We are having both our HVAC units replaced with Carrier Infinity. I requested concrete pads for the new units. They stacked the new pads on top of the existing pads as existing pads were too small for the new units, and also they are burried almost to the top in asphalt driveway (pads installed before driveway). I was okay with this.
Problem is, one of the existing pads was not level. It is level (or close) left to right, but front to back it is not. It is easily detectable by looking at it, and I am not too happy with the visuals as it sits about a foot from the other one which is much more level.
The installer said he could shim the bottom of the concrete pad, but then it would not be perfectly flat on the other pad and create noise. He said that the manufacturer suggests a tilt on the pad so water will run off, and that it will not hurt the unit. (My guess is you'd have to raise the rear of the pad about 3/4" to reach level).
Looks like he has already attached the lineset to the unit, although the electrical is not attached and the lineset is not neat and tidy as the other one, so they still have some work to do.
What do you suggest? Is there something that could be slid in the back to level it? Should I leave it alone?
(Quick answer requested, today is their last day and I may lose my chance to request a change).
What do you suggest I have them do?