Moiswell Defender M145 Commercial Dehumidifier 155 Pint
- 155 pints/day max, 70 pints/day at AHAM
- 265 CFM airflow
- Up to 6,000 sq ft
- 22.5 x 14 x 14.7 inches, horizontal for joists
- Gravity drain, drain hose included
- 860 watts, Energy Star certified
- 24-hour timer, auto defrost, auto restart
- 5-year warranty: 2 years whole unit, 3 years parts
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A low, horizontal crawl space dehumidifier with gravity drainage and high airflow for large damp areas. It has no pump, so the drain must run downhill.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B0BW45YBQQModel: Defender M145Category: Dehumidifiers
Sizes Available
Need a different one? Pick on Amazon →
Overview
Homeowners with a damp crawl space or tight basement get a Moiswell unit shaped to sit between floor joists, on the floor or hung overhead. Set a humidity level and it cycles on and off, draining by gravity through the included hose.
A horizontal body that fits joist bays and continuous gravity draining suit unattended crawl spaces. Without a pump, the drain outlet has to be lower than the unit.
Who it's for
Crawl spaces, tight basements and water damage drying jobs suit it. Sites without a lower drain point need the pump version.
Pros and cons
- Fits between floor joists
- Floor or overhead installation
- Continuous gravity drainage
- Auto restart after outages
- No built-in pump
- Capacity figures vary in listing
- Heavy for overhead mounting
Performance notes
Moisture removal depends on airflow across a cold coil and the air's humidity and temperature, which is why the saturation and AHAM figures differ so much. Auto defrost clears ice in cool crawl spaces so output does not stall.
Specifications
| Brand | Moiswell |
|---|---|
| Model | Defender M145 |
| Dimensions & fit | |
| Item dimensions | 22.5 x 14 x 14.7 inches |
| Item weight | 63 pounds |
| Capacity & performance | |
| Dehumidification Capacity | 49.83 pints_per_day (spec sheet) |
| Capacity | 155 pints/day max, 70 pints/day AHAM |
| Upper Temperature Rating | 95 F |
| Air Flow Capacity | 265 CFM |
| Wattage | 860 watts |
| Construction & materials | |
| Material | Alloy steel |
| Included components | |
| Included Components | Drain hose, user manual |
| Warranty & support | |
| Warranty Description | 5 years: 2 years whole dehumidifier, 3 years parts |
| Other details | |
| Floor Area | 6000 square feet |
| Other Special Features Of The Product | Adjustable humidity, gravity drain, auto defrost, auto shutoff, continuous draining |
Frequently asked questions
How do I install the Moiswell Defender M145 in a crawl space?
It can sit on the floor or be installed overhead between joists. Run the included drain hose downhill, since it drains by gravity.
How much water does the Moiswell Defender M145 remove?
Up to 155 pints/day at maximum and 70 pints/day at AHAM conditions. The spec sheet also lists 49.83 pints per day.
Does the Moiswell Defender M145 have a pump?
No pump is listed. It uses gravity drainage through the hose.