To function at their best, air conditioners and heat pumps must be positioned on level ground. AC equipment can malfunction or wear out prematurely if the ground beneath them shifts or tilts more than a few degrees.

Does my outdoor AC unit need to be level?

To function at their best, air conditioners and heat pumps must be positioned on level ground. AC equipment can malfunction or wear out prematurely if the ground beneath them shifts or tilts more than a few degrees.

What should I use to level my AC unit?

Try working a long board under one end of the concrete air conditioning pad, lifting it up, then packing sand under it. Do the same on the other end of the concrete air conditioning pad, making the pad as level as possible. Lift the concrete air conditioning pad slowly to avoid cracking it.