Window air conditioner units must be mounted to be effective, but portable AC units do not have to be wall-mounted. However, the units should be placed near to the window for ventilation purposes. Air con units that sit on the windowsill tend to block the light. The best small portable air conditioner is one that has two hoses. These small units take up very little space and they can be mounted on a small metal wall- plate.
Portable AC units for the home come in a variety of designs and sizes. It is important to purchase a unit that suits the room size. As a rule of thumb you should allow twenty BTUs per square foot. Use this figure to work out the size of unit needed. We all want cool air, but buying a large unit could be counter-productive. Place a larger unit in a small room and the air will become cold and damp. Buy a small unit for a big room and it will take ages to cool the room effectively and you will waste a lot of valuable energy in the meanime.
It is not always viable or feasible to install a central air conditioner. If you live in an area that has short summers and long winters it will not be cost-effective to invest in an expensive cooling system that is only used for a few weeks. The portable air conditioners are a great alternative for dehumidification and cooling and these small units are easy to store away when not in use.
You will consider price and convenience when buying an air conditioner but there are others factors to take into consideration. Think about the noise-levels and find out if the filters are easy to change. Buy a unit that has user-friendly controls or you will waste lots of time trying to find out how it works. Adjustable air speed and a programmable timer are not that important but many of the best portable air conditioners are fitted with both.
The best small portable air conditioner will have an energy-star rating that minimizes energy bills. Look for the rating before buying the cooling unit because this type of air con is highly energy-efficient. These units are environmentally friendly, so your family will breathe in fresh clean air. You should ask about the kind of refrigerant used. The R22 refrigerant used to be used in these units but the EPA's Clean Air Act has phased it out.
These are useful tips that will help you to buy an air con unit that will last for the foreseeable future.