RadonAway Fan Pipe Cap with Screen for 4" PVC

Since there have been some mixed reviews on this pipe cap I thought I would chime in with my experience. The installation to my schedule 40 PVC radon vent out through the garage roof went well. The cap fit pretty loosely on the PVC, but I didn't want to glue it using PVC cement in case I ever wanted to remove it for some reason. I had read a review about the vent holes icing up in the winter so I wanted to be able to remove it without cutting the PVC pipe in the event it iced up for me too. I put a few dabs of silicone rather than PVC cement, which should be enough to hold in place securely but still be removable should I need to replace it with something else in the future. So far, this is working very well. It allowed me to put the radon fan in line in the attic and not have to worry about diverting moisture away. It will also keep birds out (I had three birds over the summer end up down my 6" chimney pipe and into my wood stove). I probably could have made my own cap contraption for about half the cost, but the convenience was worth it and I do not regret the decision. If I have any issues with the screen freezing up this winter I will update the review.

The product is nice and does the job, but it's the wrong size for my vent pipe. My RadonAway system says it has a 4" exhaust pipe but it's 3"...no fault of the manufacturer so the product still gets 5 stars as we just placed it on the pipe and even in heavy winds it hasn't moved--job done.

The installer of my Radon exhaust system left the 4-inch PVC pipe open at the top, about a foot above the roof of my house. The problem is, there is a big Oak tree with branches above that opening, and small acorns kept falling in and getting stuck in the motor. I would need to open the whole radon exhaust assembly each time to remove the acorn. This cap has solved the problem of acorns falling in. The only issue I had with this cap is that it is a loose fit on my 4-inch PVC Pipe. I had to drill holes into the sides and put screws to hold the cap in place on the PVC pipe. But the cap is sturdy, and is doing its job well.

On the expensive side, but Well-made.Strong wind crossing the top of our radon vent pipe caused a loud low pitch sound. After installing this vent cap, no more noise.

Haven't installed this yet, but it looks good.The rules for an end cap on a radon evacuation system say to discharge at any angle between straight up, down to the horizontal but not lower (e.g. do not discharge downward). This product meets those specifications when installed on a vertical run of 4-inch PVC.The holes in the plastic grid are easily large enough to allow moths (or other insects) entry. Every summer moths emerge from pupa in Kansas wheat fields, then fly to Colorado by the billions to get drunk on flower nectar, have lots of moth sex, and sleep in off in nooks and crannies. At the end of summer they fly back to lay their eggs in good Kansas dirt. The problem is the nooks and crannies they choose. When they awake from their rest they poop all over their hiding place as they take wing for another night of moth debauchery. For example a light fixture that offers hiding spots around its base will end up with yellowish-brown streaks running down the wall beneath the fixture. Yuck! If they get inside the radon pipe, what will years of poopy discharge do to the radon fan when the poop dribbles down the inside of the pipe?I have some 1/4-inch hardware cloth at the cabin, so I'll cut semicircles out of that and slip it in behind the plastic grid. That should make this moth-proof. A tighter grid would have been brilliant, but I can easily fix so it's okay.

Fit perfect, although I used a self tapping screw or two to hold it on, and it even made the system a touch quieter. Maybe by changing the tone of the output air, or maybe because you could direct it elsewhere.

Saw this on another house for their Radon system and had to get it. Just needed an adapter to fit my PVC pipe. Glued and screwed and it's holding well.

I purchased this item along with the "FanGuard Radon Fan Condensate Bypass Kit - 4". Before installing both of these I installed a "manometer" to monitor the airflow thru the piping. I was concerned that this item and the condensation bypass would slow the airflow. At the same time I had read many reviews of radon fans that had slowed down and quit because of constant exposure to rain/snow etc, my concern there was that as my fan aged I wouldn't have an accurate way of knowing how much its ability had diminished.The manometer I installed has 45 hash marked to gauge airflow. The higher of the water tables in the tubes was sitting pretty consistently at hashmark 7. After I installed both the condensation bypass and pipe cap the water now slightly dipped to between 7 and 6 3/4 and there is no change on my digital radon reader. The very minor dip didnt change readings and is well worthwhile the peace of mind knowing that I've extended the life of the fan and that it wont prematurely loose is power due to exposure to moisture.