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How Much Is A Dehumidifier And What Does It Cost To Install?

Typical Range: $1,300 - $2,800

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It costs $1,300 to $2,800 to install a dehumidifier. Basement models average between $1,300 and $1,800, while crawl space ones are $1,500 to $2,000. Whole-house versions could be as low as $1,500 and as high as $2,800.
Homeowners install dehumidifiers to reduce the humidity within the home, which improves air quality and lowers the risk of mold. The system pulls moisture out of the air, collects it and drains it away. A lot of people opt for the portable version, which they can move from one space to another as-needed. A portable style works best in a house where humidity is only high for a brief period or a few times a year.
For homes where humidity is a high concern, it’s smart to invest in a whole-home, crawl space or basement dehumidifier. Whole-house versions connect to your HVAC system and remove moisture from the air that circulates through the ducts. Basement and crawl space units pull moisture out of these spaces to reduce mold growth, minimize the deterioration of the building structure and capture moisture before it can rise into the home.
You don’t need professional installation for a portable unit unless you need a new designated plug. However, larger, more permanent ones are complex, and you should contact an HVAC technician to put them in place. They will know the best way to situate and connect the equipment to maximize efficiency.

Dehumidifier Costs - $800-$2,500

Whole-house models are $1,000-$2,500. Those for crawl spaces and basements are $800-$1,200. Factors which affect the price of your unit include how many pints it can condense in a day, whether or not it comes with a humidistat and whether or not you need extra ductwork.

Whole House Dehumidifiers - $1,000-$2,500

These are also known as furnace or central units. Technicians attach them to the return ductwork of your HVAC system. You can also add a new, dedicated return duct to your HVAC system to accommodate the dehumidifier. Costs generally range between $1,000 and $2,000.

Permanent Basement Units - $800-$1,200

Basement humidity shouldn’t be higher than 55 percent. Permanent basement dehumidifiers help you to maintain safe moisture levels and protect the space from mold and water damage for a price between $800 and $1,200. You will need a different size unit depending on how large and damp the area is. Basements over 2,500 square feet that are very wet will need a model that pulls over 100 pints per day. 75- pint model would work for a semi-wet, 1,800 square foot basement. Higher-capacity models will cost more than the average, such as a 130-pint model, which costs $1,700-$2,000.

Under the House / Crawl Space - $800-$1,200

Choosing a dehumidifier to go under your house or in your crawl space is more limiting than choosing one for other areas. This is because these spaces can be as narrow as 18 inches and your dehumidifier needs adequate space for installation and operation. You also can’t use the lower-cost, appliance-grade units because they will not be able to keep up with the humidity levels or the colder temperatures. Models designed for these purposes typically range between $800 and $1,200 and are more durable and size-appropriate. To work with a 2,000 square foot space, consider a unit that draws up to 90 pints per day. Seventy pints per day would accommodate 1,800 square feet and 155 per day would accommodate 3,600 square feet.
Consult with a Professional When Choosing a Dehumidifier
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Popular Brands

  • Aprilaire – $1,000-$1,700 – One of the top companies for Whole House Dehumidifiers, though they also sell crawl space units. Models available from 70 pints to 130 pints and is very reliable. The products have 5-year warranties and user-friendly controls.
  • SaniDry – about $1,200 - $2,500 - Highly efficient products with large capacities. They specialize in basement and crawl space applications. They are around the same cost of Santa Fe models, though you must request a quote from your local dealer.
  • Santa Fe – $1,200-$2,500 – Specializes in basement and crawl space dehumidifiers and is one of the leading producers in the industry. They have whole house units available for purchase as well. Their options range from 70 pints per day to 155.
  • Honeywell – $1,000-$2,000 - Has a selection of whole-home products available in 65-pint, 90-pint and 120-pint capacities. They have 5-year warranties.
  • LG – $300 - Carries two models: a 55-pint and a 70-pint. These are appliance-grade, however, and may not be sufficient for whole home or under-home. Consult with a local HVAC professional before you purchase.
  • Wave – $1,500-$1,700 - Has their own version of the dehumidifier, known as a “ventilation type.” It is supposed to be more efficient and environmentally friendly. It comes with a ten-year warranty, is large-capacity and will have a lower operating cost than regular units. The effectiveness of this equipment is still being debated.

Drainage Options

Drainage is a number one issue with dehumidifiers. If you’re not interested in lugging buckets of water back and forth throughout a damp season, you have a couple of options.
  • Pump – With a pump, you don’t have to rely on gravity and can drive the water away from the unit. Some dehumidifiers come with internal condensate pumps and cost around $1,200. Otherwise, you can buy an external pump. Internal pumps can move water up to 16 feet and external ones can move it up to 20 feet.
  • Gravity – Most models will drain in this way. You attach a hose to the available water outlet and feed It into a drain or, in basements, a sump pump. When you map out where your system will go, plan to situate it near a drain option. The hose must direct the water down and away from the outlet to avoid flooding water back into it.

Installation Costs + Factors

It takes about 6 hours to install these systems and it adds $550-$650 to your total. HVAC technicians are the best option for setting these systems up. Experts can guarantee that your unit is right for the space, that it is set accurately and that it operates at optimum efficiency.
Average Dehumidifier Installation Costs
TypeLowHigh
Whole House$1,500$2,800
Crawl Space$1,500$2,000
Basement$1,300$1,800
Factors which affect your cost include:
  • Capacity of chosen unit.
  • Addition of designated outlet.
  • Addition of designated return duct.
  • Difficulty of access to installation area.

Dehumidifier Rental

You may only need a dehumidifier for a short period of time. In this case, it is more cost-effective to rent one. On average, rentals cost $40-$50 per day. The cost of your rental will depend on the size of the machine. Larger-capacity models are $60-$70 per day. Expect to need the unit for more than a couple of days. Many companies offer weekly rates, which may be better suited to your needs. These rates range from $200-$300, depending on size. There are many situations in which a rented dehumidifier would be useful.
  • Water Damage –Storms, burst pipes, leaks from the roof or appliances and even tub overflow can have significant effects on your home. The process of removing water damage will be much more involved than simply running a dehumidifier. If it’s been long-standing, you may have mold. You’ll also need to address the source of any leaks. Dehumidification is a vital part of the process, but it won’t solve the larger issue.
  • Sealing Crawl Space or Basement – When you encapsulate your crawl space or seal up your basement as part of waterproofing, it is important to dehumidify the area. Otherwise, you will be locking in moisture. Moisture in these spaces is greater than in the home and locking it in could cause mold and water damage. Waterproofing costs an average of $4,000 but, considering that the costs to repair water damage can get as high as $7,000, it may be worth the investment.
  • Carpet Repair ($120 - $260) – If your carpet floods and doesn’t dry, you should probably replace it. However, if it’s rippling, one knowable cause is high humidity. You may be able to repair it by dehumidifying the air for a period.
  • Radiant Heating ($1,700 - $5,300) – Radiant heating will affect the humidity in your home. You may need to rent a unit as you find the balance, after installation, or in seasons which prove to generate more moisture.
Hire a HVAC Professional to Install or Service Your Dehumidifier
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Repair Prices & Troubleshooting

Repair services for these systems cost $50-$200 and involve a basic fee, an hourly rate and the price of materials or parts. HVAC companies charge the basic fee of $50-$100 to cover the cost of responding to the service request. Labor is typically $50-$70 per hour.
You can fix most of the problems with your unit yourself with the guidance of your owner’s manual and a call to the manufacturer. Make this call first, so that you don’t take a chance on voiding your warranty. Beyond the issues you can troubleshoot, or if you have difficulty accessing the equipment, call a certified HVAC technician.
These are the common problems associated with dehumidifiers:
  • Dirty or Icy Coils – Blocked coils will stop your system from working or will make it work poorly. Try cleaning or de-icing them according to your manual before calling for repairs.
  • Power Problems – Tripped breakers and faulty power cords are often to blame when your unit won’t turn on.
  • Component Failure – Several components can wear out or break. If your unit overflows or leaks, it could be a broken float switch. If the system won’t start, you might need to replace your humidistat.
  • Blockage – Clogged drains and hoses are another reason for leaks and overflow.
  • Freeze-Up – Because most of these models are refrigerant style, there is a danger that they will freeze up under 60 degrees—unless they are rated for lower temperatures. If your system freezes in warmer temperatures, there are many possibilities:
    • Compressor problem
    • Faulty deicer
    • Low refrigerant
    • Blocked airflow
  • Noises – Loose screws and parts will cause vibrations.
  • Smells – There may be water stuck in the hose or your coils may be dirty.

Cleaning & Maintenance

Each dehumidifier comes with an owner’s manual that you can use to properly maintain your unit. However, there are a few things that are relatively universal to all models.
  • Check the humidistat – Make sure that your humidistat is set appropriately. If it is set to too low of a humidity level, your system will work harder than necessary and waste energy. If it is set too high, you won’t be using the unit to its full potential.
  • Change the filter – Most likely, you will need to change the filter once a year. However, it is helpful to check it mid-way through the year and clean it if necessary. Not all filters are washable, however, so check your manual for guidance.
  • Clean and check the coils – The coils get dusty and should be cleaned at least once a year. They may also get icy in temperatures under 60 degrees. Follow your manual’s instructions for de-icing.
  • Clean the reservoir – If your unit has a reservoir, be sure to stay on top of cleaning it. Mold and bacteria can get into this water and will be hazardous to your health.
  • Check the motor and pumps – In large-capacity models, you may need to lubricate the motor.
  • Monitor the water – In both models with reservoirs and those with hoses and drainage, you should keep an eye on the water. In reservoirs, don’t let your container get full or your unit will shut down. In drainage styles, check to make sure that the water isn’t blocked from draining.
Hire a Humidifier and Dehumidifier Installation Pro
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FAQs

What’s the Difference between a Dehumidifier and an AC?

Air conditioners and dehumidifiers are similar but they perform two very different functions. Dehumidifiers reduce moisture in the air and air conditioners cool the home. Dehumidifiers pull the air in and re-heat it before sending it back into the room. They can also handle excessive levels of moisture, where AC systems cannot.

How Much Electricity does a Dehumidifier Use?

This will depend on your model. The following are average watts per hour.
  • 30 pints = 300-400 watts
  • 50 pints = 400-500 watts
  • 70 pints = 600-700 watts

How Much Does It Cost to Run a Dehumidifier?

Depending on the size of your unit, you could pay $15-$25 per month. Yearly averages range from $60 to $300.

How Much Water Should It Collect Per Day?

This depends on the capacity of your model. These systems are available in a range from 30-150 pints per day.

How Much Area will a 30, 50 and 70 Pint Dehumidifier Collect?

This depends on the humidity of the space.
  • 30-pint models - up to 2,000 square feet but, if the area is exceedingly moist, may only serve up to 1,500 square feet.
  • 50-pint models – up to 2,000 square feet. In basements, they will only work at 1,500 square feet.
  • 70-pint systems - 2,000 square feet at any humidity level.

Can I DIY my dehumidifier installation?

You should have a permanent model installed by a professional to guarantee efficient operation.
Hire a Dehumidifier Installation Professional
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