Affiliate disclosure

What we participate in

Damp Down is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. As an Amazon Associate we earn from qualifying purchases. Our Associates tracking ID is dampdown-20, and every product link on this site carries it.

If you click one of those links and buy something, Amazon pays us a small percentage of the sale. The price you pay is exactly the same as it would be if you had gone to Amazon directly — the commission comes out of Amazon’s margin, not out of your pocket. You are never charged for using anything here.

Amazon’s affiliate cookie lasts 24 hours. If you click one of our links and then buy something entirely unrelated within a day, we may still earn a commission on it. We think you should know that, because most sites do not say it.

🔴 Prices and star ratings are Amazon's, captured on a date

Every price, star rating and review count shown on this site is Amazon’s own data, copied on the date stated on the page — currently 21 August 2026. It is not a live feed and it goes stale without us knowing. The figure on Amazon’s product page is the only one that binds anybody; check it before you buy. The same applies to availability, which can change hourly.

We show ratings because they are useful screening data — a unit with eleven reviews and a unit with four thousand are different propositions — not because we have assessed them.

Which is why we deliberately do not emit review or rating structured data. We publish no Review or aggregateRating markup, so no star rating from this site can ever appear beneath a search result as though it were ours. Those stars are Amazon’s customers’, we did not collect them, and dressing someone else’s ratings up as our own review score is exactly the misrepresentation that markup was created to prevent. We give up a more clickable search listing for it, on purpose. For the same reason we publish no Product or Offer markup: we are not the merchant, and our prices are a snapshot rather than the current price such markup promises.

🔴 We have never run these units

No unit recommended on this site has been tested by us. There is no test bench, no crawl space full of loaners, no logged trial. Where you see a dehumidifier recommended here, it was selected from published specifications plus computed sizing: the manufacturer’s tested capacity in pints per day, checked against the listing’s own detail table rather than its title, compared against the requirement our formulae produce for the space you described — both figures on the same rating scale.

That method is stated on every buying guide, including its limits, and our editorial policy names the things it cannot judge — multi-year reliability, real-world noise, what happens when you call the warranty line — and sends you to trade forums that pay us nothing for those. A page optimised purely for commission would not spend its space telling you what it does not know.

What it does not change

It does not change what we recommend, and the evidence we can offer is structural rather than a promise. Our tools return a unit because a stated rule selected it from your answers: change the area or the dampness and watch the pick change. The rule sizes on tested capacity, so when the smaller or cheaper unit clears your requirement, the smaller or cheaper unit is what comes out — and when the honest answer is that a dehumidifier is not your problem at all, because bulk water is arriving or the space is not sealed, we say that instead of recommending one anyway.

We also decline to rank on the number brands would most like us to rank on. Manufacturer coverage claims in square feet are not comparable between units — our own data has three 155-pint machines claiming 7,500, 6,000 and 6,000 square feet — so we size on pints per day and show coverage only with the brand’s name attached. That costs us the easiest and most flattering comparison table in the category.

What we do not do

No paid placements. No brand has paid to appear here, no brand has been shown our content before publication, and we have no sponsorships, gifted units or relationships with any manufacturer mentioned on this site.

No fabricated testing, and no invented reviewers. Everything here is written under the site’s own name. There is no fictional HVAC veteran with a headshot, which is a common practice in this category and one we think readers deserve to be protected from.

No hidden links. Affiliate links carry rel=“nofollow sponsored”, they are labelled where they appear, and this disclosure is linked from the footer of every page.

Questions

If something here looks like it was influenced by commission, tell us — see contact. We would rather correct a page than defend one. Details of what a click here exposes to Amazon, before and after, are in our privacy policy.