We compared 9 whole-house and crawl-space dehumidifiers on honest AHAM capacity, coverage, drainage and price — so you can skip the spec-sheet games and buy dry air with confidence.
One clear winner for each kind of space. Tap a card for the full review.
Whole homes up to 5,500 sq ft — the one-unit answer for humid-climate houses with a ducted HVAC tie-in.
Crawl spaces up to 2,600 sq ft with no floor drain nearby — the built-in pump pushes condensate up and out.
Budget crawl space and basement jobs up to 1,300 sq ft — the cheapest way into a real pro-grade unit.
Low-clearance crawl spaces where 12 inches of height is all you get — it hangs between floor joists.
Swipe for more picks →
When a portable is enough — and when it's false economy.
| Model | Score | AHAM pints/day | Marketed as | Coverage | Drainage | Energy Star | Price tier | Buy |
|---|---|---|---|---|---|---|---|---|
| AprilAire E100 Pro | 9.1 | 100 | 100 (honest) | 5,500 sq ft | Gravity drain | Yes | Price tier: Premium, $2,000–$3,000 | Check price of the AprilAire E100 Pro on Amazon |
| AlorAir Sentinel HDi90 | 9.0 | 90 | 198 (saturation) | 2,600 sq ft | Built-in condensate pump | — | Price tier: Mid-range, $1,000–$2,000 | Check price of the AlorAir Sentinel HDi90 on Amazon |
| AprilAire E070 Pro | 8.9 | 70 | 70 (honest) | 2,200 sq ft | Gravity drain | Yes | Price tier: Mid-range, $1,000–$2,000 | Check price of the AprilAire E070 Pro on Amazon |
| AprilAire E130 | 8.8 | 130 | 130 (honest) | 7,200 sq ft | Gravity drain | Yes | Price tier: Premium, $2,000–$3,000 | Check price of the AprilAire E130 on Amazon |
| AlorAir Sentinel HD90 | 8.8 | 90 | 198 (saturation) | 2,600 sq ft | Gravity drain | Yes | Price tier: Mid-range, $1,000–$2,000 | Check price of the AlorAir Sentinel HD90 on Amazon |
| AprilAire E080 | 8.7 | 80 | 80 (honest) | 4,400 sq ft | Gravity drain | Yes | Price tier: Mid-range, $1,000–$2,000 | Check price of the AprilAire E080 on Amazon |
Capacity is compared at AHAM conditions (80°F, 60% RH). "Marketed as" shows the box number and which test produced it — see our AHAM vs saturation guide.
Enter your square footage, space type and dampness to get the AHAM pints/day you need.
Size my spaceSee what each model costs per year in electricity at your kWh rate.
Do the mathThe true 5-year cost of a portable versus a pro-grade whole-house unit.
Compare costsChoosing a whole-house dehumidifier comes down to 5 decisions: AHAM sizing, drainage, ducted vs standalone, climate/space type, and budget. Cheat-sheet style guide with real numbers.
Know the numbersAHAM pints (80°F/60% RH) are the only fair way to compare dehumidifiers. Learn why saturation marketing numbers run ~2x higher and how to translate any box claim into real capacity.
Head-to-headHead-to-head brand comparison: AprilAire's honest ratings and pro channel, AlorAir's value and pump options, Santa Fe's build quality and filtration. Who should buy which.
Crawl spacesWhy crawl spaces need dedicated dehumidifiers, how encapsulation and drainage planning work, and the top picks for 2026: AlorAir HDi90, AprilAire E070 Pro, Santa Fe Compact70, AlorAir HD55.
SizingSize your whole-house dehumidifier by climate zone: capacity tables for the Gulf Coast, Southeast, Mid-Atlantic, Midwest, and arid regions, plus dampness multipliers and the 20–30% headroom rule.
Cost comparisonPortable 50-pint vs whole-house dehumidifier compared on upfront cost, energy, coverage, and lifespan — plus when a portable is enough and when it's false economy.
We earn a commission when you buy through our links, but it never changes which dehumidifier we recommend.
How we score unitsEvery capacity compared at 80°F/60% RH. Saturation marketing numbers get translated, not trusted.
Capacity, coverage and drainage claims verified across manufacturers, spec sheets and owner reports.
Calculators built from real specs turn "what size?" into a number, not a guess.