To give you an idea older less efficient mini split air conditioning systems have a seer rating of around 8 to 10.
Low power window air conditioner.
If you have a window air conditioner running in a room that has a separate open window or door leading out to the rest of the house then the unit must work harder to cool the room.
The more sealed the area is the less your window ac unit has to work because the air conditioned air is contained.
This compact window mounted air conditioner boasts 8 000 btus of cooling power that is suitable for use in spaces up to 350 square feet in size and can dehumidify up to 1 7 pints per hour.
Although the unit is affordable its low price point should not be mistaken for sub par quality.
At 13 x18 this sleek frigidaire air conditioner is compact enough to fit in even those tiny third floor walkup windows but still offers 8 000 btus of cooling power to keep a 350 square foot.
And it costs more than four times an equivallent 120 vac.
The power consumption of 9 000 btu air conditioner units ranges from 800 900 watts if a 9 000 btu a c unit consumes more than 900 watts it is inefficient and you should look for a better model.
For heating and cooling i opted for the fujitsu 9rls2 which is a 9 000 btu ductless mini split air conditioner heat pump system with a seer seasonal energy efficiency ratio rating of 27.
Choosing between a small window air conditioner or a larger model comes down to the size of the space you want to cool.
Anyone wishing to cool their house with solar power would have a solar panel system feeding their entire house including the 240 vac central air conditioning system for maximum efficiency in air distribution.
Cooling capacities are typically stated in terms of btu rating which is a number that essentially tells you how quickly and energy efficiently a unit can cool a room.
Also called the mini room air conditioner this type of air conditioner has around 5 000 to 6 000 british thermal unit btu that perfectly cooling and humidify dry air your room spaces of up to 450 square feet.
It also offers low power startup quiet operation and effortless restart for added convenience.
There is the so called smallest window air conditioner that is just as powerful as its bigger counterpart.
The unit also features a 12 1 eer rating and is energy star qualified for added efficiency.
9 000 btu a c units are recommended for rooms that are 350 400 square feet this average applies to both window and split units.