What Is A Cold Air Return


What is the point of a cold air return?

The Purpose of Your Cold Air Returns

The return registers draw stale air into the ductwork, where it's pulled through the filter to capture dust and debris and then delivered back to the HVAC equipment for reconditioning. via

Do you need a cold air return?

Cold air return vents aren't the most elegant feature in your home, but they exist for reason. These vents, commonly found in hallways or on ceilings, are absolutely essential to an air conditioner's well-being. Cold air returns take in warm air from your home's indoor spaces for use in your air conditioning system. via

What is a cold air return duct?

The answer may be your return air grills- also known as “cold air returns”. These are the vents that are usually on the wall and they do not have a control mechanism to open or shut their flow. Their purpose is to allow air to return to the furnace to be heated or cooled. It is an air inlet. via

How many cold air returns do I need?

Generally speaking, you should only need one return air vent per room in your home. However, you may need additional air vents for larger sized rooms. via

Is it bad to block cold air return?

Consequences. Restricting the airflow in the air handler or blower contributes to premature system problems, which can be serious. In the heating cycle, blocked cold air returns can cause the heat exchanger inside the blower compartment to store too much heat and eventually crack. via

Where should you put cold air returns?

Where are cold air returns located? Cold air returns are located on interior walls in a home, typically close to the floor or low on the wall. You want to make sure that cold air return vents are not blocked or covered by furniture so that your home can get proper air circulation. via

Can you close off a cold air return?

Your return vents are usually larger than your supply vents. They don't have louvers like registers do, which means you can't open and close them. If you're still not sure, hold a piece of paper up to the vent while the system is running. via

Can you put a cold air return in the floor?

An air return vent is part of the HVAC system. Return vents are usually larger than heat registers and can generally be found close to the ground or in the floor in older homes or on a wall close to a ceiling in newer homes. via

Can you put something in front of a cold air return?

Most people would tell you, no, you cannot put furniture in front of an air return vent. For example, you can't place a couch or chair or any piece of furniture that has a back into it in front of a return air vent because it will block all airflow into the return air vent. via

How do you test a cold air return?

Test Your System

Try this simple test when your HVAC system is running: get a piece of tissue paper and dangle it about six inches from one of the return vents. You should be able to see it being gently pulled towards the vent. Next, place it up against return vent and see if the air suction holds it in place. via

Why is my cold air return blowing cold air?

Explanation: Leaks in your ductwork means that cold, unconditioned air from inside your attic gets sucked into your ductwork. That cold air mixes with the warm air from your furnace, causing the air coming from your vents to feel considerably cooler than it should. via

How do you stop cold air from venting?

  • Install insulation. Poor insulation causes rapid cooling of the air as it moves through your home.
  • Check connections. Over time, the connections in your ductwork can come loose.
  • Update your HVAC. Older HVAC systems are less efficient and require more upkeep than modern models.
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    What happens if there is not enough return air?

    If there is not enough return air available, your HVAC system will not heat or cool properly. If not enough air is brought back, your HVAC system will not be able to keep up with temperature demands. In some cases, two returns may be necessary to provide enough return air. via

    How high should a cold air return be off the floor?

    In the upper stories of the house, the return air duct openings on each floor should be approximately equal to the sum of the hot air outlets. In the basement, to avoid chimney backdrafting, the return air duct should be only half as large as the sum of the hot air ducts. via

    Can you have too much cold air return?

    It isn't possible to have too many returns..... However, the blower will move only so much air. The ductwork will move only so much air. If you double the number of current openings, the total air movement at each one will be cut in half- yet the total amount of air moved remains the same in an ideal, perfect example. via

    What happens if I cover my cold air return?

    Consequences. Restricting the airflow in the air handler or blower contributes to premature system problems, which can be serious. In the heating cycle, blocked cold air returns can cause the heat exchanger inside the blower compartment to store too much heat and eventually crack. via

    Do bedrooms need return air?

    Each bedroom needs either: A return air grille ducted back to the furnace; A through-the-wall transfer grille connecting the bedroom and the adjacent hallway; or. A crossover duct (a jumper duct) connecting a ceiling grille in the bedroom with a ceiling grille in the hallway. via

    Should you put filters in cold air returns?

    Should you use a filter in your return vent? For most homes, return vents filters are suggested. They typically won't cause any damage to your HVAC system and are easy to install – there's no need for an HVAC technician. via

    Should cold air returns be up high or down low?

    For optimal efficiency, it's ideal to have return registers installed. To ensure efficiency during the cooling season, your home should have high registers. High return registers draw hot air that rises to the ceiling back into the system to repeat the cooling cycle. via

    Do you need a return in every room?

    While it is a myth that air return grilles are required in each and every room in the house, it is definitely necessary to have more than one of these grilles installed at strategic places in the house. The most important place to have these would be the bedroom. via

    How do you run a cold air return? (video)

    Should cold air returns be open or closed?

    Because hot air rises and cold air falls, you need to adjust your return vents with the seasons. In the summer, your lower vents should be closed and your upper vents should be open. In the winter, your upper vents should be closed and your lower vents should be open. via

    Should return air vents be open or closed in winter?

    Adjust Return Registers for Winter

    It's important to remember that hot air rises and cold air falls. In the winter you want the cold air to be drawn through the return registers leaving the hot air behind. By opening the lower registers and closing the top ones you keep hot air in and draw the cold air out. via

    Where is my fresh air intake?

    Typically, the fresh air intake will be located in your attic or ducted to the return side of the home's central air handler. Keep Bathroom Fans and Window Units Turned Off. Bathroom fans and window box fans commonly pull outside air into your home, so they should be shut off during a fire advisory. via

    Can two rooms share a cold air return?

    They can share the same space! If the door is under cut no return needed! If you are finishing 1000sq. via

    Does a high efficiency furnace need a cold air return?

    The architecture of high-efficiency furnaces means that they have their own fresh air intake. This means that they don't use the air inside your home; rather, they draw air from outside. However, this doesn't mean you don't need an external fresh air intake because you've installed a 90% furnace. via

    What does a return vent look like?

    You can identify return vents by turning on the system fan and holding your hand or a piece of paper up. If the paper is pulled toward the vent or you feel a suction effect, it's a return vent. via

    Do cold air returns need to be insulated?

    Return air ducts only need to be insulated if they pass through environments that adversely affect the return air temperature. Insulation prevents condensation and dripping from ducts. Un-insulated cold air ducts very often have surface temperatures below the local dew point. via

    What temperature should my car AC be blowing?

    Temperature should be 40 to 42 deg F. Higher fan speeds, resulting in high air volume, will result in higher vent temps. Rear cabin systems are normally 10 degrees warmer because they have a larger volume of space to cool. via

    How do you tell if a duct is blocked?

    You can generally identify a blocked air duct by a distinct drop in heating and cooling efficiency, increased energy costs and occasionally a musty, dusty smell throughout the home. Blockage usually comes over time, by a buildup of dust and debris that just accumulates until it begins choking the system. via

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