We have 3 A/C units outside on a slab at the back of the house, built 5
years ago. We have just replaced our 2nd compressor of the 3. The tech
told us that the units are installed flush on the slab, and that has
caused water to not be able to drain properly, causing the coils to all
show extreme signs of rust. He showed us there are some "weep holes" that
are essentially plugged by the slab.
I've called the original installation guys, but they can't tell me if
these units were supposed to be raised off the slab or not. I've looked
at the installation guide, and it looks like the units did in fact come
with feet that would have raised the units a couple of inches off the slab.
In addition, the slab isn't sloped correctly (maybe it has shifted in the
past years), and does not drain as well as it should.
So, in general, are these units supposed to be raised off the ground
(HSXB15 Lennox) and if so, would this help cause the compressor problems
we are having?
I am NOT an A/C guy, just trying to get information...
Thanks in advance...