GAS 18V-1 have more pressure; GAS 18V-LI have more air flow; The power of both is equivalent ( 4 min/ 1 Ah). GAS 18V-1 is better for home. New filter system really works. GAS 18V-LI is better for cleaning concrete dust (or other small particles), because it have more filter surface area (old 123 cm 2, new 55 cm 2)
