Pete / billz -where did you get your hearth rugs? My floor (laminate) is going down now, probably not going to burst into flames if a coal hits it, but still would maybe like a bit more protection in front of the hearth anyway. I know nothing about these mats (quality, etc). Any advice is appreciated...You should not get false alarms unless you have poor draft and smoke comes out when you open the door or there is leaks in the pipe. Those are issues that ned to be addressed by themselves. We have no false alarms going off with ours I test them monthly.
Pete