Super General Uno Plus Air Conditioner All sizes are available: 12,000 BTU, 18,000 BTU, 24,000 BTU, 30,000 BTU, 36,000 BTU. Super Air Conditioner Specifications: Internal and external copper pipes, energy-saving, comes with 4 meters of pipe. The internal unit is 100% copper. One of the best Super General air conditioners.