Q. I have an air conditioning unit in the wall of my living room that has been permanently installed. What is the best way to clean it and the reusable filter? I just want to get the dust and crud out so it runs better.

A. Your best bet is to do an internet search based on the manufacturer and model of your AC unit. You may be able to find a user's manual that will tell you how to take apart the unit to clean it.

Q. Please anyone know the estimate? I have no idea and interested in getting central air conditioning system for my home...tks!

A. Trane and Carrier=You pay for advertising. I just bought a 3 ton Goodman for $1200 installed, outside unit only. Entire central air system with inside ducts, etc.: who knows.

Q. The air conditioning in our house went out over night & last time it happened (about a month ago) we changed the filter & it worked again just fine. So, we changed the air filter agian, but this time no luck. it's not sucking in air where the filters go, any suggustions -- besides calling someone over to repair?

A. Either your fan/blower isn't working, or for some reason it isn't trying to run. Check breakers, and fuses. thermostat setting.

Q. I have an outside central air conditioning unit, it is approx. 80 degrees outside and extremely humid, also very hot inside the house with fans running. The air is set to 70*, yet the air coming out of the vents feels to be room temperature and is NOT cooling the house down. Approx. two months ago, the landlord had a technician come out, and he said we had a slow freon leak, and although he filled it with freon, I was told he did not fix the leak. What is causing the air conditioner to do this? I cannot go in 100* weather without air conditioning. Any help would be appreciated :) and thanks in advance!

A. It almost sounds like the tech overcharged the unit. Either way he is supposed to fix the leak. He was not supposed to add refrigerant to a system known to be leaking. Make sure the fan is working on the outside unit. If it is not the system has no way to remove the heat from your house. Ask your landlord to call a different tech out to look at it. This guy was a fool.

Q. What is the capacity of air conditioning unit to be use when you install at specific area and equipment loads availabilities?

A. You need more info here. The answer to this question is "install one with a capacity sufficient to control the load." To determine the capacity, add up the loads, multiply by the diversity factor, and you're done.

Q. Please excuse my ignorance, but is there a portable air conditioning unit (blows out COOL AIR in a HOT ROOM) without being attached/fixed to the wall, as in carry it with you just plug it in to a wall socket and have it blow out cool air. I know this may seem like a dumb question, but a simple answer would be much appreciated. Thank you!

A. There are two units that are kind of like that, but not quite. one is called a swamp cooler. they evaporate water to absorb thermal energy in a room, but make the room more humid, and only really work in dry climates. however, they are relatively cheap to buy and use little energy. the other is a regular AC unit, but, this is not a window unit. they make one that is a free standing floor unit that can be pushed around and plugged in anywhere. however, the only downside is that there is a 3 or 4 Inch diameter hose that comes out of the back of the unit that must be run outside, through a window or a cat door or something. the unit is similar to window units in that it must move the heat from the room to the outside, but it does not have to hang out the window. they are about as expensive as regular window units. and are much more portable. you just have to point the hose outside. just remember, the heat has to go somewhere. it is very hard to just make it disappear (like an endothermic reaction, a reaction that takes heat)

Q. Well my air conditioning broke and we had some people fix it and then it broke again... every time i want it to go to a certain temperature like 75 or 74 it wont move it will stay at like 88 and the 80's and i dont have the number to my ac guy and how could i fix it... i have a digital ac thermometer thing. no the outdoor fan is not runnining

A. Don't take this personally, but if you use phrases like "digital ac thermometer thing" then you aren't qualified to repair an air conditioner. You can check simple things like the circuit breaker. But if it is tripped, it is usually for a reason. And if it trips multiple times, there definitely is a problem. If you aren't satisfied with the last co. Try another one. There are lots of companies in the yellow pages. Or ask a friend or neighbor if they know someone they can recommend.

Q. I just moved into a new home that had never had the ducts cleaned. The house is a ranch with gas forced air heat on one zone with about 9 vents. I found this company on a coupon for $45 which included unlimited vents and a couple access holes. When the company began their work they found mold and the price skyrocketed from $45 to $1400. Does this sound like a screw job or is that price accurate for mold removal and duct cleaning?

A. Mold removal/remediation is entirely different from air duct cleaning. However, it is not uncommon to find mold in your air ducts. That is why we recommend the Electro Breeze Duct Mount UV kit at http://www.allergy-relief-air-purifier.com/air-conditioning-filters.html. This unit will eliminate mold and bacteria from your indoor air and keep your air conditioning coils clean from mold. You must consider that to remove the mold from your air ducts, the air duct cleaning company is entering into a potentially dangerous situation for their employees. This requires expensive equipment and a person with the skills to do the remediation properly. Now that they have knocked the mold loose, you will need the high efficiency filtration and ultra-violet light of the Electro Breeze DMUV kit to kill and capture the mold spores in your indoor air. I hope this helps.