our two outdoor AC units are tilting/settling - pix posted at site-how to proceed?

wife and I are in our 3 yr old 'new' 2 story, '2 zone' house. our two outdoor AC units (condensers? evaporators? I forget what they're called) are continuing to "lean" like the leaning tower of pisa...I'd like to fix this, & have some ideas, but I'm WIDE open to other suggestions. please see images of 'the situation' we got at
http://members.cox.net/machines/slanty/index.html
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to reply, please remove the "weird stuff" from my email address. thanks.

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I think a bigger priority should be getting your lawn mower fixed.........
;-]
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Roundup is good for grass kill.
So ,,, Get a crow bar and wood and lift and throw in fill. Whats the big deal.
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Paint the house to.
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"dave"wrote

Nevermind the other remarks. On the serious side, Gremlins often push up the pad, they think it's a hatch when tunneling. A side note: Keeping your yard mowed hinders Gremlins.
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What the ^%$&% is that on top of the units?

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They just threw a couple precast pads down on the loose dirt when they installed those puppies, didn't they? Now from rain/frost heave/vibration when the units are run, the things keep shifting on you. Cheap solution- soak the ground till the pads level and stabilize, and then stuff 4 bricks under each box to keep it up out of the weeds. Correct solution- evac system, have units disconnected and moved out of way, and pour a proper pad over gravel base, or at least dig out and put gravel under the cheap precast pads so they aren't floating so much.
By the way- those home-made leaf guards block a lot of air, and are costing you money and operating efficency. I'd leave them off till leaf-dropping season starts.
aem sends....
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Yep, I built a removeable gable roof - goes on after cooling season (that is well before leaf drop) and comes off at first call for cooling in spring. Due the usual cleaning each spring.
Harry K
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What are the screens on top of the units for? Seems like a big air flow restriction!
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My boss just bought a new home this year (over $300k), and they set his condensor on a hollow shell of cheap plastic that looked like a cement pad, until his lawn service took a chunk out of it. The property was apparently filled in and is sinking around the sump pump discharge (not aligned with drain) and also sinking rear patio that cracked and sloped more than intended. It looks like chimpanzees did the caulking, fortunately it matches the color of the plastic siding.
Even a cement pad may heave some every winter if it does not extend down past the frost line. Although, at least a proper sand and gravel base (proper drainage) under a shallower pad can help.
We noticed that his neighbor's condensor is mounted on angle iron, with proper angled supports, anchored to the foundation wall.
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David Efflandt - All spam ignored http://www.de-srv.com /

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dave wrote:

stone instead of pouring the concete into a pad to place the a/c unit on( its the condenser unit that is in the outside...the evaporator is in the attic).... i had my single a/c system, 3 tons moved about 6 ft. and we poured a new concrete pad.. maybe you need to do this and make it higher when you do...
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Place spirit level on top. Lift side of pad. Cram dirt under side you lifted. Recheck level.
Repeat as needed.
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Christopher A. Young
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