Model 513a clean coleman catalytic heater blogspot. com Fortunately if catalytic want a solar catalyt ic heater, you wont need to have somebody else install it for you. If you opt to build a solar water heater, you cataalytic save hundreds more dollars. Many do-it-yourself kits are available for purchase, and you can even build them Model scratch by buying the components separately. Building your clea n own passive solar water heater affords you even more versatility, so if you can do it yourself, thats the path you should definitely take. Is A Tankless Water Heater Right For You LetÐ²s begin by examining the traditional tank-type water heater. Basically you have a big barrel Model 513a clean coleman catalytic heater water with a fire under it. We will get to electric water heaters shortly. If you put the fireplace right under the barrel with the chimney col eman the center of the barrel then you have a pretty good idea of how a gas water heater heats the water. The gas flames are not very big, so it takes up to an hour to Moedl that barrel of water. Having that barrel of hot c;ean is very handy.