We’ve all seen it in nearly every home we walk into – the heater placed under the window. It’s a very common sight in winter months when temperatures are below zero degrees Celsius, but why do people have it there? What makes them put their heaters in this specific position?
There are a variety of reasons why heaters are placed under windows. The first is to prevent the buildup of moisture from condensation which can lead to mold and mildew.
Another reason is that placing them there ensures they will not overheat a room, which could be potentially dangerous if it results in a fire or burns down your house.
One last reason is that this placement allows for better air circulation around the heater due to less resistance from the window frame and glass surface.
The placement of your heater is critical to its effectiveness.
Placing it under the window will help you use less energy by trapping heat in your room instead of letting it escape out the window. This is because air rises and the coldest spot of your home will be under a window. It goes without saying that “the colder it gets outside, the more heat you lose through those windows.”
Other benefits of putting heaters under windows
Heat rises so placing a heater by the window will help trap warm air inside of your home during the winter months or cool air during summer months when temperatures rise outside. This also ensures maximum room comfort throughout seasons where there might be drastic temperature changes from day to night, meaning less energy use overall.
By keeping cold drafts out and trapping warmth inside, using just one heater can make all the difference in heating your entire room.

Heaters under the windows also help to keep the window from fogging up. A window covered in condensation does not allow for an optimal view outside.
Another benefit of keeping your windows fog-free by using a heater is that it helps to reduce the amount of work required after snowing or rainfall, as you won’t need to clean up water on your window glass which can lead to ice buildup and annoyance further along into winter months.
Keeping your heater in this particular position is also great for keeping it out of reach from children and pets who may knock them over by accident or play with the switches, especially in winter months when they are more tempted to touch things that are warm.
Additional tips for placing heaters under windows
Aluminum foil is a great addition to any heater to help it work even harder and trap more heat inside the room. To use aluminum foil, measure the size of your heat and cut the aluminum foil to size. You then need to fold the foil over itself several times to create a thicker barrier. Make sure you do not have any sharp edges.

The aluminum foil should be placed on the wall behind your heater, facing inward towards the room you are heating up. This works great in reflecting heat back into the room and will heat up walls more than usual.
A second tip is to make sure your heater is on castor wheels and not on carpeting as this can cause it to trap odors inside of it, even after you turn off the device.
Don’t forget about ventilation when using aluminum foil under heaters trying to keep warm rooms cozy during winter months. This will help prevent mold from growing inside of your home because of the heat.
How does aluminium foil keep things warm?
Aluminum foil is a fantastic and inexpensive way to keep things warm for hours. Emergency services usually rely on it when trying to keep casualties warm.
Aluminum has high thermal conductivity, meaning it will transfer heat very quickly. The foil reflects the heat from your heaters to keep your home warm during winter months when outside temperatures are low and you need all of the help that you can get.
Aluminum is also good for keeping leftovers hot for hours after cooking them. You can even make an oven-safe pouch out of aluminum foil by folding two sheets together and twisting the ends shut, then place your food inside before baking.