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Max size room for effective cooling?

How large of a room will this unit cool ? 8000 btu

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20 x 20 = 400 square feet

Posted on May 08, 2009

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040463610


How large a space are you hoping to cool? One room? One LARGE room? One SMALL room? One floor of a two-story house? A whole four-story house?

What's your climate like where you live? Very hot, dry, year-round? Cool most of the year but two weeks of hot during the summer? Just a little too warm in summer? Blazing hot all summer, including nighttime?

How's the insulation in the building you want to cool? Is it a plain steel building with no insulation? Is it a trailer? Is it a frame house with 4" walls and R13 fiberglass insulation? An old frame house with no insulation? An adobe building? A timberframe house with 8" of polyisocyanurate foam insulation?

All these are important to know when you select an air conditioner.

For most of the USA, assuming a frame house with 4" of fiberglass insulation, a 10,000BTU air conditioner will cool one large room or two small rooms pretty well, or a 5,000BTU AC will do one medium-sized room. Different places, and different house designs, and different types & amounts of insulation, will all have a profound effect on how much AC you need/want.

Jul 25, 2014 | Goodman Heating & Cooling

Tip

Tips on chosing air conditioners and why thy are not cooling


some one was asking why their airconditioner is not getting cold. here are soome tips.

1. low on coolant

2. tubular temperature unit is not functioning.

3. temperature of room is beyond the capacity of the unit. overworking
the unit beyond its capacity

4. a unit should be working to cool the room. It is not good for the size of the unit in btu's to be to large or too small. It is better to over work than under work an air conditioner.

on Jun 20, 2010 | Air Tools & Compressors

1 Answer

Despite waiting the 2-3hours suggested by your tech person the unit is still blowing air at 33deg C


check that it is not on heating mode
many ac units are for heating or cooling and if you have not understood the symbols correctly it could be on the heat cycle
the room is rather large so the unit should be at least 20,000 btu or 3kw unit so check the unit size
check that all doors, windows are closed for the room and if there are windows facing the sun , you will need heavy blinds or window tinting
optimal temp setting is 25 C
next check that there is gas in the unit
if you still cannot get it to cool down , call for a warranty check from your local authorized service agent

Apr 13, 2017 | Dimplex Heating & Cooling

1 Answer

I have a Maytag window unit and i am trying to find out how many btu is has. right now it is in a small room and i want to know if it will work in a bigger size room. MODEL M6Q1OF2A SERIAL CR 264327...


that is a 10000 btu unit and a good rule of thumb to go by when 'sizing' a unit is 12000 btu for every 600 sq ft of cooling space (if the place is well insulated) or 400 sq ft (if not well insulated).
So, you have a 10000 btu unit which is 5/6th of 12000 btu - so - can reasonably expect that unit to cool approximately 500 sq feet.
In other words the room it's in now could be only - say - 300 sq feet (and well insulated) - in which case the AC unit is cooling it - well.
However, if you try to cool a 800 sq ft room - it will not work as well.
Hope this has helped.

Aug 05, 2011 | Maytag M6Q10F2A Air Conditioner

1 Answer

Mitsubishi Through the Wall Unit Does Not Remove Humidity


You were told incorectly. From what you are describing the unit is oversized for your space.

All Air conditioners remove humidity. In fact the Air conditioner was invented by accedent by Mr carrier when he was trying to invent a machine to remove humidity. He discovered that by drawing air accross a cold coil the humidity drained off the coil. He also discovered that it was a mighty effective way to cool large quantities of air, and we then had "Carrier" air conditioning systems.

When a system is to large for the area it is to cool, it will cool the air in that small area so fast that the humidity starts to condense in the room before it can be pulled through the evaprator coil.

In this case, the solution would to be either replace the unit with a smaller one.
Increase the area to be cooled. (open doors to other rooms etc). or use the dehumidifier.

How many square foot is the space you are trying to cool?
What size is the AC unit? (in "tons")

Aug 25, 2009 | Mitsubishi Mr. Slim MXZ30TN Air...

4 Answers

Frigidare window air conditioner with remote control about 3 yrs old. All controls seem to be working except when the energy saver mode is suppose to shut down the unit / the display goes dark but the...


Hello, I can assist you.

If the unit is supposed to turn off and it doesn't, it will be necessary to check several things.


  • First, is the unit cooling properly? See the section entitled "The air is cool but doesn't seem cold enough."

  • Next, is the temperature of the room adequately cool? If the room temperature is cold enough try setting the thermostat to a higher temperature. If the unit then seems to work properly leave the thermostat set to the higher temperature.

  • If the unit is cooling properly when it is turned on and the room is not cool enough the problem is probably that the unit is trying to cool an area that is too large for its capacity. Use the following chart to find the appropriate size air conditioner to use:

AREA TO BE COOLED / CAPACITY (BTU/HR)

100 to 150 square feet = 5,000

150 to 250 square feet = 6,000

250 to 300 square feet = 7,000

300 to 350 square feet = 8,000

350 to 400 square feet = 9,000

400 to 450 square feet = 10,000

450 to 550 square feet = 12,000

550 to 700 square feet = 14,000

700 to 1000 square feet = 18,000

If the room is heavily shaded, reduce needed capacity by 10%

If the room receives a lot of direct sun, increase needed capacity by 10%

Add 600 Btu/Hr for each person in the room if there are more than two people

If the unit is for a kitchen, increase the capacity by 4,000-6,000 Btu/Hr.

If the room size is too big for the air conditioner you have two possible choices. Either decrease the room size by shutting some doors or partitioning off an area of the room. Or, increase the BTU of the air conditioner for that room by installing a different air conditioner with a higher BTU rating.

Aug 02, 2009 | Heating & Cooling

1 Answer

My LWHD1200FR AC Unit is not cooling during the


The unit may not be big enough. From the model number I am thinking you a/c is a 12000 btu. Which is usally enough for a large room. However if you have an open floor plan or a really large room you may need a bigger or second unit.

Jul 05, 2009 | LG LWHD1200FR Wall/Window Air Conditioner

1 Answer

Not removing humidity


Just adjust the thermostat lower or colder!

Sep 05, 2008 | Frigidaire FAH085N1T Air Conditioner

1 Answer

How large a room does a 10,000 btu air conditioner cool


What size unit do I need for my room? Use the following chart to find the appropriate size air conditioner to use:

AREA TO BE COOLED / CAPACITY (BTU/HR)

100 to 150 square feet = 5,000

150 to 250 square feet = 6,000

250 to 300 square feet = 7,000

300 to 350 square feet = 8,000

350 to 400 square feet = 9,000

400 to 450 square feet = 10,000

450 to 550 square feet = 12,000

550 to 700 square feet = 14,000

700 to 1000 square feet = 18,000

If the room is heavily shaded, reduce needed capacity by 10%

If the room receives a lot of direct sun, increase needed capacity by 10%

Add 600 Btu/Hr for each person in the room if there are more than two people

If the unit is for a kitchen, increase the capacity by 4,000-6,000 Btu/Hr.

if this helps please vote me a fix ya

Jul 21, 2008 | Heating & Cooling

1 Answer

Trru the Wall Oversized


Drop in a Frigidaire 25,000 btu, 230-volt Electronic Control Air Conditioner (Model #FAS256R2A). It is Way More Cooling than you need, but it is a very efficient unit and will provide quiet, nearly instantaneous room temprature reduction! Width 26-1/2... Height 18-5/8... Wall Sleeve Included... about $450.

Jun 23, 2008 | Frigidaire FAC124 wall/Window Air...

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