Before closing any vents in your home.
Closing air conditioning vents.
Patent 8 062 108 issued november 22 2011.
Leaking or burst ductwork.
The typical system however is far from ideal.
The belief is that closing a vent will simply push the air onward to other parts of the home improving energy efficiency.
But there are a few other important problems closing vents can cause including.
A self closing vent intended for use in attics crawl spaces joist cavities exterior walls interior walls or other structural element which allows for the free flow of air from outside a building to interior spaces during normal use.
Homeowners typically close vents in an attempt to redirect air away from unused spaces.
Closed vents increase pressure.
That means the ductwork was sized so that amount of air going into your air conditioning system equals the volume of air going out of your system.
Ensure that your ducts are properly sealed and connected.
But this is an average.
That means your home will take longer to cool down or heat up.
Environmental protection agency estimates that most homeowners lose 20 percent of the cool air they re paying for right through their home s ducts.
By closing air vents that are not being used many homeowners experience rather substantial savings on their monthly energy bills enabling them to use these savings elsewhere.
Many homes lose even more.
So we ve covered the most important problem with closing vents.
By using a variety of methods with their air duct vent covers many people are experiencing temperatures in their homes that are better than ever.
If you close off the vents in a room you throw off the intended pressure balance that your system is designed to operate under which can lead to the effects below.
Magnetically actuated auto closing air vent u s.
Other issues with closing vents.
In a well designed system the blower moves the air against a pressure that s no greater than the maximum specified by the manufacturer typically 0 5 iwc.
So when you shut some vents you are messing up the balance of your ac system.
This causes a couple of problems.
When you close vents pressure builds up in your ducts.
The ideal system also has low duct leakage.