6 Best AlorAir Dehumidifiers for Crawl Spaces (October 2026)
The best AlorAir crawl space dehumidifiers include the ALORAIR 113 Pints Crawlspace Dehumidifier for Commercial for automatic drainage, the ALORAIR 120 Pints Energy Star Crawlspace Dehumidifier for Energy Star certification, and the ALORAIR 70 PPD Dehumidifier with Pump for upward drainage.
On this page (8 sections)
- How we chose AlorAir crawl space dehumidifiers
- Compare the AlorAir crawl space picks
- Best AlorAir dehumidifiers for crawl spaces
- How should you choose capacity for a crawl space?
- Which drainage method fits a crawl space?
- How much clearance and access do you need?
- What should you check before installing an AlorAir unit?
- Which AlorAir crawl space dehumidifier should you choose?
The ALORAIR 113 Pints Crawlspace Dehumidifier for Commercial is the top pick for most crawl spaces, with automatic drainage and auto defrost. Choose the ALORAIR 70 PPD Dehumidifier with Pump when water must travel upward, or the ALORAIR 235 Pints Dehumidifier with Pump for higher stated capacity.
A crawl space can have low headroom, a small access hatch and few convenient drain points. Measure those limits first, then compare the unit's height, rated capacity and drainage method.
For another brand in this category, see AprilAire crawl-space models.
For a broader look beyond AlorAir, see our Best Dehumidifier For Crawl Space guide. If you are still deciding whether equipment is needed, read Do I Need a Crawl Space Dehumidifier?.
Our picks at a glance
-
1
Best for automatic drainageALORAIR 113 Pints Crawlspace Dehumidifier for Commercial
9.7/10 our score
See it on Amazon -
2
Best for Energy Star certificationALORAIR 120 Pints Energy Star Crawlspace Dehumidifier,
9.4/10 our score
See it on Amazon -
3
- 4
Check itALORAIR Dehumidifier Riser Kit 4-Pack
Best for raising a dehumidifier - 5
Check itALORAIR 235 Pints Dehumidifier with Pump
Best for higher AHAM capacity - 6
Check itALORAIR 120 Pints Commercial Dehumidifier with Drain
Best for gravity drainage
How we chose AlorAir crawl space dehumidifiers
We compared stated capacity, dimensions, drainage method and access features to find options for different crawl space layouts. Our score weighs specs, features and buyer feedback against what you're shopping for.
Capacity figures use different conditions, so compare like with like. AHAM is the useful common reference here, while saturation figures describe a different test condition.
We also considered how water leaves the space. A gravity drain needs a lower outlet and a suitable downward route, while a built-in pump can lift water when gravity alone cannot.
Compare the AlorAir crawl space picks
The Sentinel HD55 and HD55S share dimensions and similar AHAM capacity, while the HD35P has a shorter body and built-in pump. The Uni-P Dry Pro 120X has the highest stated AHAM capacity here and a larger body.
| Product | Best for | Capacity | Size | Drainage | Our score |
|---|---|---|---|---|---|
| ALORAIR 113 Pints Crawlspace Dehumidifier for Commercial | automatic drainage | 53 pints per day at AHAM; 113 pints at saturation | 19.2 x 12.2 x 13.3 in | Automatic drainage; no internal tank | 9.7 |
| ALORAIR 120 Pints Energy Star Crawlspace Dehumidifier, | Energy Star certification | 55 pints per day at AHAM; 120 pints at saturation | 19.2 x 12.2 x 13.3 in | Automatic drainage through built-in drain outlet | 9.4 |
| ALORAIR 70 PPD Dehumidifier with Pump | upward drainage | 35 pints per day at AHAM; 70 pints at saturation | 15.2 x 11.2 x 11.4 in | Built-in pump; lifts water up to 19.6 ft | 9.2 |
| ALORAIR Dehumidifier Riser Kit 4-Pack | raising a dehumidifier | 8.7 | |||
| ALORAIR 235 Pints Dehumidifier with Pump | higher AHAM capacity | 120 pints per day at AHAM; 235 pints at saturation | 23.82 x 13.89 x 15.94 in | Built-in pump; lifts water up to 14.7 ft | 8.4 |
| ALORAIR 120 Pints Commercial Dehumidifier with Drain | gravity drainage | 55 pints per day at AHAM; 120 pints at saturation | 19.2 x 12.2 x 13.3 in | Gravity drainage | 8.2 |
Best AlorAir dehumidifiers for crawl spaces
The right AlorAir crawl space dehumidifier depends on your space's tightest constraint: clearance, drainage or access. If you are choosing for a basement, see GE dehumidifiers for basements.
These picks are ordered by score, from highest to lowest, and each matches a different installation need.
ALORAIR 113 Pints Crawlspace Dehumidifier for Commercial: Best for automatic drainage
- 53 pints per day at AHAM
- Up to 1,200 sq ft
- 19.2 x 12.2 x 13.3 in
- Automatic drainage
- Auto defrost
Its compact body and automatic drainage suit crawl spaces where emptying a tank would be awkward. It removes 53 pints per day at AHAM.
Pros
- Automatic drainage
- Auto defrost
- Metal outer casing
Cons
- Needs a suitable drain route
- Remote control is optional
The ALORAIR 113 Pints Crawlspace Dehumidifier for Commercial is the top pick for a crawl space with a suitable drain route. Its 19.2 x 12.2 x 13.3 in metal body is compact for this group, and it drains automatically without an internal tank.
It removes 53 pints per day at AHAM and 113 pints at saturation, with coverage stated up to 1,200 sq ft. Those figures use different conditions, so compare the AHAM rating with another model's AHAM rating.
Automatic defrost pauses the compressor while the fan runs to thaw frost. Its MERV-1 filter helps protect internal parts from dust.
Check that the drain outlet can sit below the unit and that the hose can run downhill. If the route needs water to rise, compare it with the Best Pump Dehumidifier For Crawl Space options.
ALORAIR 120 Pints Energy Star Crawlspace Dehumidifier,: Best for Energy Star certification
- 55 pints per day at AHAM
- Up to 1,300 sq ft
- Energy Star certified
- Automatic drainage
- Auto defrost
The Sentinel HD55S has the same dimensions as the HD55 and adds Energy Star certification. Its built-in drain outlet allows automatic drainage.
Pros
- Energy Star certified
- Automatic drainage
- Auto defrost
Cons
- Needs a suitable drain route
- Remote monitoring is optional
The ALORAIR 120 Pints Energy Star Crawlspace Dehumidifier, suits buyers who want Energy Star certification and a compact crawl space footprint. Its stated dimensions match the HD55, and it removes 55 pints per day at AHAM.
It drains collected moisture through a built-in drain outlet. The MERV-1 filter helps protect internal parts from dust, and auto defrost supports operation when frost begins to form.
The unit is rated for spaces up to 1,300 sq ft. Treat that as a guide, and consider moisture sources, insulation and air leaks in your crawl space.
This model suits a lower drain route and needs to remain accessible for maintenance. If limited headroom is your main concern, compare the best small crawl space dehumidifier choices.
ALORAIR 70 PPD Dehumidifier with Pump: Best for upward drainage
- 35 pints per day at AHAM
- Built-in condensate pump
- 19.6 ft hose
- Pump lifts water up to 19.6 ft
- 15.2 x 11.2 x 11.4 in
Its shorter body and built-in pump suit spaces where a drain route needs upward lift. It removes 35 pints per day at AHAM.
Pros
- Built-in pump
- Short body
- Auto defrost
Cons
- Lower AHAM capacity than the larger models
- Drain route still needs planning
The ALORAIR 70 PPD Dehumidifier with Pump suits a difficult drain route. It includes a condensate pump and a 19.6 ft hose, with a stated lift height of up to 19.6 ft.
Its body measures 15.2 x 11.2 x 11.4 in, making it shorter than the Sentinel HD55 models here. Its capacity is 35 pints per day at AHAM and 70 pints at saturation, for spaces up to 1,000 sq ft.
Auto defrost and auto restart are included. ALORAIR describes operation below 50 dB, though the sound you hear will depend on placement and the surrounding structure.
Check the full route from the unit to the discharge point, including lift height and hose length. A pump can help when the outlet is higher, but the hose still needs to remain clear and accessible.
ALORAIR Dehumidifier Riser Kit 4-Pack: Best for raising a dehumidifier
- Four risers
- Raises unit by 6 in
- Helps allow space for drainage
- Recessed cups for feet
The four risers raise a dehumidifier by 6 in, which can create room below for a drain trap or pump setup. Measure overhead clearance before adding them.
Pros
- Raises the unit by 6 in
- Four supports included
- Recessed cups for feet
Cons
- Uses additional vertical clearance
- Does not replace a planned drain route
The ALORAIR Dehumidifier Riser Kit 4-Pack can add room below a dehumidifier for a drain trap or pump setup. It includes four supports and raises the dehumidifier by 6 in.
Each riser measures 6.4 x 6.4 x 6.2 in and has a recessed cup to position a dehumidifier foot. The raised position may help keep a drain hose from being pinched against the floor.
The extra height reduces overhead clearance. Measure from the floor to joists, pipes and ductwork, and confirm the raised unit still fits through the access opening.
This is an accessory, not a dehumidifier. Choose it after confirming that the elevation suits your drain layout and that the supports can sit on a stable surface.
ALORAIR 235 Pints Dehumidifier with Pump: Best for higher AHAM capacity
- 120 pints per day at AHAM
- 235 pints at saturation
- Built-in pump
- 19.6 ft hose
- 23.82 x 13.89 x 15.94 in
The Uni-P Dry Pro 120X has the highest stated AHAM capacity here, plus a built-in pump and four wheels. Its larger body needs room for placement and access.
Pros
- 120 pints per day at AHAM
- Built-in pump
- Four wheels
Cons
- Larger body than the other dehumidifiers here
- Needs a clear route for moving and servicing
The ALORAIR 235 Pints Dehumidifier with Pump is the higher-capacity choice for a larger crawl space or demanding moisture load. It removes 120 pints per day at AHAM and 235 pints at saturation, with stated coverage up to 3,300 sq ft.
Its built-in pump comes with a 19.6 ft hose and can lift water up to 14.7 ft. Four wheels and a sturdy handle help with positioning, but its 23.82 x 13.89 x 15.94 in dimensions need more clearance than the smaller Sentinel units.
This model has automatic restart memory and a humidity setting range of 35% to 90% RH. The higher capacity may suit a larger space, but first confirm the opening, route and service access can accommodate its body.
For help deciding whether a crawl space needs active moisture control, see Do I Need a Dehumidifier for a Crawl Space?. Fixing bulk water entry and drainage problems remains part of managing moisture.
ALORAIR 120 Pints Commercial Dehumidifier with Drain: Best for gravity drainage
- 55 pints per day at AHAM
- Up to 1,300 sq ft
- 19.2 x 12.2 x 13.3 in
- Gravity drainage
- Auto defrost
This compact Sentinel HD55 uses gravity drainage and suits a space with a lower drain. Check the outlet location and route before placement.
Pros
- Compact dimensions
- Gravity drainage
- Auto defrost
Cons
- No built-in pump
- Needs a suitable lower drain
The ALORAIR 120 Pints Commercial Dehumidifier with Drain uses gravity drainage and suits a crawl space with a lower drain nearby. It measures 19.2 x 12.2 x 13.3 in and removes 55 pints per day at AHAM or 120 pints at saturation.
Gravity drainage avoids the need for a pump, but the outlet must be lower than the unit and the hose must run downhill. Plan the path and drain location before placement.
Automatic defrost is included, and the unit is described for spaces up to 1,300 sq ft. The rubber adjustable feet are intended to reduce noise and prevent scratches.
Choose this option when a gravity route is available and the unit can be reached for care. If you cannot confirm a downward route, a pump model may better fit the layout.
How should you choose capacity for a crawl space?
Choose capacity by comparing AHAM ratings, then account for the moisture load and conditions in your crawl space. The largest saturation number alone won't tell you which unit fits.
The Sentinel HD55 and HD55S remove 53 and 55 pints per day at AHAM, respectively. The HD35P removes 35 pints, and the Uni-P Dry Pro 120X removes 120 pints per day at AHAM.
Start by finding and correcting bulk water sources, such as leaks or poor drainage. Then choose a unit for the remaining moisture load and the space you can access.
Which drainage method fits a crawl space?
Gravity drainage fits when condensate can run downhill to an appropriate drain or discharge point. A pump helps when water must travel upward.
Map the route before buying. Measure the height from the unit to the outlet and the hose length, then confirm where water will discharge.
For gravity drainage, use a steady downward slope and avoid kinks or low spots that can hold water. For pump drainage, keep the route within the model's stated lift and hose limits.
How much clearance and access do you need?
Measure the unit and the route to its final position, including the access hatch, turns and overhead obstructions. A model that fits under the joists may still be too large to carry through a narrow opening.
The HD35P is 11.4 in high. The HD55 models are 13.3 in high, while the Uni-P Dry Pro 120X is 15.94 in high.
Leave working room for filter care, controls and hose checks. The riser kit adds 6 in, so include that in the clearance calculation.
What should you check before installing an AlorAir unit?
Check the crawl space for standing water, leaks, drainage issues and ground moisture before installing a dehumidifier. A dehumidifier controls humidity, but does not repair leaks or stop water from entering the structure.
Confirm the power source and follow the unit's placement and drainage instructions. Keep it level and accessible, and avoid blocking airflow or placing it where service would require crawling over hazards.
If the space is hard to enter, plan how you will inspect the hose, filter and controls later. Choose an installation you can maintain without moving stored items or disturbing wiring and pipes.
Which AlorAir crawl space dehumidifier should you choose?
Choose the ALORAIR 113 Pints Crawlspace Dehumidifier for Commercial for automatic drainage, the ALORAIR 70 PPD Dehumidifier with Pump when upward drainage and shorter height matter, or the ALORAIR 235 Pints Dehumidifier with Pump when its higher AHAM capacity suits the space.
Before buying, measure the tightest opening and map the entire drain route. If water can run downhill, compare the gravity-drain models; if it must rise, compare pump lift limits and hose length.
For setup steps after choosing a model, see How to Dehumidify a Crawl Space?. Choose a unit that meets the moisture need and can be installed, drained and serviced in your crawl space.
Our top 3 picks at a glance
-
1
Best for automatic drainage
ALORAIR 113 Pints Crawlspace Dehumidifier for Commercial
9.7/10 our score
See it on Amazon -
2
Best for Energy Star certification
ALORAIR 120 Pints Energy Star Crawlspace Dehumidifier,
9.4/10 our score
See it on Amazon -
3
Frequently asked questions
Which AlorAir dehumidifier is best for a crawl space?
The ALORAIR 113 Pints Crawlspace Dehumidifier for Commercial is a practical starting point for many crawl spaces, with a 19.2 x 12.2 x 13.3 in body, automatic drainage and auto defrost. Choose a pump model if water must travel upward, and compare AHAM capacity with the moisture load you need to manage.
What should I measure before buying an AlorAir crawl space dehumidifier?
Measure the crawl space height, access opening, route to the final position, and room around the controls and filter. Map the drain route too, including the height water must travel if you plan to use a pump.
Leave room to remove and service the unit.
Do AlorAir crawl space dehumidifiers need a pump?
A pump helps when the outlet is higher than the dehumidifier or the drain route needs upward lift. The ALORAIR 70 PPD Dehumidifier with Pump has a built-in pump that can lift water up to 19.6 ft.
A gravity-drain model can work when the outlet is lower and the hose can run downhill.
Is a riser kit useful under a crawl space dehumidifier?
A riser kit can add room below a unit for a drain trap or pump setup. The ALORAIR Dehumidifier Riser Kit 4-Pack raises a dehumidifier by 6 in, so check overhead clearance before using it.
You still need a drain route that suits the unit.
How do I choose between AlorAir capacity ratings?
Compare AHAM capacities with each other, and treat saturation capacity as a separate rating. The ALORAIR 113 Pints Crawlspace Dehumidifier for Commercial is rated at 53 pints per day at AHAM and 113 pints at saturation.
Then consider the space, drainage, clearance and access.
