Crawl Space Systems in Lennox, SD

Call (605) 210-7667 Lennox is 23 miles from Sioux Falls. You hear back from a person, not an autoresponder, within one business day. Call before 3pm on a weekday and it is usually the same afternoon.

Partial basement over crawl is close to a default configuration in Lennox, and it is the arrangement that produces the most disappointing test results after a poorly scoped mitigation. The basement gets a system, the crawl gets ignored, and the number barely moves.

What we see in Lennox

Mid-century housing near the city park and along Main Street shows this repeatedly. Farmsteads on Highway 17 and Highway 44 often have larger crawl areas under rambling additions. Two suction points on one fan, one under the slab and one under the membrane, is the standard answer.

Practical notes for Lennox homeowners

If you have already had a system installed and it did not get you under 4.0, the crawl space is the first place to look. That diagnosis is usually free, because it takes one look at where the pipe goes.

Crawl Space Systems in Lennox: the technical part

Partial basement over crawl is close to the default here, and it is the single most common reason a previously mitigated Lennox house still tests high. The basement half gets a conventional sub-slab system, the crawl half gets ignored, and the fan runs perfectly while pulling on only part of the building. The diagnosis is usually a thirty-second look at where the pipe goes.

What the job looks like in Lennox

Two pickups, one fan. Membrane over the crawl, suction beneath it, sub-slab point under the basement, both joined into a single riser with a wye above the highest point so condensation drains back correctly. The fan is sized for the combined system rather than either half, which is the part that gets missed when a crawl is added to an existing install.

The ground under Lennox

Lennox sits on the till plain between the Big Sioux and the Vermillion drainage, on deep agricultural soil. Deep soil does not mean low radon, it means the gas has a longer path and more of it accumulates before it finds one.

Lennox radon questions

I already have a system and I still test high. Why?

Look for a crawl space. If your house has one and the pipe does not go into it, that is almost certainly your answer and it is fixable without starting over.

Can you add a crawl pickup to somebody else's system?

Yes, regularly. We check whether the existing fan can carry both, and step it up if not. The existing pipe usually stays.

Need crawl space radon mitigation in Lennox? Call (605) 210-7667 or send the form. Full detail on how these systems work is on our crawl space radon mitigation page, and every radon service we offer in Lennox is listed on the Lennox page.