Seaweed-clogged intakes will cause marine air conditioning pumps to run dry, burning out the motor of most pumps. These sturdy, stainless steel and bronze pumps have thermal overload protection and can run dry without failing. The pump motor is permanently sealed in nontoxic lubricant for years of reliable running. Can be submerged. Pumps are not self-priming and must be located below the waterline. Operates on 110V AC. Each pump is UL-listed, ABYC-compliant and USCG-approved. One-year warranty.