If you haven't had this noise in the past,it could be a compressor on it's last leg as there isn't much else in these units that make noises like that.Have it checked.Compressors quite often carry a five year warranty and die prematurely.If ,in fact,the warranty has run out,then you may wish to have all your problems solved by installing a new unit.Start researching options while it still works!

[This message has been edited by Matches (edited June 28, 2001).]

Thanks for the advice! What are the two best A/C and heating units out there? Should I continue with a heating strip or is a heat pump a better way to go? I'm a new home owner and a single female, and frankly, HVAC systems aren't my area of expertise, so any advice would be appreciated!

Thanks!

Check this site for information on Air conditioners. http://www.acdoctor.com/default.htm

Good Luck.

About the loud noise when the unit turns on (not the continuous noise when it's running)- - Where does it occur - outside at the compressor unit or inside in the area of the blower. It could make a big difference which is which.

Find an AC contractor in your area,either working in the neighborhood or by referal.They work on these and know which ones present problems or are hard to get repair parts for.I would still have your current one checked,and tell the technician it has required recharging twice.Don't be suprised if he tells you to get a new one.

rpxlpx,

The described noise happens when it clicks on, but the overall running noise is just loud.

I've heard that Trane is the best? Is that true? Also, since everyone seems to think I need to replace it, how much do they cost on average?

Hi Kimber,
My question wasn't WHEN does the noise happen but - WHERE does it happen?
(Sounds like you've just about decided to replace, so it won't matter in that case.)
Some thoughts:
1) The loud initial noise could be something insignificant, like the duct flexing. That's why I asked "WHERE is the noise?".
2) The outside noise will be there with another unit - maybe not as loud, but you'll find your patio not very pleasant when it 's running in any case.
3) The need for recharging this unit could be a tiny leak that's fixable.
With all that in mind, I think you should follow Matches' advice and have the unit checked out by a different technician. Be sure to tell him about the recharging.

rpxlpx,

Oops!...sorry, guess I didn't read your post correctly!

The noise definitely sounds like it comes from the unit outside (the compressor?...big,square green metal box-thing with a fan in it that sits on the ground?) and with hoses/ducts connected which run up the side of my house to the attic.

In the attic, is a big silver rectangle thing that has a drip pan underneath, then more duct work connected that goes to the vents throughout my house.

Okay, stop laughing at how ignorant I sound!

HKestenholz and others:

Thanks for the clarity and the advice!