Crawlspace Lab

How We Evaluate

We're upfront about what this methodology is and isn't. We do not run units through a climate-controlled lab, and we don't test them by hand — that's a real limitation, and any site claiming otherwise for a catalog this size without showing you the lab is not being straight with you. What this site does instead is verification work, and here's exactly what that means:

1. Spec verification against the source

Every number in our spec tables — capacity, wattage, coverage, noise, dimensions, warranty — is checked against the manufacturer's own data sheet or installation manual, not a retailer's marketing copy. A product stays out of our review queue until that verification is complete.

2. Computed, documented operating cost

We calculate annual operating cost from rated wattage, an assumed duty cycle, and your region's actual electricity rate — and we show the assumption on the page, not just the number. You can check our math.

3. Real climate-zone data, not generic advice

Sizing and run-time guidance is tied to IECC climate zone data — humidity load and electricity cost genuinely differ by region for this product category, so a Gulf Coast recommendation and a Mountain-West recommendation should differ too.

4. What we don't have: hands-on testing

We have not operated any of the units on this site. Nobody here has installed one in a crawl space, run it for a season, or measured its output. Every figure we publish comes from manufacturer documentation or independent measured data — never from a unit we've used — and we would rather say that plainly than let a review's tone imply otherwise.

That's also why you won't find owner testimonials or durability verdicts here: we don't manufacture them, and we don't have them. Where we cite a figure about what real-world running costs look like, it's attributed to the published source it came from, not presented as something we observed.

What we don't do