BUT, who reads labels! All much of the general public know about radon is it should be under 4, (In the US) and this little "monitor" clearly shows the "level" is below 4. I know the label right next to it says it is not radon level. To many, outside the radon industry, that little devise is showing radon "level". Most say "system monitor" on them, and then there are numbers 1-4 printed on it. Personally, I think the manometer, as all manufactures produce them, are one of the most misunderstood pieces of the radon mitigation system. If they don't understand what the radon mitigation system is then no matter what you supply them with will not matter. should be put into educating the general public. I'm thinking more of this time being spent on alarms, etc. At some point I think you have to put some of the responsibility of maintaining checking the system on the homeowner. A silent alarm is no better than the manometer, and I think we can all see issues with the audible alarm. Needs to match the fan warranty? Hopefully all this was thought about by the SGM-SF consensus body members. This leads us back to what the manufacturers warranty is on the alarm. How about the cost $ on the mitigator? How much would a service call need to be for a mitigation contractor to replace a dead alarm or dead battery. If homeowners think an alarm or light will tell them about a dead fan and the alarm is dead then they will have a false sense of security and never check the fan. Fail-safes - what happens when the alarm fails - is there a beep to let the homeowner know? What is the warranty on these alarms? Is it the same as the typical 5 year warranty on the fan? If alarms have a shorter life then the fan - will anyone voluntarily replace them? If required - there needs to be a standard on the make-up of that individual piece of required equipment to protect “us” the mitigation contractors installing them. This goes to show how important field testing is prior to requirement of such a major change to a radon mitigation system. how many homeowners really check them regularly ? No perfect solutions I guess. I guess we get back to the "U" tube manometer debate again. they may think that everything is ok but in reality, they are not operational anymore. I wonder how many more units might be out of commission because of defective power supplies and the homeowners don't know that they are not working because they have not checked to see if the lights on the alarm are lit up. no lights period to show that the alarms were still operational. Only way the occupants noticed that they were not working was that they noticed that the lights on the alarm were not lit up green or red anymore. Probably gets zapped with a power surge when the power comes back on. of the 200 systems that had alarms, I have replaced at least a dozen in the first 5 years where the power supplies stop working, probably because of the frequent power outages we get here in my region. For the first 200 systems installed that I was involved with here in Canada, we installed audible alarms on ALL of them.
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