|Posted by Bill on March 16, 19101 at 13:16:29:|
I have two propane ventless heaters in my home (20,000 BTUs each) and I'm happy with their performance: efficienct, economical and convenient. However, I wonder about several things. Is carbon dioxide gas harmful over the longterm? On very cold days the heater (blue flame) may be on for 18 hours steady. Is this harmful? I also notice a very thin haze on some windows and mirrors. What does this indicate?