The three solar heating of water, Richard alluded to above have been proven, and he believes solar water heating panel contributes in several ways. "Even if you plan to install a full scale solar house, but to isolate the portion of the heater can be a smart and economical," he said.
However, he added that if you can heat water with solar energy (thanks to the sun), you will save enough money on your electricity bills, which will eventually give you a better ROI ( return on investment) on your home solar power system installation.
One disadvantage of installing a solar water heating, according to Richard, is that if you live in a cold climate weather conditions, you will obviously need to loop systems both an anti-freeze closed. "This will increase your costs for the installation of total solar energy system, but not much, but all things considered, I think it will be money well spent," he said.

Comments: 3
Your thermocouple has died. It's an easy fix. Shut off the gas (the OFF position on the valve assembly is sufficient) and remove the existing thermocouple. Take it to the hardware store and match it with a preplacement. Dirt cheap. Reinstall it, turn on the gas, light the pilot, and you're good to shower!
Its the thermocouple. It is the very small tube that comes from the light valve, button control and goes to where the flame hits it just inside the heater.
when you are lighting the pilot, you are to hold down the "button" allowing the gas to flow freely until the pilot has heated this thermocouple enough for it to hold open the valve for you. Your thermocouple may be dead, or dying. Try holding down the "button" a bit longer, to see if you can heat it more. You may not have it hot
if you change the thermocouple and it still doesnt work...have the gas valve changed. thats the box with the big dial on it. i bought a new water heater and had the same problem . changed the thermocouple and still didnt work. changed the gas valve and it has worked fine ever since... seems it had a bad valve from the manufacturer. this was an easy