Ultima’s state-of-the-art silent surge compressor is the quietest compressor on the market with superior longevity. The pumps are designed with Teflon®-coated pistons to prevent friction and cooling fins to reduce heat, keeping operating noise to a minimum. The silent surge compressor includes a 4 gallon air holding tank and an automatic holding tank drain system. The compressors are supported by Ultima’s exclusive 5-year warranty.