Why isn't my radon fan working?
A radon fan that has stopped may have a power problem or a failed component. A changed system indicator can also reflect a gauge or tubing issue. These clues help direct an inspection, but none identifies the cause by itself.
From a safe, accessible location, note whether the fan makes its normal sound and photograph the gauge. Do not open electrical housings or climb to inspect an inaccessible fan. Tell the technician about recent electrical work, an outage or changes to the piping.
- Record when you first noticed the problem.
- Keep the existing fan label or model number available.
- Send a photo showing the whole gauge and scale.
What does a radon alarm sound like?
A radon system alarm may use a buzzer, light or display, depending on the installed monitor. Identify the device before interpreting its signal. A pressure-loss alarm reports a system condition; a separate radon monitor measures the gas concentration.
Record the model and message instead of assuming every beep has the same meaning. Keep the instructions with the service request. If you cannot identify the device, a clear photograph can help Air Sense decide what information is needed next.
Do you repair radon systems another company installed?
Yes. Air Sense states that it replaces fans on systems installed by other companies. You can request an assessment even when you did not own the home at installation or cannot reach the original contractor.
Bring any records you have, but do not postpone asking because the file is incomplete. The existing layout and condition still need review before the repair scope can be confirmed.
- Previous installer and approximate installation year, if known.
- Prior invoices, warranty documents or radon reports.
- Photos of accessible pipework and the fan label.
What happens on a radon repair visit?
A useful radon repair visit connects the reported symptom with the system's condition. Ask for an explanation of the findings and the proposed repair before approving work. Replacing a fan and establishing the indoor radon level are separate tasks.
Confirm how the system will be checked after repair and whether follow-up radon testing is included or arranged separately. Save the new component details and any updated operating instructions for the next owner or future service call.
- Describe the symptom before proposing a replacement part.
- Ask what the diagnosis supports and what remains uncertain.
- Record the repaired system's operating indication.
How much does radon system repair cost?
Radon system repair cost depends on the diagnosis, access and parts required. A gauge correction, fan replacement and pipe modification are different jobs. Air Sense provides the repair scope and quote for the system being assessed.
Ask what is included in the price: parts, labor, any electrical coordination and post-repair testing. A price for a new mitigation installation is not a dependable estimate for an existing-system repair.
- Confirm the part and labor scope.
- Ask about applicable warranty coverage.
- Clarify whether a separate test is recommended.
What Air Sense customers say
Excerpts from Google reviews of Air Sense Environmental, quoted as written. Reviewer names are withheld; each link opens the full review on Google.
“We had Jake come out for a service call for our mitigation system. He quickly troubleshot the issue down to improper vent pipe installation by the home builder.”
Google review, April 2026 · Read the full review on Google
“Our fan on our Radon equipment broke down and the company that installed it originally went out of business. … Jake had to rework some of the piping before replacing the fan.”
Google review, July 2024 · Read the full review on Google
“I had a radon fan replaced. He was friendly, knowledgeable, and he showed me a couple pics of the piping in the attic.”
Google review, January 2024 · Read the full review on Google
See all 167 Google reviews of Air Sense Environmental (rated 5.0 as of October 10, 2026)
Questions before you book
No. Fan operation and pressure readings describe the equipment. A radon test measures the concentration indoors.
Do not use routine shutdown as a noise solution. Arrange assessment and follow the manufacturer's safety instructions if a fault is suspected.
Yes. Send the address, symptoms and accessible photos. Air Sense can tell you what else is needed to assess the system.
Common signs are a silent fan, a manometer whose fluid levels have evened out, an alarm, a new noise or vibration, and a radon test result higher than the last one. Any of these is a reason to arrange an assessment.
There is no universal replacement date. Operating conditions, the model and how long it has run all matter, so replace a fan when it fails or is diagnosed as failing rather than on a fixed calendar.
Most repairs use a replacement radon fan matched to the system, PVC pipe and fittings, rubber couplings, sealant for slab and sump openings, and a new manometer or alarm where needed.
Checking the manometer and confirming the fan has power are reasonable owner checks. Fan replacement, electrical work and pipe changes affect safety and performance, so have them assessed by a qualified radon professional.
Retest on the schedule the repair proposal names. If the result is still elevated, the system may need more suction, sealing or a design change, so share the full report with the contractor.
Yes. A new fan restores the equipment; only a follow-up radon test confirms the indoor level. EPA also recommends retesting a mitigated home at least every two years.