I know of no one that has done this to an older heater. Usually just a real good cleaning is all that is done to them. I read were some one retro fit a bar-b-que ignitor to one, but I would not do any modifications to anything gas operated.
Temperatures are regulated by opening the window a little more.
-BobbyWright
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BobbyW AIR# 123
-"You want to make it two inches - or, if you're working in centimeters, make sure it's enough centimeters for two inches."-Red Green
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