AlorAir Sentinel HDi100 Whole-House Dehumidifier vs Argendon Sandidry 55C
Specs, prices, editor verdict, and who should buy which - compared side-by-side.
AlorAir Sentinel HDi100 Whole-House Dehumidifier (premium, $1,050) vs Argendon Sandidry 55C (mid, $598) - different tools for different jobs (see the per-product details below).
Compared on 8 shared specs · same category (environment).
These are close picks. Both score in the same range. The right call depends on buyer profile - read the per-buyer recommendations below.
Side-by-side specs
| Spec | AlorAir Sentinel HDi100 Whole-House Dehumidifier | Argendon Sandidry 55C |
|---|---|---|
| price | $1,050 | $598 |
| type | Whole-house / crawl-space dehumidifier (with condensate pump) | Crawl space / basement dehumidifier |
| capacity | 100 PPD at AHAM, up to 220 pints/day at saturation | 55 PPD at AHAM (120 pints/day at saturation) |
| coverage | Up to 2,900 sq ft | Up to 1,300 sq ft / 10,500 cu ft |
| certification | cETL listed | ETL safety listed |
| drainage | Integrated condensate pump, continuous drainage | 6.5 ft gravity hose + built-in condensate pump (19.6 ft lift) |
| efficiency | 2.7 L/kWh (microchannel condenser, auto defrost + restart) | 2.3 L/kWh COP, R32 refrigerant, auto defrost + auto restart |
| dimensions | 23.8 x 14.7 x 17.9 in; 88 lb; 60 dBA; 33.8 to 104 F | 17.64 x 11.69 x 11.85 in; 44.53 lb |
| warranty | 6-year limited (first 2 years full coverage) | 5-year limited |
Argendon Sandidry 55C also publishes: airflow, sound, operatingRange, filter
Who should buy which
Homeowners protecting a large basement, crawl space, or whole-house envelope from moisture, mold, and wood rot who want set-and-forget operation with a built-in pump.
You only need to dry a single room or small crawl space (the lower-cost HDi65 or Helios units are a better fit), or you want true HEPA or carbon air purification rather than moisture control.
Homeowners with a mid-size damp crawl space or basement (1,000 to 1,300 sq ft) who want set-and-forget continuous drainage via the built-in 19.6-ft-lift pump, at about $100 under the comparable AlorAir unit.
Your space is under 1,000 sq ft (the Shield 35P costs $200+ less), you want an ENERGY STAR-listed unit (the AlorAir Helios MP55 carries that mark, this SKU lists ETL only), or you need whole-house ducted coverage.
Go deeper
Frequently asked
Which is better, the AlorAir Sentinel HDi100 Whole-House Dehumidifier or the Argendon Sandidry 55C?
They are closely matched on our scoring, so the right pick comes down to your priorities. The verdict and spec table above compare them on price, features, and who each one suits.
How much do they cost?
AlorAir Sentinel HDi100 Whole-House Dehumidifier: $1,050. Argendon Sandidry 55C: $598. Prices are verified against the manufacturer; check the live links for current pricing.
Who should buy which one?
AlorAir Sentinel HDi100 Whole-House Dehumidifier: Homeowners protecting a large basement, crawl space, or whole-house envelope from moisture, mold, and wood rot who want set-and-forget operation with a built-in pump. Argendon Sandidry 55C: Homeowners with a mid-size damp crawl space or basement (1,000 to 1,300 sq ft) who want set-and-forget continuous drainage via the built-in 19.6-ft-lift pump, at about $100 under the comparable AlorAir unit.
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