Zodi makes some simple and portable water heaters for showers — some work with the small 1 lb propane cans…This is an on-demand heater, so it heats the water as you use it. They also make shower heaters that use a 20 lb propane tank for fuel. ...
Conventional water heater.A conventional residential water heater — let's assume it's gas — is built around a tank containing 40 to 75 gallons of water. When the water inside falls below the thermostat's set point, typically between 120°F and 140°F, the burner comes on and heats the...
starting the pump by itself, allowing a pressure tank to fill, and then turning off the pump Is a viable solution, once the pump is off, you turn the other load back on.