Radon Fan Replacement & System Repair
Noisy radon fan, silent system, flat manometer, or a fan that is not running? American Radon Systems replaces and repairs fans on systems we installed and on systems installed by other companies. We look at the full system, not just the fan.
Text Bill a clear photo of the fan and the U-tube manometer. (815) 370-9682is Bill's cell phone.
Noisy or vibrating fan
A fan that becomes noticeably louder, rattles, grinds, hums, or sends vibration through the wall may be wearing out or may have another system issue that should be checked.
Normal fan sound
A properly working radon fan is not perfectly silent. Most produce a soft, steady sound of air moving through the pipe.
Silent system or flat manometer
If the system becomes completely silent, check the U-tube manometer to see whether suction is still present.
Radon fan replacement, radon fan repair, and existing-system service are core work for American Radon Systems. Homeowners call about failed fans, loud mitigation fans, vibration, flat manometer readings, and systems that suddenly go silent.
Call or text first if you want. Bill can often tell you over the phone whether it sounds like the fan, the gauge, power, or something that needs eyes on the house.
We Look at the System, Not Just the Fan
A fan may be the obvious symptom, but it is not always the only thing worth checking. Electrical supply, pipe connections, fan sizing, vibration, the manometer, the sump lid, crawl-space membrane, and the condition of the existing system can all affect how the system sounds and performs. We look at the full system before recommending the next step.
- Electrical supply or tripped circuit
- Manometer condition
- Loose or leaking pipe connections
- Vibration transfer
- Fan sizing
- Sump-lid condition
- Crawl-space membrane condition
- Pipe restriction
- Other system deterioration
Five Years Means the Whole Replacement Visit
If a fan we install fails during the first five years, we replace it at no cost to the homeowner. The service visit, labor, and replacement fan are all included.
A replacement fan installed under warranty receives its own five-year term.
Ordinary fan replacement on systems we did not install, or outside warranty, is a normal paid service call. Radon fan replacement is a normal service call for us, including systems installed by another company. There is no separate trip charge, and Bill explains the repair or replacement price before work begins.
Text Bill a clear photo of the fan and the U-tube manometer
The U-tube manometer is the small clear gauge on the pipe. It shows whether the fan is still applying suction to the system. A properly working radon fan is not perfectly silent. Most produce a soft, steady sound of air moving through the pipe. The manometer is often the better confirmation. Uneven liquid levels usually mean suction is present. If both sides are flat or level, the system may not be pulling suction and should be checked.
Text a photo of the fan and the U-tube manometer to Bill's cell at (815) 370-9682. That is his cell phone, not a call center.
Common fan and system concerns
Loud, rattling, grinding, or humming fan noise
Fan not running or system suddenly silent
Vibration through pipe, siding, wall, or framing
Flat manometer or changed from its normal reading
Old equipment that has been running for years
Replacement fan warranty questions
Replace a fan installed by another company
Same-day or next-day fan replacement when possible
What to Check Before You Call
- Look at the U-tube manometer and note whether the fluid levels are uneven or flat.
- Listen for rattling, grinding, buzzing, or vibration at the fan or pipe.
- Take a quick photo of the fan, fan label, and manometer if you can reach them safely.
- Note whether the fan sounds different than it used to or the system has recently become quiet.
- If there is existing passive piping in a newer home, ask whether activation makes sense instead of a full new route.
How long radon fans last
Radon fans are built to run continuously. Many last for years of steady service, but motors, bearings, and vibration eventually catch up with almost every unit. When a fan fails or becomes unreliable, replacement is usually more practical than waiting for radon levels to climb back up.
Cost of replacing a radon fan depends on access, fan size, electrical details, and whether other system repairs are needed. Bill can usually tell you what the visit involves after a photo or a short look at the system.
We replace and repair fans on systems installed by other companies
You do not need to know who installed the original system before calling. American Radon Systems works on common mitigation fan brands and existing systems installed by another company. Bill can usually tell from a few details whether the fan needs replacement, the system needs repair, or the home needs a closer look in person.
For passive piping questions, see passive radon system activation. If a remodel is pushing the pipe or fan out of place, see radon system relocation and rerouting.
Warranty note
If the failed fan is one we installed and it is within the five-year warranty, the service visit, labor and replacement fan are included at no cost. Warranty details, including transferability, are provided in the customer packet after installation.
Not sure what part you are looking at?
If you bought a home with an existing system, the fan, manometer, sump lid, crawlspace plastic, and outside vent can be confusing at first. Our existing radon system guide explains what each part does and what photos are helpful.
Not sure anything is wrong, but want it checked over? See Radon System Inspection & Checkup.
Radon Fan Replacement Questions
My radon fan is noisy. What does that mean?
A fan that becomes noticeably louder, rattles, grinds, hums, or sends vibration through the wall may be wearing out or may have another system issue that should be checked. We can typically come out the same day or the next day, including systems another company installed. There is no separate trip charge, and Bill explains the repair or replacement price before work begins. If the failed fan is one we installed and it is within the five-year warranty, the service visit, labor and replacement fan are included at no cost. Call or text Bill’s cell at (815) 370-9682 with a clear photo of the fan and manometer.
My radon fan is silent. Is it broken?
A properly working radon fan is not perfectly silent. Most produce a soft, steady sound of air moving through the pipe. If the system becomes completely silent, check the U-tube manometer. A working U-tube manometer normally shows the two liquid columns at different heights. If the columns are level with each other, the system is not showing suction. The manometer shows suction, not the radon level in the home. Call or text a photo to Bill’s cell. Same-day or next-day service in most cases.
How do I read the U-tube manometer?
The manometer is the small clear U-shaped gauge on the pipe. It shows suction, not the radon level in the home. Uneven liquid levels usually indicate suction. If both sides are level with each other, the system is not showing suction. If the reading changes substantially from its usual mark or the fan sounds different, send Bill a clear photo of the fan and manometer at (815) 370-9682 (his cell).
Can you replace a fan another company installed?
Yes. We service common mitigation fan brands and systems we did not originally install. No trip charge. Bill looks at the whole system so you are not forced into a full rebuild if a fan swap is enough.
How fast can you replace a radon fan?
We can typically come out the same day or the next day for fan replacement. Call or text Bill’s cell with a photo of the fan and manometer if you can. That number is (815) 370-9682.
Is (815) 370-9682 Bill’s cell phone?
Yes. That is Bill’s cell. Call, text, or send a photo of your fan, manometer, or test result. It is not a call center.
Related radon guides
Radon System Relocation & Rerouting
Need the pipe or fan moved for a remodel, finished basement, or addition?
Radon Mitigation Cost Guide
National 2026 cost ranges and what moves the number in Chicago-area homes.
Radon System Inspection & Checkup
Not sure anything is wrong, but want the visible system checked over?
Is My Radon System Working?
A homeowner guide to fans, manometers, sump lids, crawlspaces, and exterior vents.
Radon Testing Guidance
Retesting is how you know the current radon level in the home.
Helpful official radon resources
- CDC reducing radon levels in your home
Public-health guidance on common radon reduction systems and retesting.
- EPA radon in homes, schools, and buildings
EPA background on how radon enters buildings and why homes are tested.
Need a Fan Looked At?
A fan that becomes noticeably louder, rattles, grinds, hums, or sends vibration through the wall may be wearing out or may have another system issue that should be checked. If the system becomes completely silent, check the U-tube manometer to see whether suction is still present. Uneven liquid levels usually indicate suction. If both sides are level with each other, the system is not showing suction. Text a clear photo of the fan and the U-tube manometer to Bill at (815) 370-9682, or just call.
Already have a radon system?
You do not have to know who installed it or exactly what is wrong before calling. American Radon Systems checks, repairs, activates, reroutes, relocates, and improves existing systems throughout the communities we serve.