Radon System Inspection & Repair in Saint Augustine, FL

A radon system can stop protecting your home without any obvious sign. If the liquid in your manometer sits level, if the fan has gone silent, or if a retest shows levels climbing back toward 4.0 pCi/L, the system is not working. An inspection finds the cause. Repair usually means a new fan, resealing, or rerouting the vent.

How can you tell your radon system has failed?

Radon has no smell and no taste, so a dead system will not announce itself. These are the signals worth knowing:

• The manometer columns are level. This is the clearest sign of all, and it means there is no suction.
• The fan is silent, or the faint vibration you used to feel on the pipe is gone.
• A retest comes back at or above 4.0 pCi/L after the system had been working.
• The vent pipe is visibly cracked, disconnected, or a glued joint has separated.
• The fan is more than ten years old and has never been replaced.
• New cracks appeared in the slab, or someone cut into it during a renovation.

What is the manometer telling you?

The manometer is the small clear U-shaped tube attached to your vent pipe, usually holding colored liquid. When the system is pulling suction, the two liquid columns sit at different heights, and that difference is the pressure the fan is generating. When they settle level with each other, there is no pressure difference, which means no suction, which means no protection. It is the cheapest diagnostic you own and it takes two seconds to read.

What usually causes a system to fail?

• Fan motor failure. By far the most common cause, and the most straightforward fix.
• Cracked or disconnected pipe, often from settling, impact, or a poor original glue joint.
• Sealant degradation around the suction point, slab cracks, or plumbing penetrations.
• New slab penetrations from a renovation, which give radon a fresh path in and bleed off suction.
• A blocked or badly located discharge, such as a vent terminating too close to a window.
• An undersized or poorly designed original system, common with DIY or unlicensed installs.

What an inspection includes

We read the manometer, confirm the fan is actually moving air rather than merely humming, inspect the full pipe run for cracks and separated joints, check the discharge point and its clearances, and examine the seals at the suction point and around slab penetrations. Then we run a diagnostic radon test, because the only real proof that a system works is the number in the air.

Repair or replace?

Most of the time it is a repair. A failed fan is often a same-visit swap, and resealing is straightforward. Replacement enters the conversation when the original system was undersized for the house, when the discharge was never placed correctly, or when a renovation changed the slab enough that the existing suction point can no longer cover it. We tell you which one you are looking at, and why, before we touch anything.

Why levels can rise years after a system was installed

Houses move. Slabs develop new hairline cracks, sealant hardens and pulls away, fans lose efficiency long before they die outright, and renovations open paths nobody thought about. A system that measured 1.2 pCi/L on installation day can drift upward across a decade. This is precisely why a retest every couple of years, plus the habit of glancing at the manometer, is worth more than any warranty certificate.

Why choose Saint Augustine Radon Pros?

We focus on one thing: radon mitigation for homeowners in Saint Augustineand the surrounding area. Call (904) 395-5498 and we will walk you through your options, what it costs, and how soon we can get to you.