AlorAir Helios MP55 vs Argendon Sandidry 55C
Specs, prices, editor verdict, and who should buy which - compared side-by-side.
AlorAir Helios MP55 (mid, $699.66) vs Argendon Sandidry 55C (mid, $598) - different tools for different jobs (see the per-product details below).
Compared on 6 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 Helios MP55 | Argendon Sandidry 55C |
|---|---|---|
| price | $699.66 | $598 |
| type | Crawl space / basement dehumidifier | Crawl space / basement dehumidifier |
| capacity | 120 pints/day (PPD) | 55 PPD at AHAM (120 pints/day at saturation) |
| coverage | Up to 1,500 sq ft | Up to 1,300 sq ft / 10,500 cu ft |
| drainage | Built-in pump + drain hose (continuous) | 6.5 ft gravity hose + built-in condensate pump (19.6 ft lift) |
| certification | ENERGY STAR Most Efficient, ETL | ETL safety listed |
| warranty | 5 years | 5-year limited |
AlorAir Helios MP55 also publishes: shipping
Argendon Sandidry 55C also publishes: airflow, efficiency, sound, operatingRange, filter, dimensions
Who should buy which
Homeowners in humid climates, or anyone with a damp basement or crawl space, who wants to control humidity and mold at the source as part of a clean-air home. The built-in pump suits set-and-forget continuous drainage.
You only need to clean particulates from room air (get an air purifier instead), your space is already dry, or you want a small portable bedroom dehumidifier rather than a whole-crawl-space unit.
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.
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Frequently asked
Which is better, the AlorAir Helios MP55 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 Helios MP55: $699.66. Argendon Sandidry 55C: $598. Prices are verified against the manufacturer; check the live links for current pricing.
Who should buy which one?
AlorAir Helios MP55: Homeowners in humid climates, or anyone with a damp basement or crawl space, who wants to control humidity and mold at the source as part of a clean-air home. The built-in pump suits set-and-forget continuous drainage. 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.