Radon mitigation done right — the first time.
5280 Radon Mitigation designs, installs, and services radon systems for Colorado homeowners and real estate transactions. Certified installers, a firm written price, and a post-installation test that proves the system works.
Why Colorado homeowners call us
- Over 10,000 radon fans installed
- 4.9 stars across 300+ Google reviews
- NRPP / NEHA certified & DORA licensed
- Authorized RadonAway dealer
- One-day installation, permits handled
Radon is common in Colorado. Mitigation is straightforward.
Colorado's geology pushes radon — a colorless, odorless radioactive gas — up through the soil and into homes through slab cracks, sump pits, and floor drains. The EPA action level is 4 pCi/L. When a test comes back at or above that number, a properly designed system brings it back down to a safe level and keeps it there.
Radon mitigation
Sub-slab, crawl space, and block-wall systems designed for your foundation and built in a single day.
Radon testing
Short-term test kits and certified 48-hour testing for real estate transactions.
Continuous monitors
Know your number every day with a monitor installed and calibrated by our team.
Clear pricing
What drives the price of a system, and what our quote includes — in writing.
System photos
See how our systems look on real Denver metro homes, inside and out.
Reviews
What 300+ homeowners, agents, and inspectors say about working with us.
What happens when you call
A simple process with no surprises on price or schedule.
Test
Short-term test, or we review the results you already have. If the level is high, we get to work.
Quote
A written, fixed price based on your foundation — not a range that grows later.
Install
Most homes are finished in one day. We handle the permit, the routing, and the cleanup.
Verify
We come back and test. The system earns its place with a number, not a promise.
Where we work
We install and service radon systems across the Denver metropolitan area.
Common questions
How much does a radon system cost?
Most single-family systems land in a predictable range, and your quote is fixed before we start. Complexity — foundation type, the number of suction points, and where the fan can be vented — is what moves the number. See our cost page for the details.
How long does installation take?
The large majority of homes are finished in a single day. Larger homes, crawl spaces, or homes needing more than one suction point may need a second day, and we tell you that before you book.
Will the system be loud?
A modern radon fan is quiet enough that most homeowners do not notice it from inside the house. We choose the fan and its location with noise in mind.
Does a mitigation system need maintenance?
Very little. The fan is the only moving part and typically lasts five years or more; a monitor or a periodic test confirms the system is still holding your level down.
Ready for a firm, fixed-price quote?
Tell us about your home and we will send a written estimate — no pressure, no surprises.