This 10,000-12,000 BTU liquid propane hot water generator raises source water temperature up to 35 degrees f and is csa safety certified. This product is cordless, allowing you to enjoy a hot shower even in the most remote places. The external battery pack is powered by 4 d-cell batteries and will power through 6 five minute showers. A 1 lb. disposable cylinder connects directly to the included pre-calibrated regulator to deliver over 115 minutes of hot water on high. The included quick connect pump and shower head deliver an average of 6 gallons per minute, ensuring that your shower is as good when roughing it as it is at home. Integrated safety features, like the over temp cut-off, flow detector and tip switch protects you from scalding water and accidental burns.