Best Crawl Space and Basement Dehumidifier: AlorAir Reviews and Buying Guide
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Damp crawl spaces and basements lead to musty smells, mold and damage. A crawl space or basement dehumidifier pulls that moisture out and drains it away on its own. Here are AlorAir's dehumidifiers compared by size and capacity, with today's sale prices, real buyer reviews and the model codes that work.
Quick picks
| Space up to… | Pick | Size | Price today |
|---|---|---|---|
| 1,000 sq ft |  Sentinel HD35P (70 PPD) | with pump | $372.88 was $466.11 |
| About 1,200 sq ft |  Sentinel HD55 blue (113 PPD) | WiFi | $499.36 $469.40 with our code |
| 1,300 sq ft |  Sentinel HD55S (120 PPD) | drain hose | $505.95 was $648.66 |
| 1,800 sq ft |  Galaxy 60 (145 PPD) | drain hose | $559.73 $526.15 with our code |
| Large crawl spaces |  Sentinel HDi90 ductable (198 PPD) | pump, ductable | $871.77 $828.18 with our code |
| Whole house, 3,000 sq ft |  Sentinel WHD 120 | 104 PPD | $1,699.00 was $1,999.00 |
AlorAir offers today
off
6% off the Galaxy 60
Show codeoff
6% off the Sentinel HD55 (blue, WiFi)
Show codeHow to choose a crawl space or basement dehumidifier
Best crawl space and basement dehumidifiers
-20%AlorAir Sentinel HD35P (70 PPD, with pump)
A very compact dehumidifier for basements and crawl spaces up to 1,000 sq ft, with a pump and drain hose.
-15%AlorAir Sentinel HD55 Blue (113 PPD, WiFi)
A compact, commercial-grade unit that removes up to 113 pints a day (53 at AHAM test conditions) in crawl spaces, basements and garages.
-22%AlorAir Sentinel HD55S (120 PPD)
AlorAir says the HD55S keeps crawl spaces and basements dry while saving on energy bills.
-20%AlorAir Galaxy 60 (145 PPD)
Compact but commercial-grade: up to 145 pints a day (60 at AHAM) for crawl spaces and basements up to 1,800 sq ft.
-24%AlorAir Sentinel HDi90 Ductable (198 PPD, with pump)
A smaller, ductable unit with a pump and auto-defrost that AlorAir says works down to 33.8°F.
-15%AlorAir Sentinel WHD 120 Whole House Dehumidifier
A whole-house unit that removes up to 104 pints a day at AHAM conditions (85 at DOE whole-house conditions) for spaces up to 3,000 sq ft.
AlorAir dehumidifier reviews: what customers say
What verified buyers say on AlorAir's website: the overall rating, real reviews (good and bad) and a summary.
AlorAir Sentinel HD35P
★★★★★ “Works Great! Easy to set up and use!”Peter S., verified buyer, 2025
★★★★★ “It's small and seems very solid and well made. Time will tell.”Verified buyer, 2025
AlorAir Sentinel HD55 Blue
★★★★★ “I set it at 50% humidity for my unfinished basement and so far it's working perfectly. Would recommend.”Dennis W., verified buyer, 2025
AlorAir Galaxy 60
★★★★★ “First of all, it is portable - the handles are large and easy to grasp. It is also very quiet compared to previous brands we have owned.”Michael, verified buyer, 2025
★★★★☆ “…the little white plastic feet kind of fell off immediately… and the door that holds the hepa filter kind of doesn't shut tight”Kevin R., verified buyer, 2025
AlorAir Sentinel HDi90
★★★★★ “Installed the unit, closed up all my vents, and set it to 50%. Returned 3 days later, all the puddles were gone.”music lover, 2024
★★★★☆ “…the hanging kit we purchased shorted us half of the kit to hang it in our crawlspace”Verified buyer, 2026
- Buyers say they're easy to set up and dry damp spaces quickly
- The Galaxy 60 is called quiet and easy to move
- Helpful customer service, per several reviews
- One Galaxy 60 had loose plastic feet and a filter door that didn't shut tight
- One buyer's hanging kit arrived incomplete
- Many reviews are only weeks old
Ratings and quotes from customer reviews on AlorAir's website, read October 13, 2026. Long quotes are shortened (…) without changing their meaning. We haven't tested these products ourselves.
Ways to pay less at AlorAir
FAQ
What size dehumidifier do I need for a crawl space?
Match the area: AlorAir rates the HD35P for up to 1,000 sq ft, the HD55S for 1,300 sq ft and the Galaxy 60 for 1,800 sq ft.
Does a crawl space dehumidifier need a pump?
Only if water can't drain downhill to a drain. Models like the HD35P and HDi90 have a built-in pump.
What humidity should a crawl space be?
Many buyers set their unit to about 50% and let it run; the right level depends on your home and climate.
Are AlorAir dehumidifiers good? What do reviews say?
On AlorAir's website the picks here average 4.7 to 5 stars (HD35P 4.81 from 37 reviews, Galaxy 60 4.88 from 24). Buyers praise how quickly they dry spaces; a few report small build issues.
Is there an AlorAir coupon code?
Yes, model codes: 6% off the Galaxy 60 and HD55, 5% off the HDi90 and 10% off the HDi65S. Tap Show code in the offers box.
Specs and sale prices from AlorAir's crawl space store, checked October 13, 2026. Codes from AlorAir through our affiliate network and our AlorAir store page.
