Can you use different manufacturer's logs in other manufacturers fireplaces? Is there any difference between them that would prohibit using a different brand log?
My son moved into a house last year that was built circa 1990 with a TEMTEX brand vent free propane gas fireplace. After a good cleaning and checking that there weren't any gas leeks, we turn it on and found that the unit works fine.
However, the logs look kind of tired, and he would like to replace them. After an exhaustive search on the Internet, I found that TEMTEX (/TEMCO) isn't in business anymore.
I know there is a "manufactured" difference between various brand logs, because his Temtex logs seem to be either hollow, or made from a very light material. The logs in my unit are heavy - more like ceramic.
The only issue I would think matters is whether the logs can be used in similar BTU fireplaces. If one burns just as hot as the other, what difference would it matter who made the logs, or what they were made out of?
I ask the guy that I bought and had install my unit, and he said they had to be from the same manufacturer, but wouldn't give me any valid technical reason why. I think he was more interested in selling a new unit rather than just ordering me another set of logs.
Am I right on this thinking or is there some other (relevant / technical) information that I'm missing that would preclude using other logs?