I tested for radon when I first moved in and it was low. Unfortunately that was in summer when levels were low. I'm in Oregon where radon's lower than other areas so I didn't pay it much mind. I got an airtthings radon detector on a whim at Home Depot and as soon as it started raining in fall levels crept up and when it went past 4.0 I knew I had to do something. I almost called a company but saw that estimates would be around $1500-$2500 to hire it out. I looked at the materials and saw the job would run me about $250 to diy. I took a couple weekends to do everything but the whole job ended up around $140. I have a floating floor through most of the finished daylight basement but it was manageable to pull up the carpeted areas to seal cracks and found a good spot for the suction pit in the central hvac room. Radon levels weekly averages are 1-1.3pCi/l and overall averages are down to 1.1pCi/l. I'm satisfied. Looks like I got the RN2 at a good price compared to now but the fan is great quality, has strong suction and easily installed as a homeowner. I can't recommend this enough.

Works like a charm , used this fan on a 1000sq ft basement utilizing the sump pit which I sealed brought the levels from a high of 12pCi/L to .3 and lower. As I'm in Canada I installed the fan in basement and vented out through the sidewalk as per Canadian recommendations. Fan is so quiet that I cannot hear it unless I'm in the furnace room where it is installed. Great fan, great price .

Fan installed easy with no problems. This fan had a much higher cfm than I needed. The orgional fan pulled 1.0 inches. This one was over 2.1. Lowered the voltage down to 75 vac with a variac, now it is operating at the same level. Very quite.

Easy to install, good instructions, and they give you a full warranty for DIY, which isn't true for the other common brand

Better than previous model