Can you service a system you did not install?

Yes. We work on existing systems regardless of who originally installed them.

How long does a fan last before it needs replacing?

Most radon fans run five to ten years before needing replacement, depending on the model and how continuously it operates.

Service · Des Moines, IA

Radon System Repair & Maintenance in Des Moines, IA

Fan replacement, pipe repair, and system checks for an existing radon mitigation system, whether we installed it or someone else did.

Call (515) 461-7572 Quick Quote

Quick quotes

Send us your details and we get back to you fast with a written quote.

Quick scheduling

We do not make you wait weeks for a test or an install date.

Locally owned

One shop, one service area, no franchise call center.

A radon mitigation system is not a one-time install and forget. Fans wear out, pipes get damaged during other home projects, and a system that worked fine when it was installed can quietly stop pulling the vacuum it needs to. We repair and maintain existing systems across Des Moines, whether or not we were the ones who put it in originally.

The gauge on your system is the easiest way to catch a problem early, and part of what we do on a maintenance visit is confirm that gauge is telling the truth about what is actually happening under your slab.

gallery-05.jpg 900 × 900 Radon mitigation project photo

Signs your system needs attention

A manometer reading that has flattened out or moved to zero is the clearest sign something has changed. A fan that has gone quiet, a musty smell that was not there before, or physical damage to the exterior pipe from lawn equipment or a remodel are all reasons to get a system checked rather than assume it is still doing its job.

Fan replacement

Radon fans typically last five to ten years depending on the model and how continuously they run. When one fails, we match the replacement to your system's actual suction requirements rather than just swapping in whatever fan is on hand, since an undersized fan will not maintain the vacuum your foundation needs.

Pipe and seal repair

Cracked pipe sections, disconnected joints, and seals around the slab penetration or sump pit that have degraded over time all undercut a system's performance even if the fan itself is working fine. We check the whole path, not just the part that is obviously broken.

Routine system checks

For homeowners in Polk County who want peace of mind, a periodic check confirms the manometer reading, inspects the fan and pipe for wear, and verifies the seals are still intact, catching small problems before they turn into a radon level creeping back up.

Radon System Repair & Maintenance across Polk County

We run this work throughout Des Moines and the surrounding towns. In places like Des Moines, West Des Moines and Ankeny, no two elevations are exactly the same, so every job gets scoped on site rather than over the phone.

Common questions

Radon System Repair & Maintenance questions we hear in Des Moines

A quick visual and gauge check is worth doing every year or two, and any time you notice a change in the manometer reading, a quiet fan, or damage to the exterior pipe.

What to expect

How working with Capitol Radon actually goes

A real written quote

Tell us about your home and you get a written quote back fast, not a number guessed over the phone or read off a photo.

A technician who explains the plan

Before anything gets installed, you will know why the system is laid out the way it is for your specific foundation, not a generic setup.

A result you can verify

We do not just tell you the fan is running. A post-mitigation test confirms your actual indoor radon level came down.

Get a straight answer on your wall

Free on-site estimates across Des Moines and Polk County. We look at the actual wall, measure the elevations and send a written scope — no charge and no sales pitch.

(515) 461-7572 Request an estimate