Radon mitigation FAQs
Straight answers to the questions we hear most from Colorado homeowners looking into radon mitigation — costs, timelines, and what actually happens on install day.
| Question | Answer |
|---|---|
| What is radon mitigation? | Radon mitigation is the process of reducing radon gas levels inside a home, most commonly with an active sub-slab depressurization system — a pipe and fan that pull radon from beneath the foundation and vent it safely above the roofline before it can enter living space. |
| How do I know if I need a radon mitigation system? | If a radon test — from a DIY kit, a home inspector, or a real estate transaction test — comes back at or above the EPA's action level of 4.0 pCi/L, mitigation is worth doing. Some homeowners choose to mitigate at lower levels too; we'll give you an honest read on your specific number. |
| How much does radon mitigation cost? | Cost depends on your foundation type, square footage, and how the crawlspace or slab is laid out — there's no honest flat rate. We quote after reviewing your test results and walking the foundation, not before. |
| How long does installation take? | Most sub-slab depressurization systems are installed in a single day, with minimal disruption to the house. |
| Will a mitigation system work on any foundation type? | Sub-slab depressurization handles slab-on-grade and basement foundations. Homes with a crawlspace typically need a sealed vapor barrier with suction drawn from beneath it instead. We size the approach to your specific foundation. |
| Is a radon mitigation system noisy or ugly? | A properly installed fan runs quietly, and the exterior pipe routing is planned to stay out of sight wherever possible — along a back or side wall rather than the front of the house. |
| How much does a mitigation system reduce radon levels? | A correctly designed system typically reduces indoor radon by 90% or more, often bringing a home well below the EPA's 4.0 pCi/L action level. |
| How do I know the system actually worked? | Every install we do is followed by a verification test to confirm the number actually dropped — that's built into the job, not an upsell. |
| Does a mitigation system need ongoing maintenance? | Mostly just an occasional glance at the system's pressure gauge to confirm the fan is still running. Fans typically last 5–10+ years before needing replacement. |
| I already have a mitigation system from another company — can you service or inspect it? | Yes. We can inspect, repair, or replace an existing system, including ones we didn't originally install. |
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