How do you run ductwork in a basement?

How to Install Basement Ductwork

  1. Create a Floor Plan. Draw a rough overhead floor plan of the house using pencil and paper. …
  2. Map Out a Route. …
  3. Take Your Measurements. …
  4. Connect Sheet Metal Ductwork. …
  5. Anchor the Ductwork in Place. …
  6. Work Around Bends. …
  7. Install the Return Ductwork. …
  8. Test the Unit.





Should return air vents be high or 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.

How do I redirect my HVAC vents?

When it comes to accurately redirecting vents, a vent deflector is an ideal choice. Place it over the vent to guide air away from a wall, window treatment or other surface and toward the center of the room. A vent extender, on the other hand, helps move more air out from a vent that’s under a piece of furniture.

Where should a return air vent be located?

Return air vents are generally located near the center of the homes. Older and newer homes often have one register per floor, but homes built from 1960-1990 may have a cold return air vent in each room.

Where should vents be placed in a room?





Registers should be placed in the middle of the external wall (in the floor or low on the wall); if there are two external walls, both need registers in the middle. (If the room is tiny, one duct may work, even if there are two external walls.) Basic Rule No.

Can I add a vent to existing ductwork?

Yes, it’s quite possible to add a vent into the existing ductwork. But, you’ll need to check the compatibility of the AC and heater. After this, locate spots and mark them. Then, cut the piece and add the vent cover after ensuring the right fit.

Which way do cold air vents go?

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. Since cold air is heavy it will automatically flow down to the lower register.

Does each room need a return vent?

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.

Where do you put cold air return vents?



The Location of Cold Air Return Vents

  1. Examine your home heating system. …
  2. Place your cold air return vents on the inside walls of buildings at the lowest point. …
  3. Place the vent at least 10 feet away from a thermostat, because the cold air draft may cause incorrect temperature readings.

How do you run a cold air return?

Quote from the video:
Quote from Youtube video: When you're cutting through we're doing joint material with ducting or anything like that it's a good idea to use a tin foil tape foil tape seals all air gaps.

Can you have too many return air vents?

Having several return vents (ideally one in every room, but even two or three is better than just one) creates consistent air pressure. If you have one return vent, your home is fine. Keep the doors to each room open so air can properly circulate.

What size should a cold air return be?



There usually are fewer return vents, but they are much larger. A typical supply vent is 4 by 10 to 12 inches and a typical return vent is 16 by 20 inches or larger. Houses often have two or more return collecting points, each with a filter, which join before re-entering the heating unit.

Is flex duct better than hard duct?

Flex ducts are better for existing trunk-and-branch heating and cooling systems. This is because they’re more versatile and flexible. Metal ducts are more rigid due to the nature of steel, making them ideal to build an entire HVAC system.

Why are cold air returns near the ceiling?

In an air conditioning climate the return duct goes near the ceiling to draw off the hot air and cool it down. In a heating climate, the return duct goes near the floor to draw off the cold air and heat it up.

What happens if there is not enough return air?

If there is not enough air coming from the return vents (problems with exhaling), you will have problems with the air supply as well (problems with inhaling). You will practically see this insufficient ‘breathing’ as: Air conditioner blowing warm air (in the summer). Furnace blowing cool air (in the winter).

How do I increase the airflow in a room?



Homeowners that want to get more air in the individual room have probably already checked if the filters are dirty:

  1. If you want to increase airflow to one room, the first thing to do is to check if the air filters are clean.
  2. If you want to increase airflow, you usually have to install larger vents.

Do cold air returns have ductwork?

When warm air is delivered to a room, the existing cold air in that room is pushed into the cold air returns. Once inside your cold air returns, that air travels through your ductwork back to your furnace where it is filtered, heated and sent back to warm your home.

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.

Can you place furniture in front of a cold air return?

Home Inspection Insider explains that an air return vent needs 6-12 inches of space in front of it, and recommends that you do not put large, bulky furniture like couches and bookshelves in front of an air return vent.