How can it not be vented? How efficient are they? Are they safe? Which is better, blue-flame or infrared?
These questions, and more, are all answered on my FAQ page, located at www.stpaulmercantile.com/ventfreeFAQ.htm
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where is the fuel switch found
ReplyDeleteHow do gas heaters and fireplaces work without vents. Won't it lead to build up of Carbon Monoxide inside the room?
ReplyDeleteSurvival Food
I really like the content of your post. .. it interest me a lot to read. I've learned a lot thanks.
ReplyDeleteregards,
Knuxie
natural gas compressor