Dehumidifier comparison
50 Pint vs 70 Pint Dehumidifier: Which Size Do You Need?
By the WhatSize editorial team 5 min read Standards-reviewed
When choosing a dehumidifier, the decision between a 50-pint and 70-pint unit is one of the most common. The difference goes beyond just the capacity number — it affects energy use, noise level, physical size, and cost. This guide breaks down exactly when each size makes sense.
Under the 2019 DOE standard, a 50-pint dehumidifier removes 50 pints of moisture per day at 65°F/60% RH. A 70-pint unit removes 70 pints under the same conditions. But the real-world difference depends on your space, dampness level, and climate.
50 Pint vs 70 Pint: Side-by-Side
| Factor | 50 Pint | 70 Pint |
|---|---|---|
| Coverage (sq ft) | 1,000 - 2,000 | 1,500 - 3,000+ |
| Energy use | 300-500W | 500-750W |
| Noise level | 48-53 dB | 55-60 dB |
| Typical price | $150-$250 | $200-$350 |
| Tank size | 10-15 pints | 14-20 pints |
| Weight | 30-40 lbs | 40-55 lbs |
| Best for basements | Up to 1,500 sq ft | 1,500-3,000+ sq ft |
When to choose 50 Pint
- Your space is 1,000-2,000 sq ft with moderate dampness
- You have standard 8 ft ceilings
- Noise level is a concern — 50-pint units are 5-7 dB quieter
- You want to save $50-100 upfront and reduce monthly electricity
- Your basement is finished or partially finished with good drainage
When to choose 70 Pint
- Your space is over 1,500 sq ft or very damp
- You have high ceilings (10 ft+) or an open floor plan
- You need faster moisture removal after flooding or heavy rain
- Your basement is unfinished, damp, or has standing water issues
- You live in a humid climate (Florida, Gulf Coast, Pacific Northwest)
Frequently asked questions
How much more electricity does a 70-pint use vs 50-pint?
A 70-pint dehumidifier typically uses 200-250 more watts than a 50-pint when running. At $0.14/kWh and running 12 hours per day, that's about $10-15 more per month.
Is a 70-pint dehumidifier too big for a small basement?
It can be. A 70-pint unit in a small space (under 500 sq ft) will short-cycle — running for very short periods and shutting off frequently. This is inefficient and can wear out the compressor faster. Stick with 50 pints for spaces under 1,500 sq ft.
Can I replace a 70-pint dehumidifier with two 35-pint units?
Not recommended. Two separate units cost more to run, are harder to maintain, and don't coordinate with each other. One properly sized unit is always better.