I like it but really some basic statistics would be good.
its kind of like an insurance policy.  you hope it works, but there isn't any way you can prove it.<br /><br />One thing I was very curious about was the ability of the unit to control the air in a certain area.  But I can't find anywhere on the website or the amazon product page where its clarified.  At the moment I have two of these, one is in the laundry room and the other is in my son's bedroom, which is about 11x10 feet.  One presumes that the unit can handle a bedroom, but as I said, its really not clear.<br /><br />According to the manufacturer, the bulb loses 15% &#34;efficiency&#34; after 4000 hours (5.5 months of continuous use), and should be replaced.  I have been waiting until mine burn out before replacing.  Replacement bulbs are reasonable.  At the time of this review, they are $8 each delivered from Amazon but $14 each from the manufacturer's website.<br /><br />But lets go back to this 15% efficiency loss.  What is this 15% of?  Brightness?  luminousness?  UV rays (quantity)?  UV strength (quality)?  Germs killed?  15% suggests there is some number, some study, but all we get is 15%.  If I'm running it in a small room, and if there is a loss of efficiency, won't all the germs get killed anyway, but just slower?  too many unanswered questions.<br /><br />Guardian's website says:<br />&#34;UV-C light helps kill the DNA of germs reducing their ability to reproduce. UV-C light kills germs.&#34;<br /><br />I found this a bit confusing.  On the one hand, the UV light neuters the germs so they can't reproduce, which does help.  The next sentence says that it kills germs.  If it kills germs it doesn't seem relevant that it would neuter them.<br /><br />While I like this unit, I feel that GG needs to provide a bit more depth to their information.  They have a lot of grand, sweeping statements like &#34;UV-C has been used to kill germs for 100 years&#34;, but very little information about the efficacy or efficiency of their own product.<br /><br />Basically, they say &#34;Our product must work, because science is happening inside.  You can't doubt science.&#34;  So I remove a star for the lack of information.<br /><br />I do believe in the science, which is why it gets 4 stars, but I just can't give 5 stars for a &#34;covered wagon medicine show&#34; presentation depth.<br /><br />Some extremely basic statistics really need to be added.
Rating: 4 stars