Quick Answer: The best Keystone dehumidifier for most basements and large rooms is the 50-Pint with Electronic Controls (KSTAD504F/KSTAD504G) — covers up to 4,500 sq ft for about $195-250. Need automatic drainage instead of a bucket? The 50-Pint with Built-In Pump (KSTAD506PG) does the same job for about $290-300. Before you buy secondhand, know this: Keystone was one of 50-plus brand names caught in a 2016 CPSC recall of Midea-manufactured dehumidifiers sold 2003-2013 — current KSTAD-series units aren’t affected, but an older unit needs a model-number check first.
Keystone is a budget-tier appliance brand sold at Home Depot, Lowe’s, Amazon, and Best Buy — and like several other names on this site (GE, hOmeLabs, Frigidaire), it’s actually built by Midea, one of the world’s largest appliance manufacturers. Before you compare capacities, there’s a fact most Keystone listings don’t mention: back in 2016, the Consumer Product Safety Commission recalled 3.4 million dehumidifiers manufactured by Midea across more than 50 brand names — Keystone among them — after 38 reports of fire and $4.8 million in property damage. The recall is limited to units sold between January 2003 and December 2013, so it doesn’t touch the current lineup below, but it’s exactly the kind of history worth checking if you’re eyeing a used or hand-me-down unit. Here’s what Keystone actually sells today, priced and specced.
Keystone dehumidifiers at a glance
| Model | Best for | Capacity | Coverage | Pump / Wi-Fi | Price |
|---|---|---|---|---|---|
| Keystone 22-Pint (KSTAD224F/KSTAD224E) | Best for a bedroom/apartment | 22 pints/day | Up to 1,500 sq ft | No / No | about $199-220 |
| Keystone 35-Pint (KSTAD354F/KSTAD354G) | Best for a mid-size room | 35 pints/day | Up to 3,000 sq ft | No / No | about $209-230 |
| Keystone 50-Pint Electronic Controls (KSTAD504F/KSTAD504G) | Best overall | 50 pints/day | Up to 4,500 sq ft | No / No | about $195-250 |
| Keystone 50-Pint with Built-In Pump (KSTAD506PG) | Best with pump | 50 pints/day | Up to 4,500 sq ft | Yes / No | about $290-300 |
Prices reflect current retail listings and shift often — check the live price on Amazon before ordering.
Keystone dehumidifiers by the numbers
- 3.4 million: dehumidifiers manufactured by Midea and recalled by the CPSC in 2016 across more than 50 brand names, Keystone included — sold nationwide from January 2003 through December 2013, per CPSC.gov.
- 38: reports of overheating, smoking, or fire tied to those recalled units, resulting in about $4.8 million in property damage before the recall was issued.
- Top-tier: Consumer Reports’ predicted-reliability rating for Keystone in its most recent brand survey (11,944 members, 13,632 dehumidifiers purchased 2014-2025) — Keystone shares that top score with only Midea, Toshiba, and Perfect Aire, out of 23 brands rated.
- 24-48 hours: how quickly mold can start forming on a damp surface, per the EPA — the reason matching real coverage (sq ft) to your room matters more than chasing the biggest pint number.
1. Keystone 50-Pint with Electronic Controls — Best Overall
Keystone 50-Pint Dehumidifier with Electronic Controls (KSTAD504F/KSTAD504G)
- Covers up to 4,500 sq ft — enough for a full basement or large finished room, at one of the lowest prices per pint on the site.
- Energy Star certified, with a 24-hour timer, auto-defrost, and turbo mode for faster initial pull-down.
- No pump — drains to the internal bucket or via gravity hose to a nearby floor drain.
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For a full field of large-capacity options across every brand, see our best 50-pint dehumidifier guide.
2. Keystone 50-Pint with Built-In Pump — Best With Pump
Keystone 50-Pint Dehumidifier with Built-In Pump (KSTAD506PG)
- Same 50-pint/4,500 sq ft capacity as the electronic-controls model above, plus a built-in pump that pushes water up and out through a hose.
- Worth the roughly $70-100 premium if the unit won't sit near a floor drain — no bucket to empty.
- Same Energy Star certification and 1-year unit warranty as the rest of Keystone's current lineup.
For pump-equipped alternatives from other brands at this price, see our best dehumidifier with a pump guide.
3. Keystone 22-Pint — Best for a Bedroom or Apartment
Keystone 22-Pint Dehumidifier (KSTAD224F/KSTAD224E)
- Sized for a single bedroom, home office, or small apartment rather than a basement.
- Auto-shutoff and a 24-hour timer come standard even at this entry price point.
- Keystone's cheapest current model, and one of the lowest-priced 22-pint units on the market.
For the full range of small-room picks across brands, see our best budget dehumidifier guide.
4. Keystone 35-Pint — Best for a Mid-Size Room
Keystone 35-Pint Dehumidifier (KSTAD354F/KSTAD354G)
- Steps up from the 22-Pint for a larger bedroom suite, home gym, or laundry room without jumping to the 50-pint tier.
- LED display and electronic controls on the "G" revision; the "F" revision uses simpler dial controls at a similar price.
- Same 1-year unit warranty plus extended sealed-system coverage as the rest of the lineup.
For how mid-size capacity tiers compare across brands, see our dehumidifier size guide.
The recall history Keystone’s listings don’t mention
One CPSC recall, confirmed directly on CPSC.gov, covers Keystone-branded dehumidifiers alongside dozens of other brand names:
- 2016: GD Midea Air Conditioning Equipment recalled roughly 3.4 million dehumidifiers — 25-, 30-, 40-, 50-, 60-, 65-, 70-, and 75-pint models — sold under more than 50 brand names including Keystone, GE, Frigidaire, Danby, Kenmore (Canada), and Midea’s own name. Units were sold nationwide, including at Amazon, Lowe’s, Menards, and PC Richard, from January 2003 through December 2013 for $100-$300. The CPSC received 38 reports of units overheating, smoking, or catching fire, with about $4.8 million in property damage.
This is a different recall than the Gree-manufactured platform recall covered in our best Danby dehumidifier guide — that one involved a different outside manufacturer building units for 13 brand names. The Keystone recall is tied directly to Midea’s own manufacturing of units sold through 2013. Keystone’s current KSTAD-series lineup — the models covered in this guide — falls well outside that window. The practical takeaway: buy new with confidence, but if you’re eyeing a used or estate-sale Keystone unit, check the exact model number against CPSC.gov before plugging it in.
How to choose a Keystone dehumidifier
- Size by coverage area (sq ft), not just the pint number. The 22-pint, 35-pint, and 50-pint tiers map to 1,500, 3,000, and 4,500 sq ft respectively — measure your space first.
- Check the model number before buying used. The 2016 Midea-manufacturing recall covers units sold 2003-2013; current KSTAD-series stock isn’t affected, but an older secondhand unit is a real risk worth ruling out.
- Pay for the pump only if you need it. The KSTAD506PG costs roughly $70-100 more than the non-pump 50-pint model for the same capacity — worth it only if there’s no floor drain nearby.
- Don’t assume “budget brand” means unreliable. Consumer Reports’ own recent survey puts Keystone in the top reliability tier alongside Midea, Toshiba, and Perfect Aire — a genuine data point, not just marketing.
- Compare against other budget brands before buying. Our best dehumidifier brands guide cross-checks Keystone against Midea, GE, and Frigidaire at similar prices.
The bottom line
The Keystone 50-Pint with Electronic Controls (about $195-250) is the best overall Keystone dehumidifier — enough coverage for most basements at one of the lowest prices per pint on the site. If you need the water removed automatically, the 50-Pint with Built-In Pump (about $290-300) does the same job hands-free. For a bedroom or apartment, the 22-Pint (about $199-220) is the right size and price. Whichever model you choose, buy new — and if you’re tempted by a secondhand deal, check the model number against CPSC.gov’s 2016 Midea-recall listing first. Compare the full field in our best dehumidifier pillar, size your space with our dehumidifier size guide, or confirm whether Amazon Prime is worth it for dehumidifier shoppers before you check out.