I just bought a 9000 BTU flooring standing air conditioner. How long does it take to cool down a room?

Question

Specifically a 350 square foot room. I set the "auto" setting for 74° and it ran all day and now it still says that it is still 84° in here. The A/C unit is blowing out ice cold air.

Answer 1

a 350 square foot room is a room 10 x 35   a 9,000 BTU cant cool a room that size.   where does the heat from the air conditioner go if it's sitting in the room?

i doubt that a 20,000 BTU air conditioner could cool a room that size.

Answer 2

HVAC Tech. YOUR 9000 BTU unit is less than half what you need to cool a room that size. Your heat gain in that room must be intense! What room in the house is it? How high is the ceiling in that room?

Answer 3

Is the room completely closed off, as in the doors being closed?  How airtight is the room?  Did you seal up around the outbound duct really well?

It shouldn't have taken more than a few hours for the room to be down to 74, esp with a 9000 BTU unit.   There's something not quite right so you need to investigate big time.

Let us know how things go and what you find, huh?

Answer 4

There are a number of factors that can affect the cooling requirements of a room.  Obviously the square footage of the room, and the height of the ceiling.  But bigger factors are; the windows in the room and whether they have shades or not.   The lighting in the room.  The number of people in the room.  Equipment in the room, i.e. computers give off alot of heat,  so do plasma TV's.  350 ft^2 alone requires 13,000 BTU's not taking other factors into account.

Answer 5

Your  AC  9000 BTU should cool your 350 sq, ft. room .  8000 BTU is rated to cool 340 sq. ft. and 10000 BTU is rated to cool 450 sq. ft. room.  It will take some time to cool room at you are using it close, to the maximum rating.  I would turn on before room gets to hot.  It should be pulling only about 8 or 9 Amps. So it not be that expensive to run.  See your AC rateing below

Good Luck

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