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AlorAir Sentinel HDi100 Whole-House Dehumidifier vs Argendon Shield 35P

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

By Ryan · Founder
Updated Sep 30, 2026

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Quick verdict

AlorAir Sentinel HDi100 Whole-House Dehumidifier (premium, $1,050) vs Argendon Shield 35P (mid, $372.89). Different tools for different jobs (see the per-product details below).

Compared on 7 shared specs · same category (environment).

AlorAir Sentinel HDi100 whole-house and crawl-space dehumidifier
AlorAir

Sentinel HDi100 Whole-House Dehumidifier

A pumped, cETL-certified 100-pint dehumidifier that holds a 2,900 sq ft basement or crawl space at target humidity and then disappears into the background.

PRICE
$1,050
View at AlorAir →
Argendon Shield 35P crawl space dehumidifier
Argendon

Shield 35P

The Argendon Shield 35P is a compact crawl space and basement dehumidifier: rated at 70 pints per day at saturation (35 pints per day on the AHAM standard) for spaces up to about 1,000 sq ft, with a built-in condensate pump so it drains continuously without a tank to empty.

PRICE
$372.89
View at Argendon →
The verdict

We have not scored these two head to head, so this page does not name a winner. The Argendon Shield 35P starts at $372.89 and the AlorAir Sentinel HDi100 Whole-House Dehumidifier at $1,050. The per-buyer recommendations below say who each one suits.

Side-by-side specs

SpecAlorAir Sentinel HDi100 Whole-House DehumidifierArgendon Shield 35P
price$1,050$372.89
typeWhole-house / crawl-space dehumidifier (with condensate pump)Crawl space / basement dehumidifier
capacity100 PPD at AHAM, up to 220 pints/day at saturation70 pints/day saturation (35 pints/day AHAM)
coverageUp to 2,900 sq ftUp to 1,000 sq ft
certificationcETL listedETL safety listed
drainageIntegrated condensate pump, continuous drainage6.5 ft gravity hose + built-in pump (19.6 ft lift)
dimensions23.8 x 14.7 x 17.9 in; 88 lb; 60 dBA; 33.8 to 104 F15.2 x 11.2 x 11.4 in, ~38 lbs
warranty6-year limited (first 2 years full coverage)5-year limited

AlorAir Sentinel HDi100 Whole-House Dehumidifier also publishes: efficiency

Argendon Shield 35P also publishes: defrost, refrigerant

Who should buy which

Pick the AlorAir Sentinel HDi100 Whole-House Dehumidifier if

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.

Skip if

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.

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 Sentinel HDi100 Whole-House Dehumidifier review →
FULL REVIEW
Read the Argendon Shield 35P review →

Frequently asked

Which is better, the AlorAir Sentinel HDi100 Whole-House Dehumidifier or the Argendon Shield 35P?

We have not scored these two head to head, so this page does not name a winner. The Argendon Shield 35P starts at $372.89 and the AlorAir Sentinel HDi100 Whole-House Dehumidifier at $1,050. The per-buyer recommendations below say who each one suits.

How much do they cost?

AlorAir Sentinel HDi100 Whole-House Dehumidifier: $1,050. Argendon Shield 35P: $372.89. 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 Shield 35P: 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.

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