# The Best Keystone Dehumidifiers > Keystone is the budget badge with a surprisingly strong reliability score. Here's which model to buy, and the old recall to rule out before buying used. Canonical: https://www.enthusiastreview.com/best/best-keystone-dehumidifier/ Last updated: 2026-11-05 Published: 2026-09-06 Category: Brands Publisher: Enthusiast Review A **Keystone dehumidifier** is one of the least expensive ways to get a name-brand unit at Home Depot, Lowe's, Amazon or Best Buy. Like GE, Frigidaire and hOmeLabs, Keystone is built by Midea, one of the world's largest appliance makers, and the current KSTAD lineup covers everything from a bedroom to a full basement in 22-, 35- and 50-pint sizes, with a pump option at the top. There are two things most listings don't mention. The good news: Consumer Reports' latest brand survey puts Keystone in its top predicted-reliability tier. The caution: in 2016, the CPSC recalled 3.4 million Midea-built dehumidifiers sold under more than 50 brand names, Keystone included. That recall covers units sold from 2003 through 2013, not today's models — but it matters if you're buying used. We compared the current lineup using Keystone's published specs, ENERGY STAR listings, CPSC records, Consumer Reports' survey data and owner reviews. Here's what to buy. ## Our top picks - **Best overall:** Keystone 50-Pint — [check price on Amazon](https://www.amazon.com/s?k=Keystone%2050-Pint%20Dehumidifier%20with%20Electronic%20Controls%20KSTAD504F%2FKSTAD504G&tag=sktiger-20) - **Best with a pump:** Keystone 50-Pint Pump — [check price on Amazon](https://www.amazon.com/s?k=Keystone%20KSTAD506PG&tag=sktiger-20) - **Best for a bedroom or apartment:** Keystone 22-Pint — [check price on Amazon](https://www.amazon.com/s?k=Keystone%2022-Pint%20Dehumidifier%20KSTAD224F%2FKSTAD224E&tag=sktiger-20) - **Best for mid-size rooms:** Keystone 35-Pint — [check price on Amazon](https://www.amazon.com/s?k=Keystone%2035-Pint%20Dehumidifier%20KSTAD354F%2FKSTAD354G&tag=sktiger-20) The **Keystone 50-Pint with Electronic Controls** is the best Keystone for most basements and large rooms, with a low price per pint and full-basement coverage. ## 1. Keystone 50-Pint Dehumidifier with Electronic Controls (KSTAD504F/KSTAD504G) — Best overall [Check price on Amazon](https://www.amazon.com/s?k=Keystone%2050-Pint%20Dehumidifier%20with%20Electronic%20Controls%20KSTAD504F%2FKSTAD504G&tag=sktiger-20) **Pros** - Rated for up to 4,500 sq ft - ENERGY STAR certified - Auto-defrost for cool basements - Turbo mode and 24-hour timer - One of the lowest costs per pint around **Cons** - No pump - Basic styling and controls **Why we picked it:** It covers a full basement or large finished room for about what some brands charge for a 35-pint unit. Auto-defrost keeps it working on cool basement floors, and turbo mode speeds up the initial pull-down after a wet spell. **Performance:** Keystone rates it at 50 pints a day for up to 4,500 square feet. You can empty the bucket or connect a hose for gravity draining to a floor drain. The F and G suffixes mark production revisions of the same basic unit. Compare it against other big units in our [best 50-pint dehumidifier](https://www.enthusiastreview.com/best/best-50-pint-dehumidifier/) guide. | Spec | Value | | --- | --- | | Capacity | 50 pints/day | | Coverage | Up to 4,500 sq ft | | Drainage | Bucket or gravity hose | | Low-temp operation | Auto-defrost | | Efficiency | ENERGY STAR | ## 2. Keystone 50-Pint Dehumidifier with Built-In Pump (KSTAD506PG) — Best with a pump [Check price on Amazon](https://www.amazon.com/s?k=Keystone%20KSTAD506PG&tag=sktiger-20) **Pros** - Built-in pump pushes water up and out - Same 4,500 sq ft rating as the standard 50-pint - ENERGY STAR certified - No bucket to empty **Cons** - Costs noticeably more than the non-pump model - Pump hose needs periodic checks for kinks **Why we picked it:** If the unit can't sit near a floor drain, the pump is worth paying for. It lifts water to a utility sink or out a basement window, so the dehumidifier runs for weeks without attention. **Performance:** It's the same 50-pint, 4,500-square-foot unit with a condensate pump added. The extra cost only makes sense if there's no drain below the unit; otherwise, the standard model with a gravity hose does the same job for less. For pump models from other brands, see our [best dehumidifier with pump](https://www.enthusiastreview.com/best/best-dehumidifier-with-pump/) guide. | Spec | Value | | --- | --- | | Capacity | 50 pints/day | | Coverage | Up to 4,500 sq ft | | Drainage | Built-in pump | | Efficiency | ENERGY STAR | | Best for | Basements without a drain | ## 3. Keystone 22-Pint Dehumidifier (KSTAD224F/KSTAD224E) — Best for a bedroom or apartment [Check price on Amazon](https://www.amazon.com/s?k=Keystone%2022-Pint%20Dehumidifier%20KSTAD224F%2FKSTAD224E&tag=sktiger-20) **Pros** - Right-sized for a single room - Auto shutoff and 24-hour timer - Keystone's least expensive model **Cons** - Too small for a basement - Price sometimes close to the 35-pint **Why we picked it:** For a bedroom, office or small apartment, a 22-pint unit is all you need, and this one includes the essentials without padding the price. **Performance:** Keystone rates it for up to 1,500 square feet, though it's most at home in one closed room. Auto shutoff stops it when the bucket fills so it can't overflow, and the timer lets you run it while you're out. Our [best budget dehumidifier](https://www.enthusiastreview.com/best/best-budget-dehumidifier/) guide has other affordable small-room picks. | Spec | Value | | --- | --- | | Capacity | 22 pints/day | | Coverage | Up to 1,500 sq ft | | Auto shutoff | Yes | | Timer | 24-hour | | Best for | Bedroom, office, apartment | ## 4. Keystone 35-Pint Dehumidifier (KSTAD354F/KSTAD354G) — Best for mid-size rooms [Check price on Amazon](https://www.amazon.com/s?k=Keystone%2035-Pint%20Dehumidifier%20KSTAD354F%2FKSTAD354G&tag=sktiger-20) **Pros** - More capacity than the 22-pint for damp rooms - Rated for up to 3,000 sq ft - Same warranty structure as the rest of the line **Cons** - Similar price to the 50-pint during sales - No pump option **Why we picked it:** It fills the gap between a bedroom unit and a basement unit — ideal for a large primary suite, home gym or laundry room that runs damper than the rest of the house. **Performance:** Keystone rates it at 35 pints a day for up to 3,000 square feet. Watch the price: when the 50-pint goes on sale, it can cost about the same, and the bigger unit will run less to hit the same target. Our [dehumidifier size guide](https://www.enthusiastreview.com/guides/dehumidifier-size-guide/) helps you decide which tier fits. | Spec | Value | | --- | --- | | Capacity | 35 pints/day | | Coverage | Up to 3,000 sq ft | | Drainage | Bucket or gravity hose | | Type | Compressor | | Best for | Large room, laundry, gym | ## Keystone dehumidifiers, by the numbers - **Top tier** — Keystone's predicted-reliability score in Consumer Reports' latest brand survey - **3.4M** — Midea-built dehumidifiers, Keystone among them, recalled in 2016 - **2003–2013** — Sales window covered by that recall Consumer Reports' survey drew on 11,944 members who bought 13,632 dehumidifiers between 2014 and 2025, and only four of 23 brands — Keystone, Midea, Toshiba and Perfect Aire — earned the top reliability score. Because that window starts after the recall cutoff, it reflects current-generation units. | Model | Capacity | Rated coverage | Pump | Best for | | --- | --- | --- | --- | --- | | KSTAD224F/E | 22 pints/day | 1,500 sq ft | No | Bedroom, apartment | | KSTAD354F/G | 35 pints/day | 3,000 sq ft | No | Large or damp room | | KSTAD504F/G | 50 pints/day | 4,500 sq ft | No | Basement with a drain | | KSTAD506PG | 50 pints/day | 4,500 sq ft | Yes | Basement without a drain | ## How we pick Keystone dehumidifiers We don't lab-test. We compared Keystone's published capacity and coverage ratings, confirmed ENERGY STAR certification, checked every model family against CPSC recall notices and weighed Consumer Reports' survey-based reliability data alongside patterns in owner reviews, such as noisy fans, leaky buckets or early compressor failures. Since all four current models share the same platform and warranty, our ranking mostly comes down to fit: which unit gives the most useful capacity for each kind of room at the lowest running and purchase cost. ## What to look for in a Keystone dehumidifier - **Coverage matched to your space:** The 22-, 35- and 50-pint tiers map to 1,500, 3,000 and 4,500 sq ft. Measure first, and size up for a musty basement. - **A pump only if you need it:** If there's a floor drain beneath the unit, skip the pump and save the difference. - **Auto-defrost for basements:** Cool basement air can frost the coils. The 50-pint models handle that automatically. - **The model number on used units:** Anything sold between 2003 and 2013 should be checked against CPSC.gov before you plug it in. - **A separate hygrometer:** Budget built-in sensors can read a few points off. A cheap standalone meter confirms you're in the 30–50% range. ## The Keystone recall: what to check before buying used In 2016, GD Midea Air Conditioning Equipment recalled roughly 3.4 million dehumidifiers in 25- to 75-pint sizes sold under more than 50 brand names, including Keystone, GE, Frigidaire, Danby and Midea itself. The units were sold nationwide from January 2003 through December 2013, and the CPSC received 38 reports of overheating, smoking or fire, with about $4.8 million in property damage. Today's KSTAD-series units with 4-digit model codes postdate that window. Older Keystone models — including earlier B-suffix units such as the KSTAD50B — come from a previous generation, so if you own one or are eyeing one secondhand, check the exact model number and manufacture date against CPSC.gov first. > **A different recall:** Don't confuse this with the Gree-manufactured recall that affected Danby and several other brands. That one is covered in our [best Danby dehumidifier](https://www.enthusiastreview.com/best/best-danby-dehumidifier/) guide. ## Keystone dehumidifier manual, warranty and care - **Manual:** Keystone posts owner's manuals on its website, and retailer product pages often link a PDF. Search by the full model number from the label on the back of the unit. - **Warranty:** One year of full parts and labor on the unit, plus extended coverage of two to five years on the sealed system (compressor and condenser), depending on the model. - **Filter:** Slide out and rinse the washable mesh filter every two weeks of regular use; the unit works harder and pulls less water when it's clogged. - **Not pulling water?** Check the filter, the room temperature and whether the bucket is seated. Our [dehumidifier not collecting water](https://www.enthusiastreview.com/guides/dehumidifier-not-collecting-water/) guide covers the rest. ## The bottom line The **Keystone 50-Pint with Electronic Controls** is the best Keystone dehumidifier for most homes, covering a full basement at a very low cost per pint. Choose the **KSTAD506PG** if there's no drain nearby, the **22-Pint** for a bedroom or apartment, and the **35-Pint** for a large or damp room in between. Buy new, and check any secondhand unit against CPSC.gov. If you're cross-shopping, Keystone's reliability-tier sibling is covered in our [best Toshiba dehumidifier](https://www.enthusiastreview.com/best/best-toshiba-dehumidifier/) guide. ## Frequently asked questions ### What is the best Keystone dehumidifier? For most basements and large rooms, the Keystone 50-Pint with Electronic Controls (KSTAD504F/G), rated for up to 4,500 sq ft. If there's no floor drain nearby, the KSTAD506PG adds a built-in pump. For a bedroom or apartment, the 22-Pint (KSTAD224F/E) is the right size. ### Who makes Keystone dehumidifiers? Midea. Keystone is one of many brand names built by GD Midea Air Conditioning Equipment, alongside others like GE, hOmeLabs and Frigidaire. It's a common arrangement in the appliance industry. ### Are Keystone dehumidifiers reliable? According to Consumer Reports' latest brand survey of dehumidifiers bought between 2014 and 2025, Keystone earned the top predicted-reliability score, one of only four brands out of 23 to do so. ### Was the Keystone KSTAD50B recalled? Keystone units sold from January 2003 through December 2013 were part of the 2016 Midea recall, which covered many sizes and model numbers. The KSTAD50B belongs to that earlier generation, so check your unit's exact model number and date code against CPSC.gov before using it. ### Where can I find a Keystone dehumidifier manual? On Keystone's website or the retailer's product page, usually as a downloadable PDF. Use the complete model number from the rating label on your unit to make sure you get the right version. ### How long is the Keystone dehumidifier warranty? One year of full parts-and-labor coverage on the unit, plus extended sealed-system coverage of two to five years depending on the model. ### Should I buy the Keystone 50-pint with or without a pump? Get the pump model (KSTAD506PG) if the unit will sit where there's no drain below it. If it's near a floor drain or you don't mind emptying the bucket, the KSTAD504 does the same 50-pint job for less. ## Related guides - [The Best Dehumidifier Brands, Ranked](https://www.enthusiastreview.com/best/best-dehumidifier-brands/) - [The Best 50-Pint Dehumidifiers](https://www.enthusiastreview.com/best/best-50-pint-dehumidifier/) - [The Best Midea Dehumidifiers: Every Cube Model Ranked](https://www.enthusiastreview.com/best/best-midea-dehumidifier/) - [The Best Toshiba Dehumidifiers](https://www.enthusiastreview.com/best/best-toshiba-dehumidifier/) - [The Best Budget Dehumidifiers](https://www.enthusiastreview.com/best/best-budget-dehumidifier/) - [The Best Basement Dehumidifiers for Mold, Damp and Musty Smells](https://www.enthusiastreview.com/best/best-dehumidifier-for-basement/) --- *Enthusiast Review researches products against DOE ratings, ENERGY STAR data, manuals, CPSC recalls and owner reviews; it does not run a test lab. Amazon links are affiliate links (tag sktiger-20).*