RadonAway 23005-1 GP501 Radon Mitigation Fan, 3" White

The original radon fan had run continuously for 23 years with no maintenance required, so I had no worries about replacing it with the identical model. It fit right on the piping and the wires were connected with the supplied parts. I disassembled the old unit and found that one of the bearings was warn and noisy. I have ordered a new bearing ($7) and will completely clean and reassemble the old unit as a backup or offer it for sale to recoup some of the cost of the new one which I feel is a bit over-priced.Replacing the unit with the exact same unit is no more difficult than replacing a light bulb. A professional may charge more than $500 to do this!

Just what I needed to replace my other one that died which was the same as this one. Took all of 10 mins to install and works perfectly! Not much else to mention.

This is a quality radon fan but I purchased this one to replace an exact one whose motor had failed after 4 years of continuous operation. The fan is guaranteed by the manufacturer for 5 years but only if it is "professionally installed". Mine was not "professionally installed" because it was put in place in a new home that already had everything in place for radon gas remediation EXCEPT for the fan. It was a very simple installation so no professional needed. But when my first fan failed, I called the manufacturer (who was very nice on the phone) but they would not budge off of their warranty statement that the fan has to be professionally installed. I still purchased their product for the replacement because it is one of the best on the market, but let's hope this motor lasts longer than 4 years.

Worked great direct replacement

Bought this thing a few years back and it’s still running quietly.

Great to find this model still in stock. I was able to slap this one in after about 15-20 minutes of work to replace one that had burned out after 15+ years. A bit expensive but the quick effective installation made up for it. It reduced radon levels from around 8 to a bit over 1.

Before the fan, I had a radon reading that fluctuated between 2.8 and 4.3. Now with the fan, it's reading between 0.8 and 1.1. I had several challenges given my home size and structure, so this is what I had to do: My house had a passive pipe stacking the middle of the house going up 3 stories to terminate in the attic (so there was a long pipe stretch to suck through and due to finish spaces, several tight pipe turns that I feared would reduce effectiveness). I have a large home with basement footprint about 2000 sqft with 3 main, mostly isolated sections under the slab due to the way the footers are situated (I have the house plans). So I feared at best I would need multiple suction points, or at worst multiple fans, but I started with the single GP501 fan and the passive pipe I already had. I cut the bottom of the pipe and slab, and dug out 10 gallons of sub slab material which is a combo of approximately 2-4 inches of gravel on top of pure clay (before that the pipe just terminated in the ground with no air pocket). I tried to seal some cracks and seams in the basement slab, but since it's partially finished, I could only do that for about half the floor space. I installed the fan in the attic and had my roofer extend the pipe through the roof at close to the highest point of the roof ridge as possible without it being visible from the front of the house. The results are better than I expected! I have two continuous radon detectors in the basement in different locations and one is now reading 0.8 after 14 days pretty consistently, and the other is 1.1. I will say, the fan is not that quiet, and I can hear it in the room where it is above (although it is a low hum that is easy to ignore). I have a tall house, and can even hear it outside a little bit, but just a quiet low hum from the pipe. But I would trade that sound any day for the suction and results this fan provided!

I bought this to replace my original radon mitigation fan, which had worn out, it was of the same brand and fit well, and is slightly more powerful than my original fan. My only criticism is that the motor runs a little bit louder than my original fan this may be because of the increased power.