Skip to content
Independent·Affiliate-disclosed·Spec-verified·Updated June 26, 2026
Home / Compare
Head-to-head buyer guide

AlorAir Helios MP55 vs Argendon Shield 35P

Specs, prices, editor verdict, and who should buy which - compared side-by-side.

By Ryan · Founder
Published May 3, 2026
Quick verdict

AlorAir Helios MP55 (mid, $699.66) vs Argendon Shield 35P (mid, $373–$396) - different tools for different jobs (see the per-product details below).

Compared on 6 shared specs · same category (environment).

AlorAir Helios MP55 crawl space dehumidifier
AlorAir

Helios MP55

Indoor air quality is a longevity input most people ignore, and humidity is the lever underneath it. The AlorAir Helios MP55 is the crawl-space and basement dehumidifier that keeps a home dry enough to stop mold and dust mites before they reach the air you breathe.

PRICE
$699.66
View at AlorAir
Argendon Shield 35P crawl space dehumidifier
Argendon

Shield 35P

Indoor humidity is the upstream lever for indoor air quality, and damp crawl spaces feed mold and dust mites into the air you breathe. The Argendon Shield 35P is the compact, pump-equipped unit that keeps a small crawl space or basement dry.

PRICE
$373–$396
View at Argendon
The verdict

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

SpecAlorAir Helios MP55Argendon Shield 35P
price$699.66$373–$396
typeCrawl space / basement dehumidifierCrawl space / basement dehumidifier
capacity120 pints/day (PPD)70 pints/day saturation (35 pints/day AHAM)
coverageUp to 1,500 sq ftUp to 1,000 sq ft
drainageBuilt-in pump + drain hose (continuous)6.5 ft gravity hose + built-in pump (19.6 ft lift)
certificationENERGY STAR Most Efficient, ETLETL safety listed
warranty5 years5-year limited

AlorAir Helios MP55 also publishes: shipping

Argendon Shield 35P also publishes: defrost, refrigerant, dimensions

Who should buy which

Pick the AlorAir Helios MP55 if

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.

Skip if

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.

Pick the Argendon Shield 35P if

Homeowners with a small damp crawl space or basement (up to ~1,000 sq ft) who want set-and-forget continuous drainage via a built-in pump at a compact size and lower price.

Skip if

Your space is larger or wetter (step up to the AlorAir Helios MP55), or you only need to filter room-air particulates (an air purifier addresses that instead).

Go deeper

FULL REVIEW
Read the AlorAir Helios MP55 review →
FULL REVIEW
Read the Argendon Shield 35P review →