jdelectric
Member
We are using Firex 7000 combo smoke and co2 detectors and have had alot of them going off in the middle of the night when the heat comes on. I have cleaned them out and replaced the batteries. The HVAC installer does not think it is his equiment. I have talked to another electricain and he said his 7000 Firex detectors has gone off at night with no obvious smoke or CO2. Has any one else seen or heard of these problems? I would be very thankfull for any advice.