Question - Which way should supply air vents face?

Answered by: Lawrence Powell  |  Category: General  |  Last Updated: 22-06-2022  |  Views: 1334  |  Total Questions: 14

The supply vents should blow on the outside walls. In the summer, the cool air your AC is producing blows on the outside wall and absorbs heat as it comes into the house. In the winter, the warm air your furnace produces blows on the outside wall at the point of where you`re losing the heat from your house. Supply register vents should be in every room as well. Located on the outer walls, under windows, in the ceiling, or on the floor, placement depends on the heating or cooling system as well as the construction of the home. Supply vents help change the room temperature to your desired heat or cool setting. A downward direction is preferred more, as air always rises up after collecting heat from below. The velocity of air will have to be low and linear by the time it reaches occupants. If your goal is to direct the airflow more precisely, vent deflectors are a better choice. Directing airflow away from curtains, plants, and equipment to prevent disruptive breezes. Directing airflow away from walls and furniture, and toward the center of the room to provide more even temperatures.

https://www.dummies.com/home-garden/interiors/ventilation/how-to-balance-your-central-heating-system

Here's how to balance your central heating system: Start at the furnace unit and follow the main ducts outward, looking for small levers on the side; these are the handles for dampers. Place thermometers in the rooms in question, away from registers and cold-air returns, and all at about the same height from the floor.

https://www.aireserv.com/about/blog/2017/june/quickly-cool-your-house-if-your-ac-breaks/

Quickly Cool Your House If Your AC Breaks Cool the Room with Fans. Running a fan is one of the most convenient and effective ways to keep a room cool in summer without AC. Cool Yourself Down. Cool the Room with Ice. Reduce Heat Coming in from Outside. Reduce Heat Generated Inside the House. Schedule AC Repair & Replacement Services.

https://www.quora.com/Why-are-heating-vents-so-often-placed-in-front-of-windows

Why are heating vents so often placed in front of windows? Also, the windows are the source of the greatest amount of heat loss in a room. Cold air sinks to the floor and makes for uncomfortable, cool spots in the room. Having the heating vents under the windows counteracts the movement of the cold air to the floor.

https://diy.stackexchange.com/questions/12325/why-are-almost-all-of-my-houses-hvac-floor-registers-p

Window glass is the coldest part of a wall. When warm room air hits it, the air cools, and cool air sinks. The placement of forced-air heat registers or baseboard heating units under the windows counteracts this process by sending up warm air to mix with the cool. The end result is that the room feels more comfortable.

https://aplusairconditioning.com/purpose-ac-return-air-vent/

An air conditioner works by absorbing the warm air and moisture from your home. Once the dampness is separated from the air, your AC unit cools the warm air, and sends it back into your home through the return air vents. Despite their name, it's also through these outlets that the air conditioner takes in air.

The Case for a Return Duct Filter Regular maintenance is certainly recommended, but adding a return air filter can help to block some of this incoming debris and ensure that the air coming in is clean. Clean air means a clean system.

https://ventandcover.com/blog/what-is-the-difference-between-a-register-a-grille-and-an-air-return/

Heat registers are vent covers that cover the hole in the wall or floor where the duct enters the room. Louvres, or dampers, are often attached to the back of a heat register. A grille has no damper to control air flow, so air is left to flow freely. Grilles do not have the damper normally found on registers.

https://www.quora.com/At-what-direction-should-I-point-my-air-conditioning-vent-to-cool-my-room-fast

As cold air wants to go down (it's heavier than warm air), pointing it up will “throw” it further, thus getting more cold-work done. This will then remove heat from as much as the room as possible, and this - in the end - will turn out to give you a better indoor temperature, faster.

https://www.quora.com/What-is-the-difference-between-VAV-diffusers-and-grilles-in-HVAC

grills are static and have a fixed openings, the volume is constant as long as the fan volume is constant. A diffuser is "a device for reducing the velocity and increasing the static pressure of a fluid passing through a system”.

https://www.servicechampions.net/blog/3-simple-ways-to-improve-your-furnaces-airflow-for-more-comfor

3 Simple Ways to Improve Your Furnace's Airflow for More Comfort Unblock and clean your vents. Here's a super easy way to increase air flow. Change your filters and clean your return grill. A dirty air filter impedes air movement and makes it hard for your furnace to work efficiently. Seal leaky ductwork. Snap on some goggles and a dust mask, it's time to check out your air ducts.

https://woodscomfortsystems.com/articles/issues-caused-closing-vents-unused-rooms

Closing the vents doesn't do it any favors. In fact, instead of helping the air conditioner cool less, closed registers force the same amount of air through other ducts. This builds pressure in the system and makes your HVAC system work harder to distribute the air where you need it.

https://www.wahlheatingandcooling.com/our-blog/2017/october/why-you-shouldnt-cover-your-air-vents/

You could mess with the air flow. Just because you cover the vent, it doesn't mean your HVAC system knows that. It will keep pushing air to those vents, and if they're closed, you could cause a buildup of air pressure and insufficient airflow which could damage your system.

https://joneakes.com/jons-fixit-database/1301-Should-cold-air-returns-be-on-the-ceiling-or-on-the-fl

If you are in the far north, or in the Southern US, the answer is simple. 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.

Floor Ducts Heated air is less dense than cold air. That's why heat rises. Floor ducts are effective because they deliver heated air at floor level. Floor vents are typically used in homes where the furnace is in a basement or the ducts (the piping from the furnace) travel through an underground crawlspace.