I'm looking at buying a 2.5kW split system and I was talking to a mob today and I am looking at a LG WH system. But I was wondering what people's opinions are on how to mount the outside unit. The AC place said they just use a Poly Slab, but the unit will be going onto a grass area (though I could cut that back and lay weed sheet and gravel down). I was thinking a concrete slab, I could make a 1x0.5x0.075m slab myself. House is on hard ground but I would still have gravel under it. Or I could mount the unit to the walls. House is brick veneer.
So what do you recommend?
Wall brackets - Can mow under and my dumb dog can't pee on the compressor. Extra $100.
Concrete slab - I would imagine the longest lasting of the lot. I would make it, so say a bit over $100-$150 extra.
Poly slab - Included in the price, so no extra cost. Worried that line trimmer might damage it.
Poly Slab would be my choice,