In the picture you can see the cold air return close to the ceiling.
Hvac cold air return placement in floor.
In some installations a central return duct and grill is installed in a central location to reduce cost this has become the norm but is only to save costs.
That means the space between two wall studs.
Only if you don t have enough supply air to those rooms.
4 there will not be enough mixing of air so the hvac would have to run a lot more and hence more utility bills.
If the supply ducts are high or in the ceiling then the return air ducts or grills should be low on a wall.
Place your cold air return vents on the inside walls of buildings at the lowest point.
Some systems have two sets of return vents one up high for warm air and one low to the floor for cool air.
If you are in the far north or in the southern us the answer is simple.
He shows us how to measure the location cut the dry wall and install the vent.
Unlike supply vents return vents do not need to be cased in metal.
Sometimes vents get blocked by rugs couches or the like.
2 the summers will be warmer on the main floor because the returns are at floor level cold air at floor level goes back instead of hot air at ceiling no the second floor is cooled so the ceiling of the first floor won t be hot.
3 the winters on the 2nd floor will be cold as the returns take the hot air back.
If you have this type of air return system in your home then you can have a vent at the ceiling and at the floor.
By code building cavities used for air return can only convey air from one floor level back to the hvac blower 2006 and 2009 irc m1601 1 1 7.
In general you want your hvac system to have about as much return capacity as supply capacity.
Yes add at least 1 return at or near the floor in the wall.
Try to avoid doing this to your vents as it will reduce their efficiency.
If the supply ducts are in the floor then the return air should be located up high.
In an air conditioning climate the return duct goes near the ceiling to draw off the hot air and cool it down.
Dave shows us how to add a hvac return air duct vent.
This pulls the air across your body.
In most homes the builders will use the wall cavity as a cold air return.
In a heating climate the return duct goes near the floor to draw off the cold air and heat it up.
Yet field measurements in typical homes indicate that second floor return air ducts relying on building cavities for air transport are often so leaky that they returned little air to the hvac blower.
A return draws air into a return duct system with negative pressure compared to the space usually via a fixed grille but also often called a return vent or a return intake vent or for some of you old school folks from up north the cold air return.
The problem comes when you use both heating and air conditioning.