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Old 07-13-06, 03:41 AM   #1
Aphex Twin
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Air conditioner in home works, but does not blow cold air...what's the prob?

I don't know much about A/Cs. The A/C in our home works and the fan blows, but it does not chill the house like it's supposed to...no cold air and the temp stays the same after hours of being on. I want to be informed when I call a A/C repairman, so I want to know what the problem is to tell them to fix and not be ripped off for unnecessary services. Is it like a car's A/C system where it just needs freon to be added?
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Old 07-13-06, 07:41 AM   #2
roger_d
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Yes it sounds like you need freon. Yes it's the same with a car A/C.
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Old 07-13-06, 07:42 AM   #3
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See if the compressor (outdoor unit) is running, if not look for a tripped breaker (might be one near the unit, as well as one in breaker box), if not tripped probably bad capacitor or motor. If it is running, make sure it's not frozen over (if so let it thaw out), or may have a hole in the line/need refrigerant.
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Old 07-13-06, 08:10 AM   #4
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We had the same issue, and it was the freon. New place, so we just think they never charged it to begin with.
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Old 07-13-06, 08:12 AM   #5
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How much does it cost to recharge an air conditioner? I have one that's not blowing much cold air these days.
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Old 07-13-06, 08:12 AM   #6
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I work for an A/C company. It sounds like it's in need of freon, but one of your coils could be leaking the freon. An A/C company could come out and put freon in it, but to search for a leak it will cost more. It's up to you.
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Old 07-13-06, 08:14 AM   #7
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How old is the unit?
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Old 07-13-06, 08:19 AM   #8
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If it ever worked, it had freon once.

If it needs freon now, it has a leak. The leak may be slow enough it would work for a while, but a leak should be fixed.
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Old 07-13-06, 08:19 AM   #9
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So freaon doesn't just dissipate over time unless there's a leak? Good to know.
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Old 07-13-06, 09:06 AM   #10
Palaver
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Quote:
Originally Posted by Bandoman
So freaon doesn't just dissipate over time unless there's a leak? Good to know.
Good question. Does freon last forever or does it need to be replaced from time to time?
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Old 07-13-06, 09:10 AM   #11
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it's supposed to be a sealed system. so it should be there until it leaks out.
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Old 07-13-06, 11:39 AM   #12
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It could also be that the temperature gauge is broken. We just bought a window mounted ac and it wasn't blowing cold air. Brought it back, they fixed it, and it chills just fine now.
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Old 07-13-06, 11:48 AM   #13
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My work sells freon (12 oz and 30lbs), I warn you that they aren't cheap. However, freon does dissipate, you will have to get refill - but check for leak to make sure.
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Old 07-13-06, 01:46 PM   #14
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A good system shouldn't leak. When was the last time you added freon to your refrigerator?

The sleazy fix is to keep recharging the system. It's like putting a quart of oil in your car every hundred miles. It keeps things running, but it's hard on the environment. Also, freon costs a whole lot more than oil. Your best solution is to repair or replace.

Other things to check: Can you hear the compressor running? Is the compressor iced up? Does is blow hot and cold? Is your thermostat working properly?
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Old 07-13-06, 02:05 PM   #15
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It is a centralized A/C. There are seperate controls for the 1st and the 2nd floor of the house. It is a house that was built in about 2000, so it should be no older than 7 years old.

When the A/C is on, it is pretty loud, I think louder than usual. The sound is kinda like a hard blowing sound for about a second, and then interupted, and then another hard blowing sound and this pattern is consistent. I think the heater does work properly, last we used it.
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Old 07-13-06, 02:16 PM   #16
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Quote:
Originally Posted by Aphex Twin
I don't know much about A/Cs. The A/C in our home works and the fan blows, but it does not chill the house like it's supposed to...no cold air and the temp stays the same after hours of being on.
I'm no A/C expert either. But I'd venture a guess that your A/C does NOT work.
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Old 07-13-06, 02:18 PM   #17
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Similar situation, air unit was not blowing cold air. I was informed that the compressor went and since it was old (17 yrs) it was best to replace. The unit with the furnace was replaced too, as mentioned in this thread it should be a sealed system. I always thought coolant had to be added from time-to-time because that's how my parent's system worked. New unit is a Trane (old unit was too), works greats and has been pretty energy efficient so far -- and it is Puron compliant too!

Last edited by wishbone; 07-13-06 at 02:31 PM.
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