Dehumidifier prices range from $150 to $700 for most homes, depending on the size of the space and how much moisture the unit removes per day

A small portable dehumidifier for a single room or closet costs $150 to $300. A mid-size unit that handles a bedroom or basement runs $300 to $500. Large whole-house or commercial dehumidifiers cost $500 to $700 or more. The price difference reflects the amount of water the unit can pull from the air each day—measured in pints per 24 hours—and how long it runs before the tank fills up.

The size of the space you need to dry matters more than the room's square footage alone. A damp bedroom needs less capacity than a wet basement with standing water or a crawlspace with constant moisture seeping in. Buying a unit too small for your space wastes money because it will run constantly and still leave the air humid. Buying one too large costs more upfront but finishes the job faster and uses less energy over time.

Key Takeaways

  • Small portable dehumidifiers cost $150 to $300 and work for single rooms or closets with mild dampness.
  • Mid-size units run $300 to $500 and handle bedrooms, bathrooms, or small basements with moderate moisture problems.
  • Large dehumidifiers cost $500 to $700 and are necessary for wet basements, crawlspaces, or whole-house humidity control.
  • The capacity you need—measured in pints of water removed per day—determines the price more than the brand name does.
  • Energy costs add $20 to $80 per month depending on how often the unit runs, so undersizing saves money upfront but costs more to operate.

Small portable units: $150 to $300

A small dehumidifier pulls 20 to 30 pints of water from the air per day and works best in a single room up to about 500 square feet. These units are lightweight, have a small water tank (usually 1.5 to 2 gallons), and need to be emptied by hand every 8 to 12 hours if the air is very damp. They cost less because they use less electricity and take up less space.

Buy this size if you have a small bedroom with occasional condensation on windows, a closet that smells musty, or a bathroom that stays humid after showers. These units are also portable—you can move one from room to room if you only need to dry one space at a time. The downside is that the small tank fills quickly in very wet conditions, and you will need to empty it frequently or attach a drain hose to a floor drain or window.

Mid-size units: $300 to $500

A mid-size dehumidifier removes 30 to 50 pints of water per day and handles spaces up to 1,500 square feet—typically a bedroom, bathroom, or small basement. The water tank is larger (2 to 5 gallons), so you empty it less often. Many mid-size models have a pump built in, which means the unit can push water uphill to a drain or window without you having to empty the tank by hand.

This is the most common size for homes with a damp basement, a finished room below grade, or a whole-floor humidity problem. The pump feature adds $50 to $100 to the price but saves hours of manual emptying over a season. If you have a floor drain or a window near the unit, a pump-equipped dehumidifier will run unattended for days.

Large units: $500 to $700

A large dehumidifier removes 50 to 100 pints of water per day and is designed for wet basements, crawlspaces, or whole-house humidity control. These units are heavier, louder, and draw more electricity than smaller models. Most come with a built-in pump and a hose connection, so they can drain continuously without intervention. Some models are designed to sit on the floor and blend into a basement or utility room; others mount on a wall.

Buy this size if your basement has standing water, seepage after rain, or a musty smell that a smaller unit cannot control. A large unit will also dry a finished basement faster and keep the humidity low enough to prevent mold growth on stored items or drywall. The higher cost is offset by the fact that you will not need to replace the unit in a few years when a smaller one burns out from running too hard.

Brand and features that affect price

Within each size category, prices vary based on the brand, the type of controls, and extra features. A basic model with a straightforward on/off switch and a manual tank costs less than one with a digital display, a humidity sensor, and automatic shutoff when the tank is full. Some units have a "continuous drain" mode that lets water flow out without stopping the machine, which is useful if you have a floor drain nearby.

Well-known brands like Frigidaire, hOmeLabs, and Ivation tend to cost $30 to $100 more than generic models with the same capacity, but they often come with longer warranties and easier customer service if something breaks. A warranty of three to five years is standard; some brands offer longer coverage for an extra fee. If you plan to use the dehumidifier for many years, a brand with good reviews and a longer warranty may save money in the long run.

Energy costs and operating expenses

A small dehumidifier uses about 300 to 400 watts of electricity and costs roughly $20 to $30 per month to run continuously. A mid-size unit uses 500 to 700 watts and costs $30 to $50 per month. A large unit uses 700 to 1,000 watts and costs $50 to $80 per month. These estimates assume electricity costs about $0.12 per kilowatt-hour, which varies by region and season.

The unit will not run all the time—it cycles on and off as the humidity rises and falls. In a very damp basement, it may run 16 to 20 hours per day. In a moderately damp room, it may run 8 to 12 hours per day. Over a full year, the operating cost is usually $200 to $500 for a small or mid-size unit, and $400 to $800 for a large one. This is why buying the right size matters: an undersized unit that runs constantly costs more to operate than a properly sized one that cycles normally.

Where to buy and what to expect

Dehumidifiers are sold at home improvement stores (Home Depot, Lowe's), online retailers (Amazon, Walmart), and appliance shops. Prices are usually the same across retailers, but shipping costs vary. A small portable unit may ship free; a large unit may cost $50 to $100 for delivery because of its weight. Some stores offer in-store pickup, which saves shipping time and money.

Check the return policy before you buy. Most retailers allow returns within 30 days if the unit does not work or is the wrong size for your space. Some stores charge a restocking fee of 10 to 15 percent if you return an opened box. If you are unsure about the size you need, buy from a retailer with a generous return window so you can test the unit in your home and exchange it if necessary.

Frequently Asked Questions

Is a dehumidifier with a pump worth the extra cost?

Yes, if you have a floor drain or a window where you can run a hose. A pump adds $50 to $100 but saves you from emptying a tank by hand every 8 to 12 hours. Without a pump, you will spend hours each week carrying heavy buckets of water, and you risk spilling on floors or furniture. A pump pays for itself in convenience within the first month.

Can I use a cheap dehumidifier from a discount store?

Cheap models work, but they often fail within one to two years because the compressor burns out from running too hard. If you buy a $150 unit and it lasts two years, you pay $75 per year. If you buy a $400 unit and it lasts five years, you pay $80 per year. The better-made unit is usually cheaper over time, and it will dry your space more reliably while it works.

What size dehumidifier do I need for a 1,000 square foot basement?

It depends on how wet the basement is. If it is just slightly damp with occasional condensation, a 30 to 40 pint unit ($300 to $400) may be enough. If it has seepage after rain or a persistent musty smell, you need a 50 to 70 pint unit ($400 to $600). If water pools on the floor or the walls are wet, you need a 70 to 100 pint unit ($600 to $800) or a professional-grade system.

Do I need to buy a new dehumidifier every year?

No. A properly sized dehumidifier lasts three to five years with normal use, and some last longer. If you buy one that is too small and it runs constantly, it may fail in one to two years. If you buy the right size and maintain it—cleaning the filter and coils—it will work reliably for years. Replacing a unit every year is a sign you bought the wrong size or a low-quality model.

Can I return a dehumidifier if it does not work?

Yes, most retailers accept returns within 30 days of purchase if the unit is unopened or if you return it in original condition with the receipt. Some charge a restocking fee of 10 to 15 percent. If the unit breaks within the warranty period (usually one to three years), the manufacturer will repair or replace it at no cost. Check the warranty details before you buy so you know what is covered.