RP145

I am using this as a replacement for an existing unit, same model and everything. I've re-purposed the existing wiring to use with this new unit, and everything went off easy-peasy. Our previous unit made it 19 years, so I was easily up for picking up the exact same unit to replace that reliable one. As long as their quality standards haven't gone down, we're good for a while.

Hubby installed this and it’s working great! Our radon test went from 7.8 to .24!!! He has yet to seal it to the floor so we are getting a little seeping in from the cracks but an acceptable reading is anything under 4, so we are super happy! We saved tons of money watching YouTube videos and did it ourselves!

If you are replacing an old radon fan or have a newer home, with a passive random system already (e.g., a pipe leading from the sub-slab of concrete through the attic and to the roof), along with a pre-installed electrical outlet in the attic, then this is a fairly simple project to do yourself. The RadonAway 145c is the most commonly used fan. It has moderate suction, and it is ideal for gravel and concrete slab basements. Below is a variety of information pertaining to installing the RadonAway 145c and more: Get a radon detector that measures a weekly average because radon can vary greatly throughout the day and week. I have the AirThings radon detector from Amazon. I had a second one and the readings were the same, so at least the reliability is good. Get a RadonAway manometer to test the suction of your radon fan. This will ensure the fan is working well and there are no leaks in the system. For installation, search “Installing And Understanding Radon Mitigation System Manometer” by Heathy Air Solutions on YouTube. However, ensure you drill the hole in the pipe about two inches lower than the top of the manometer. Also, when you get the manometer, it might not be even on both sides or set to 0. Don’t worry because it adjusts by sliding up and down. As for it not being even on each side, that is also normal. It will even out once you take the tube stoppers off the top of either side. As for installing the fan, here are the steps I used: 1. Get all the supplies: radon fan, 2 pipe-to-fan connectors/couplings (the 145c model has a 4” connection size and my radon system pipe was 3”, so I got 2 Fernco 3”-to-4” couplings), electrical cord (HomeAire (AKA RadonAway) Power Cord Kit - 6 foot on Amazon will get the job done) [yes, it does not come with a power cord for some reason], PVC hand saw or fine-tooth sawzall, razor for reaming the inside of the pipe after cutting (optional), file for filing the edges of the PVC after cutting (optional), and flat-head screw driver or socket wrench for tightening the coupling. 2. If applicable, and the pipe goes to the attic, install in the attic, not the basement. 3. For installing the power cord, your fan might have two or three wires for the electrical. According to an Amazon answer by RadonAway, either way is fine, and it just depends on which manufacturing facility produced it. However, the power cord has three wires. If your fan only has two, then just cap the third one on the power cord, the green/ground wire. 4. Test the fan by plugging it in prior to going up in your attic. Shake it to ensure nothing is loose or trapped inside the fan. 5. Affix the coupling to the fan on both ends prior to heading into the attic. 6. Take all your supplies to the attic. 7. Cut the pipe. I cut out a 11.25” chunk of pipe because the total length of the fan and the couplings was 14.25”. Then, I subtracted 1.5” for each end of the coupling. 8. [OPTIONAL] File the outer rim of the pipe on both sides. 9. [OPTIONAL] Using a razor or reaming tool, ream the inner rim of the piper on both sides. 10. Plug the fan in, then check your manometer to ensure it has proper suction. The max should be about 1.75, and mine come out to 1.25. As for the sound, it has a fairly mild humming, even through the ceiling, but you will get used to it in no time. I sleep with a sound machine, and at worst, it just adds to that noise. I hope this helps and saves you some time!

This kit works amazing. Its very quiet. My raydon levels were at just above 17. It has been running for about 9 hrs now and my levels have dripped to 2.4 and seems to be going downward more. I did the install myself and it is very easy. If you are handy at all you can do this installation. I also used the jackal sump pit cover.

Downsized to this fan after a larger one was too noisy. Pleased with the noise level and effectiveness but it stopped working after three years. I plan to buy again though since maybe it was a fluke

Easy to install- only took an hour or so

UPDATE – August 2026 Replaced the RadonAway fan with an equivalent Fantech fan. When installed it was very quiet. Probably a little quieter than the last RadonAway fan when it was initially installed. Now, 1½ years later, it remains a quiet as when first installed. We will see whether it remains this quiet after another 6 years, but as of now I strongly recommend the Fantech fans. ORIGINAL – February 2025 This company's business model is to deal only with Radon Mitigation companies – they refuse to guaranty fans sold directly to end consumers. OK, so I get that they don't want the liability of some idiot trying to design their own mitigation system, but once the system is designed, installed, and the fan is simply being replaced with exactly the same model, one might hope for them to stand behind their product. I have had 3 RadonAway RP145c fans in less than 7 years, and even that failure rate is a little misleading. When I bought my house, a high radon test result had required the seller to install a mitigation system before the sale. When I moved in, several months after the system had been installed, the fan sounded like a jet engine, but never having needed a radon system before, I decided the noise level was normal and I would just have to live with it. Unfortunately, after 6 years, it had not only gotten much louder, but also began making clanking noises. OK, it had been 6 years and maybe 6 years was all the lifetime one could expect from fan units that run continuously, so I replaced the fan with the same model through Amazon. This first replacement fan was initially quieter than the original, but it began getting noisier after 4-5 months. After 2½ years, the fan motor bearings had worn out and not only was the fan louder than the first one, but the fan blades also began bouncing up and down on the shaft and were banging inside the housing. At this point, the fan (on the outside the house) produced more noise inside an adjacent bathroom than its own ceiling fan. The fan ductwork attached to the side of the house transmitted so much noise through the outside wall to an upstairs bedroom that it was difficult to sleep. So, not even 3 years, but time for a third try. Replaced the fan again, still with the same model as was originally installed by the mitigation company, and... was pleasantly surprised to discover that this third fan was quieter than my refrigerator, even when standing right beside it outdoors! However, as they say, that was then, this is now! I installed it in late November. It's now mid-February, a little over 2 months later, and last week this third fan suddenly became about twice as loud as the either of the first two. Within a week – apparently due (again) to bad bearings. VERY DISAPPOINTING, to say the least. Remember that the fan unit is factory sealed to prevent air leakage. Unfortunately, that also means that the fan cannot be serviced, so that if it fails, it must be discarded. After 3 tries with RadonAway, I believe that I have given them more than the benefit of the doubt. I even called them after the second failure to ask whether they would like me to send their fan back so they could work out why the fans (and particularly the fan bearings) were failing. Given that the whole point of a radon mitigation fan is for it to run continuously (AND QUIETLY!) for years, I would have expected that they might be interested in making their products more reliable. Apparently, not so much and they declined my offer! At this point, I will try another brand for my 4th fan. I doubt that any other company could produce a less reliable product. BOTTOM LINE: Not surprisingly, I do not recommend this product.

I have a digital radon detector in my basement to keep track of radon levels and I am amazed at how much the numbers can vary throughout the year. I finished building my house last February and had installed a loop of 3" corrugated and perforated drain pipe around the inside perimeter of my basement before the basement slab was poured in case I needed a mitigation system. I had no idea what level of radon my basement would have, but I know that in Montana we have a pretty high incidence of elevated radon levels. Anyway, once the house was framed I ran 4" schedule 40 PVC up through the garage and out the roof. I had the PVC from the drain pipe under the concrete slab stubbed into the basement and I had the vent pipe out the roof stubbed into the unfinished basement ceiling. I got the radon detector before I connected the two together and found that the radon levels were running between 9 and 12 pC/L depending on how much I had the basement windows open. The recommended max level of radon in the US is 4 pC/L, so I was a fair bit above that. I connected the vent out the roof to the drain pipe under the slab and the numbers dropped to around 2 pC/L right away. The number stayed pretty low through the summer with this passive mitigation system, but I worked on landscaping the yard and installed a sprinkler system. By fall when the weather started cooling down and I had sod installed and the sprinkler system turned on the radon numbers started going back up. They got all the way up to 17 pC/L so I ordered this radon fan. I guess once the soil gets wet around the house and then freezes in the winter the soil doesn't breathe well and the radon levels go up. That would make sense, anyway. Well, as soon as I got the fan installed in the garage attic the numbers dropped to below 1. Right now I am running between 0.6 and 0.9 pC/L. Needless to say, this fan made a huge difference. The performance is going to vary based on how porous the soil/gravel is under the foundation. I installed a pressure meter on mine and I am running at about 0.6 inches of water column vacuum in the pipe. Looking at the conversion table of the fan owner's manual it would seem that means the fan is pulling somewhere in the 125 to 130 cfm range. I would definitely recommend this radon mitigation fan.

This is the second Radon Fan that i've had installed in my basement (Canada). The first one was a much lower cost "complete" kit that went in fairly easily. However, after a few months I noticed that the bearings were starting to get noisy. Switch in the RadonAway blower and it has been running for a solid year with not one glitch at all. Nice and quiet, still has the same draw vacuum as when it went into service. Yes, the price is higher than many of the "cheaper" options, but this unit is definetly the way to go. If this unit ever has an end of life I will certainly replace it with the same make and model. Great product and well worth the money.

Excellent product non stop working no issue whatsoever.-

Well it's was pretty easy to install and works wonderfully. It's not noisy at all and does the job by taking care of the radon gas in our house. We had relatively low radon gas like you can see our worst week was 120bq/m3. We had a pretty warm winter this year in ON, 🇨🇦. It's probably not representative from other years and we probably had way more than this year. My husband was coughing all the time because he was mainly in the basement either working on his computer or sleep because he often work nights shift. The highest we had during the day was 189 bq/m3 this year and I heard him cough none stop. Since we installed the radon fan he stopped completely cough when he is in the basement. On another note, like I said it was relatively easy to install but we had more issue to find the accessories and materials to build and install it correctly. We live in ON, Canada in a city where we have the highest level of radon but yet no one's knows about radon side effects on their health. It's like talking about a unicorn when ask help in store with materials or advice. So, we needed to watch a lit of YouTube and Google about how to install it. This fan quoted one of the best one from our research. Also, from professional and reliable sources we decided to install it outside because if you have any issue or it's breaks you might have leak on high radon gas inside your house especially if you install it in the basement. I would suggest if the weather his really bad and cold like Manitoba or Alberta to install it in the attic of the house and never in the basement like I see many companies does in ON. Bottom line, we are really satisfied and now we will make sure to patch up some minor crack to our basement floor and sealed it with radon sealer epoxy. We need to better find a way to also sealed our sump pump because again it's really hard to find in Canada a well fitted radon sump pump cover without paying 300$ on Amazon. We spent easy 1000$ just in materials to install it because we have no manufacturer who produce radon fan in Canada. Thank you and we are really satisfied with our radon fan. One more thing maybe providing a nice plan how to really install it would be nice. So, people don't pass hours to find how to install it.

Installed the RP145 connected to unused under-slab heating air ducting (after sealing off the duct inlet and all outlets). Very quiet fan but more powerful than for what was needed so slowed it down by wiring in series with a 40 Watt light bulb (you can use a light dimmer circuit to accomplish the same thing but it will make the fan buzz a bit). Brought the radon reading from about 300 to about 10-15 Bq/M3. Before installing the fan, I measured the radon level in the ducting and found it was very high (around 2,000 and still rising when I removed the meter) which makes me glad I never used those ducts as they seem to be, at least in my case, an easy entry route for radon to the basement. I also bought the Corentium 223 radon meter which proved very handy in measuring the effects of sealing cracks etc and installing the fan. My neighbours also want to use it so overall cost will be less than buying the one-shot "pucks". I'm not recommending this to anyone but instead of running the exhaust pipe out through a hole in the basement wall, I simply routed it to the nearby cleanout Y located at the bottom of the main plumbing vent stack. I realize a building inspector might not be impressed but it was the easiest and least expensive route and seems to be working well with no noticeable effect on the plumbing fixtures.

I recently installed the RadonAway RP145c Radon Fan (P/N 23030-1) in my basement mechanical room, and it has delivered outstanding results in reducing radon levels. Our long-term average was around 300 Bq/m³ and within 24 hours of running this fan, the readings dropped to single digits. The 7-day average is now about 10 Bq/m³ and still trending downward. It's been a huge relief for my family. The fan is highly effective, and seems built to last, with sealed seams and a water-hardened, thermally protected motor. However, it’s not as quiet as advertised. There’s a noticeable hum or vibration, especially when installed indoors. If you plan to install it in your mechanical/electrical room, I strongly recommend adding soundproofing to the walls of that room — it can help reduce noise carrying into adjacent living areas. This isn’t a “must-have” for every home, but if your radon levels are high, this fan is the one. Just be aware of the noise factor and plan your installation accordingly.