By far the best instant hot water heater for van life as it only requires a very small exhaust vent cap! Enjoy all the hot water you need with an efficient, propane-powered, on-demand water heater that only heats water as you need it instead of using energy to keep stored water hot. Suburban's exclusive, technologically superior self-adjusting two-stage modulating combustion system monitors inlet water temperature and flow GPM along with outgoing water temperature and flow GPM, automatically adjusting propane input to virtually eliminate flow reductions and temperature fluctuations. Features state-of-the-art 3-Try Direct Spark Ignition for easy lighting and built-in freeze protection. Can be installed with only a small vent cap on the exterior of the RV; accessory doors are available for other application options. ETL, CE and AGA listed. 60,000 BTU Propane powered 12-volt, 2.1 amps Operates on only 0.5 gallon per minute incoming water flow Maximum output water temperature 130°F Built-in freeze protection. Vent Cap and remote command center sold separately.