Moiswell M145 Review: A High-Capacity Unit That Hangs Between Joists
Moiswell's M145 is an ENERGY STAR crawl space unit with 265 CFM airflow that installs on the floor or overhead.
By Daniel Brooks
Updated October 28, 2026
The Moiswell M145 Dehumidifier is an ENERGY STAR crawl space dehumidifier that removes up to 155 pints a day at maximum and 70 pints a day at AHAM, and installs on the floor or overhead between joists. For more models, see our Whole-House & Crawl Space Dehumidifiers page.
Our Verdict
For larger crawl spaces where floor space is scarce or wet, the M145’s overhead mounting and high airflow are big advantages.
At 63 pounds, overhead mounting needs solid hardware, and this version has no pump.
Moiswell M145 Dehumidifier
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | Moiswell |
| Model | M145 |
| Capacity | 155 pints max, 70 pints at AHAM |
| Airflow | 265 CFM |
| Certification | ENERGY STAR |
| Installation | Floor or overhead |
| Drainage | Drain hose |
| Size and Weight | 22.5 x 14 x 14.7 inches, 63 pounds |
Design
The horizontal body measures 22.5 x 14 x 14.7 inches, made to fit between floor joists.
A drain hose handles continuous drainage.
Controls
Set the target humidity and it runs automatically, with auto defrost and memory start.
Airflow is 265 CFM, strong for drying very damp spaces quickly.
Placement Tips
In a crawl space, set the unit level on a vapor barrier, blocks or a hanger kit, away from standing water, with clear space around the intake and outlet. Run the drain hose with a steady downhill slope, or route the pump line to a sink, sump or exterior opening.
Seal vents and lay a vapor barrier first. A dehumidifier in a vented crawl space spends its effort drying outdoor air.
Running Costs and Care
Check the filter every month or two during heavy use and rinse or replace it when dirty. Make sure the drain line stays clear and, on pump models, test the pump occasionally.
Set the humidity target around 50% to 55%. The compressor then cycles off once the space is dry, which keeps running costs down.
How It Compares
Against the ALORAIR Galaxy 60, the Moiswell adds overhead mounting and ENERGY STAR.
Against the Moiswell HP110, the M145 has more capacity but no pump.
Pros and Cons
| Pros | Cons |
|---|---|
| 70 pints at AHAM | No pump |
| 265 CFM airflow | Heavy for overhead mounting |
| ENERGY STAR | Generous coverage claim |
| Overhead mounting | Lesser-known brand |
| Memory start | No Wi-Fi |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Large crawl spaces | Spaces with no drain |
| Wet floors | Small crawl spaces |
| Joist mounting | DIY installs without help |
| Basements with a drain | Anyone wanting app control |
For more options, see our picks for the best large crawl space dehumidifiers and the best crawl space dehumidifiers under 500.
Final Verdict
The Moiswell M145 Dehumidifier is a high-capacity crawl space unit that can hang out of the way. You can check the current price and details for the Moiswell M145 Dehumidifier.
Frequently Asked Questions
What is its AHAM rating?
70 pints a day.
Can it hang from joists?
Yes, it supports overhead installation.
Is it ENERGY STAR?
Yes.
Does it have a pump?
No, it drains by gravity.
How heavy is it?
63 pounds.
About the author
Daniel Brooks is a home cooling editor at WikiCooling, covering window, portable, through-the-wall and mini-split air conditioners, fans, and dehumidifiers. He researches cooling capacity, energy efficiency, noise levels, installation requirements, and buyer feedback to help homeowners choose the right unit for their room size, climate, and budget.