Seals.
A window air conditioning unit sits inside of an open window and cools the air it pulls in from the outside. The window air conditioning unit should then be sealed into the window so that the only air coming through is the air it pulls and sends out through the cooling unit. If the window doesnt have seals around its edges and theres light poking through, hot air is then able to come around the sides of the unit. Cool air may be coming through the window air conditioning unit, however, if hot air is coming through, youre not going to have a really cool home. So see to it those seals are tight. If you can see light, you need brand-new seals. Also, see to it the window air conditioning unit is sitting in the window properly, as an odd angle could also permit air to escape into your home.
Debris.
As the window air conditioning unit pulls air into your home, its also drawing in dust, pollen and other pollutants. These can often congest the window air conditioning unit, so it will have to be cleaned every now and then to make sure youre getting nothing but cold air coming through.
Sound.
If you have used your window air conditioning unit for a while, you understand what a loud noise it makes About . If it starts to make any strange noises or it gets even louder, thats a sign that something is wrong. Listen carefully to determine if its the fan or if something is possibly congesting the airways.
If your window air conditioning unit is not working properly, it would be better to get a new one instead of having a hot home or even run the risk of starting a fire. Obviously, central air conditioning would be better, but if window air conditioning is all you can afford, at least see to it its running effectively.
