kenmac said:
I know what you are talking about on the direct vent. But, I'am just curious as to why you would go with 85% efficiency logs insteat of the 99.9% efficienty logs without a vent ?
Even though unvented gas heaters are legal in many states, it still doesn't seem like a great idea to me. Sure, in some ways it is no worse than having a gas cooktop running but you don't generally do that 24hrs a day with the house buttoned up tight. People notice odd films developing on their windows, there are at least trace amounts of air pollutants discharged into the living space too.
Here is an interesting summary of the "con" position from a Canadian website:
“For $500, you can have this unvented gas log that will throw off heat, water vapour (adding to the humidity levels in the home), traces of carbon monoxide, sulphur dioxide and nitrous oxides, and may, if not maintained, operated or installed correctly, kill you and your family in your sleep. Or, you can have this direct vent fireplace that uses outside air in a sealed combustion system, and only delivers heat into your home, allowing you and your family to sleep in safety for $2,200.”
I guess it’s all in how you ask the question.
Perhaps one of the better quotes I have read in this debate came from one of the many opponents to unvented, Jim Hermann of The Earth Stove, who said: “You don’t need a scientist, you need a psychiatrist.”
I'll accept the 15% penalty for peace of mind.