Question about Maytag NMPEB08F2A Air Conditioner

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Lack of cooling

This unit was operating fine 2 days ago, but now only emits enough "cool" air for one room (whereas before, we would have to adjust it because it would get so cold). I did empty the water.

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Re: lack of cooling

Check for blocked filters or coils, both on the hot side & the cool side. It is possible that either is blocked by airbourne dust or debris. This is common in areas with lots of poplar trees.

Posted on Jul 15, 2007

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My kenmore window unit AC started blowing a white smoke like substance. It seems to be cooling fine. What is this and is it a concern?

The two things it could be, #1 - evaporator leaking refrigerant - unlikely if unit is still cooling o.k. because window units do not hold a lot of refrigerant and if there is a leak bad enough to blow smoke it would have stopped cooling by now. #2 - the humidity is high and the unit has cooled the air right at the discharge down below the dewpoint, a common occurence in window units and automobiles due to the short duct distance from the evaporator to the air outlet whereas with central air systems having longer duct systems the air gains more heat before being discharged into the room.

Aug 26, 2010 | Kenmore Air Conditioners

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Danby 12,000 BTU Portable Air Conditioner - Doesn't Cool Enough

put a xtra fan on you to blow the cooler air around. this might help. but i think you will find it is to small to cool what your trying to cool. good luck and good day

Jul 09, 2009 | Danby Portable 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:


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 | Air Conditioners

1 Answer

Danby ALSO does not cool 3 days old

Take it back where you bought it. A 12,000 BTU unit should be more than enough for a 192 square foot room, so there is some problem with the unit.

Jul 10, 2009 | Danby Portable Air Conditioner

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

Hot Upstairs

A good heating guy should be able to balance your dampers to increase the airflow upstairs. Keep in mind heat rises. 2nd floors are the hardest to cool. You may need to add more returns to pull the heat down the the evaporator so it can be cooled. If you are lucky you may be able to adjust your blower up to a higher speed. You may have to even add some more supply airs. Check with your local building inspector. He may be able to give you a list of contractors in your area that would be good for this type of problem. Good luck>>>

Apr 02, 2009 | DeLonghi Pinguino PACL90 Portable Air...

1 Answer

AC doesn't blow cold air

Threr are suppose to be two sounds comming from the window unit. One, the fan sound and the compressor sounds, (this compresses the refrigerants aove room temperatures (around 240*) & send it to the back coils and remove it to room temperatures and send it to the front coils which if enough freon, it will cool to at least 40*. Turn the thermostat all the way up or down while its off and see if you hear a clicking noise which tells you the thermostat is working which that what calls for cool. If it started loosing cools little by little, then you have a leak, and leaked all the freon out! If it stopped cooling all of once, then your compressor is not kicking in.

Jun 16, 2008 | Air Conditioners

1 Answer

Air conditioner

If the air flow is restricted or partially blocked (dirty cooling fins, filter etc), ice will form inside becaue the air stays in ithe cooling coil or fils for a long period of time. Lack of freon will not cause Ice formation because there is not enough cooling power.

May 24, 2007 | Goldstar R1003 Air Conditioner

1 Answer

Dehumidify mode also cools

Some units do cool/dehumidify only im afraid why cant you let the unit dump its hot air into the room then it wont heat or cool the room?

Sep 03, 2006 | Danby DPAC9031 Silhouette 9,000 BTU...

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