air via the upper vents. Remember that cold air is dense and thus remains close to the floor. Yes, upper return vents should be open to allow the rising warm air out of the house. This shouldn’t be a big problem as return vents are typically very high, close to the ceiling, or very low, close to the floor. ![]() First, you want to close all the wall vents to the ceiling. So, you need a way to let the hot indoor air naturally escape from the house while retaining cold, conditioned air. The reason is that hot air rises, and summer is a hot season. However, the roles are switched in winter keep the lower vents open and the upper vents closed.Īl high vents should be open during the summer. Your lower return air vents should be closed in the summer while the upper vents remain open. Which Vents Should be Open in the Summer? To this end, it’s best to leave open all the vents that promote maximum airflow and energy utilization while closing those that don’t. Leaving open vents that would allow conditioned air to escape the house doesnt make much sense, does it? However, it depends on the vent location. Ideally, you want the vents open in the summer, as we’ve already mentioned. Should Vents be Open or Closed in the Summer? The bottom line is that the vents should be appropriately adjusted before turning on the air conditioner or furnace for the summer or winter. The best time to switch the vents is on the first day of heating or cooling, though you can always do it a few days earlier, so you don’t forget. Opening or closing various air vents in the home to capitalize on the air movements can help you keep your home more comfortable without necessarily spending more on energy. Therefore, indoor air generally rises during the summer while cold air from the air conditioner falls. For this reason, hot rises to the ceiling while cold air settles to the floor. However, the opposite is true for colder-than-standard air. Thus, hot air is less dense than standard-temperature air. The law states that hot air is less dense because the same mass of air acquires a larger volume as it expands. Seasonal switching is the best approach because it allows you to capitalize on Charles’s Law on the relationship between temperature and density in gases. Why you should Switch your Vents Seasonally Otherwise, keeping them open can only worsen your energy inefficiency issues by allowing conditioned air to escape from the house.Īdditionally, closing some vents may prevent stale air from leaving the house, thus reversing your air conditioning gains.Īs a result, it makes the most sense to shut some vents while keeping others open, depending on the year. That said, though, keeping the vents open all the time only works perfectly if the vents are located correctly. It costs $3,500 or more to replace the outdoor unit. A frozen condenser coil, ultimately destroying the AC outdoor unit. Moreover, closing the air vents can cause issues such as frozen condenser coils. You should always keep your air vents open if you want a healthy air conditioner, a comfortable home, and reasonable power bills. Read on to learn which vents should be open in the summer and which ones should be shut and how to close your vents and adjust your dampers to control airflow in the home. For instance, you should make it easier for hot indoor air to escape the home and reenter the AC by placing return vents close to the ceiling. To this end, you must seasonally adjust your air vents to correspond with the changing outdoor temperatures. Therefore, during natural convection, hot air rises while cold air sinks. The basic law of convection tells us that hot air is light while cold air is denser.
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