Comparing Radon Mitigation Companies in York, PA (2026)

Seven firms actually serve York County. Here is each one.

Most “comparison” pages list nobody. This one lists every firm a York County homeowner can realistically hire in 2026, with what is publicly verifiable about each: the Pennsylvania DEP certification register, Google review records, and — most useful of all — the price record. Pennsylvania requires certified contractors to report every mitigation system they install to PA DEP, so York County has a public record of 986 systems installed between 2024 and 2026 with their actual prices. These are prices paid, not estimates.

What York County systems actually cost (PA DEP record, 2024–2026)

The spread of those 986 York County prices: 5.2% under $700; 15.6% between $700–$900; 19.4% between $900–$1,100; 28.2% between $1,100–$1,300; 23.2% between $1,300–$1,600; 8.4% above $1,600. Seven in ten systems cost under $1,300 and nine in ten under $1,600. If a quote for a standard basement-slab system lands far above that band, the difference should come with an explanation in writing — crawl-space membrane, two suction points, or roofline-only routing all push the number up legitimately.

Running costs stay small: $5–$10 a month of electricity for the fan, and fans last roughly ten years before a $300–$600 replacement.

The firms, side by side

Review counts and ratings drift weekly; the counts above are Google records retrieved in late 2026. One entry deserves a warning rather than a table row: Allied Home Inspections advertises radon work in York County but does not appear in the DEP register at retrieval time — whatever any firm claims, the register is the check.

How the local specialist and the national franchise really differ

The dataset shows what most York homeowners already suspected: with a median of $1,150, nobody is dramatically cheaper once the system is standard. The real differences:

• Who quotes vs who installs. SWAT scales through offices and crews; Absolute is owner-run — the person quoting has been doing York basements since 1999. Both models work; they fail differently (franchise: communication chains; one-man shop: availability, see the unanswered-call reviews).
• The retest. Absolute includes a 24-hour retest as policy; with a franchise it is often subcontracted or an extra line. The post-mitigation number is the only proof the system works — get it in writing whoever you hire.
• Design depth. A firm that does radon only tends to price after checking sub-slab communication; high-volume operators quote on foundation type from the listing photos. On a karst-influenced carbonate lot (the York Valley belt), the diagnostic matters more than the brand.

The five checks before you sign with anyone

• DEP firm certification number, quoted on the estimate itself — verifiable in the PA DEP Radon Services Directory or the hotline (800-237-2366).
• A written whole-job price, before drilling starts.
• The post-mitigation test included, with the result delivered in writing.
• A plan for a still-high retest: who fixes it, who pays.
• A sealed sump lid you can still open, and a manometer on the pipe.

Context that makes the choice matter: the PA DEP open dataset records 98,845 York County radon tests, and 52.5% of them read at or above the 4.0 pCi/L action level (against 33.7% statewide). This county sits in EPA Radon Zone 1 — the system you buy is not optional equipment, it is the fix for a county-wide geology problem.