A heater makes a room warmer by convection currents . The cold air comes down to get heat from heater and warm air (convection currents) lifts up in the room . If heater is placed at a height , then cold air below this height will not be heated by heater therefore it is installed near he floor of room.
Because heat tends to rise (by convection) in gases and liquids, so having the heating element at the bottom of a container is conducive to distributing the heat more evenly throughout the substance being heated.
The short answer is that heat rises. Cold air sinks. So by heating the cold air at the bottom it is more efficient and creates an updraft and circulates the air better than if it were heated at the top.
Heat Loss/Gain: Ducts in the ceiling can lead to greater heat loss in winter and heat gain in summer, especially if they are not well insulated. This can result in higher energy costs and reduced efficiency of the HVAC system.
Flexi Says: This is an example of convection. Warm air rises because it is less dense than cooler air. This creates a convection current, with warm air rising towards the ceiling and cooler air sinking towards the floor.
Floor vents are especially advantageous in colder climates. Since warm air naturally rises, these vents ensure that heat disperses evenly, creating a comfortable environment without energy waste. Floor vents are ideal for bedrooms, living areas, and spaces that need targeted heating.
A frequently reported cause for this is improper airflow balance. The ducts may not be the correct size or configuration, which results in an uneven distribution of air between the floors. This can cause more warm air to go downstairs, causing insufficient airflow—which is the heated air—on the higher floors.
Ceiling vents do a better job cooling and floor vents do a better job heating. If your priority is cooling, put your HVAC in the attic and ducting and heating vents in the ceiling. If you prioritize heating, put the HVAC and vents in (or below) the floor. This principle works for return heating vents as well.
Geographic Location. Both ceiling and floor ducts supply warm or cooled air. But considering the fact that heat tends to rise while cool air sinks, floor ducts are preferred in places where heating needs prevail. That's because after they deliver heat at the floor level, the air rises and warms the rest of your room.
What is the disadvantage in having ducts in the ceiling? One of the disadvantages to having ducts in your ceiling is that the ducts may be in the way of insulation leading to a less insulated home. This isn't an issue in warmer climates but in parts of the world where winter is cold this is a concern.
A heater makes a room warmer by convection currents . The cold air comes down to get heat from heater and warm air (convection currents) lifts up in the room . If heater is placed at a height , then cold air below this height will not be heated by heater therefore it is installed near he floor of room.
The CPSC calls it the “3-foot rule,” and it's pretty simple: Avoid placing a space heater within 3 feet of anything flammable. Some manuals list curtains, papers, furniture, pillows, and bedding as objects to stay away from.
Home > Why Are Air Conditioners Placed At A Height Near The Ceiling? The reason behind placing these appliances at a height near the ceiling is that they remove heat from the room through their cooling coils and exhaust hot air out of the room through their upper vent/outlet.
Since the heater warms the air surrounding it, all the hot air will move upwards from that height itself and we will not feel the hot air. Therefore the heaters are placed near the floor such that the hot air rises from the bottom itself and warms the entire room uniformly.
Answer: HEATER is placed near the floor because hot air rises up and the room will be heatness will spread even. The density of air depends upon the temperature. If the density of air is high then it will settle in the bottom and if it is less dense and it will move upwards.
Heat entering through ceiling ducts, however, naturally tends to accumulate at the ceiling, warming the room from top to bottom more slowly than floor ducts. In climates where heating is the predominant HVAC function, floor ducts are usually preferable.
When vents are placed near the ceiling, air is able to more freely circulate throughout the room. Furniture is also less likely to obstruct the flow of air. This allows your home's heating and cooling system to make each space more comfortable while improving your energy efficiency along the way.
Explanation: The reason heating vents are usually placed on the floor of a home is an example of natural convection. In a heating system, the air is heated by a furnace and expands, forming a convective loop. As the heated air cools at the ceiling and outside walls, it becomes denser and sinks to the floor.
The heater is placed near the floor because the air currents move upwards so the hot air fills up the whole room. Whereas, an air conditioner is placed near the ceiling because the cold breeze tends to settle down. If it is placed near the floor then it will fill just the bottom of the room with cool air.
It is a common myth amongst homeowners that closing air vents saves energy and makes the home more comfortable. Many think that by closing cold air returns, the conditioned air is redirected to other areas that the homeowners want, but closing air vents in vacant rooms is far from helpful.
If you remember basic science, you'll know that hot air rises, and cold air sinks, making ceiling vents the delivery location of choice for places that often experience warmth and humidity. In these cases, where cooling is required throughout many months of the year, ceilings are often the choice location.
Similarly, during the winter, you should set the bottom floor to the temperature you want and the top floor two degrees lower. The warm air from the bottom floor will rise, equalizing the temperatures on both stories.
Hot air rises, and heat naturally moves toward cold spots. So, you have warmth moving from the first floor to the second (or third). But there's a whole lot of cold air just above the roof. So, that warmth finds any way possible out of your home to the cold air outside.