As we spend more time indoors than ever before, the quality of the air we breathe at home is increasingly important. Poor indoor air quality can lead to a host of health issues from allergies and asthma to headaches and fatigue. Two major factors that contribute to suboptimal indoor air are excess humidity and airborne pollutants.
Fortunately, a dehumidifier and air purifier combo unit can address both issues simultaneously. These versatile appliances pull moisture from the air to prevent mold growth while also filtering out particles, allergens, and toxins. If you‘re in the market for a combo unit, this comprehensive guide will help you choose the best model for your needs and budget.
Why Use a Dehumidifier Air Purifier Combo?
Excess indoor humidity and air pollution can create an unhealthy living environment. Here are some key benefits of using a dehumidifier and air purifier together:
Prevents Mold and Dust Mites
Mold and dust mites thrive in humid environments. According to the EPA, keeping indoor relative humidity between 30-50% can significantly reduce mold growth and dust mite populations. Dehumidifiers pull moisture from the air to maintain optimal humidity levels.
Alleviates Allergy and Asthma Symptoms
Air purifiers with high-efficiency particulate air (HEPA) filters can remove up to 99.97% of airborne particles as small as 0.3 microns. This includes common allergens like pollen, pet dander, dust mites, and mold spores. By filtering out these triggers, air purifiers can help alleviate allergy and asthma symptoms.
Removes Odors and VOCs
In addition to particulates, many air purifiers also use activated carbon filters to adsorb odors and volatile organic compounds (VOCs). VOCs are emitted by everyday items like cleaning products, furniture, and paint and can cause health issues. Removing these gaseous pollutants can greatly improve indoor air quality.
Saves Energy and Money
Using a combo unit is more energy efficient than running a dehumidifier and air purifier separately. Many models have energy-saving features like timers, auto shut-off, and variable fan speeds. Lowering indoor humidity can also make a space feel cooler, allowing you to raise the thermostat and save on air conditioning costs.
How Do Dehumidifiers and Air Purifiers Work?
While both appliances improve indoor air quality, they each function differently:
Dehumidifiers
Dehumidifiers work by drawing moist air over chilled coils. As the air cools, water vapor condenses into liquid and drips into a collection tank. The dry air is then reheated and released back into the room. Most residential dehumidifiers can remove between 20-50 pints of water per day, depending on the model and conditions.
There are two main types of dehumidifiers: compressor and thermo-electric. Compressor dehumidifiers are more powerful and can handle larger spaces but also cost more to run. Thermo-electric dehumidifiers use a Peltier module to cool air and are more energy-efficient but have a lower capacity.
Air Purifiers
Air purifiers work by pulling air through a series of filters that trap pollutants and recirculating the clean air back into the room. Most models use a multi-stage filtration system that includes:
- Pre-filter: Captures large particles like dust and hair, extending the life of the other filters.
- True HEPA filter: Removes 99.97% of particles as small as 0.3 microns, including pollen, mold spores, and dust mites.
- Activated carbon filter: Adsorbs odors, smoke, and VOCs.
Some advanced models also include additional filters like UV-C light for killing germs, ionizers for attracting particles, and antimicrobial treatments. The purifier‘s effectiveness depends on the filter quality, size/coverage area, and air changes per hour (ACH).
Key Factors to Consider When Buying a Combo Unit
With so many models on the market, it‘s important to understand the key features and specifications to look for when shopping for a dehumidifier air purifier combo.
Coverage Area and Capacity
One of the most important factors is choosing a unit that‘s properly sized for your space. Dehumidifiers are rated by how many pints of moisture they can remove in 24 hours, typically ranging from 20 to 50 pints for residential units. A 20-pint unit can handle a 500 square foot room while a 50-pint unit can cover up to 3,000 square feet.
Air purifiers are rated by their clean air delivery rate (CADR) which measures how many cubic feet of air are cleaned per minute. The higher the CADR, the more effective and faster the purification. Most models are designed for spaces from 100 to 1,000 square feet.
When choosing a combo unit, opt for one that meets the moisture removal needs of your most humid room and the air purification needs of your largest room. It‘s better to slightly oversize than undersize.
Filtration System and Efficiency
For optimal air purification, look for a true HEPA filter that can remove 99.97% of particles down to 0.3 microns. Many models claim to be "HEPA-type" or "HEPA-like" but these are not as effective. Also consider units with activated carbon filters for odor and VOC removal.
Check the filter replacement cost and frequency as this is an ongoing expense. Some higher-end models have washable or permanent filters that can save money in the long run.
In terms of efficiency, look for models with the Energy Star certification. These use 15-20% less energy than non-certified models. Many also have variable fan speeds and timers to further reduce power consumption.
Noise Levels and Portability
Combo units can be quite noisy, especially on high fan speeds. If you plan to use one in a bedroom or living area, look for models with a low noise output around 30-50 decibels. Some have special "sleep" or "quiet" modes for overnight use.
Portability is another factor to consider, especially if you plan to move the unit between rooms. Look for models with caster wheels, handles, and longer power cords. Also consider the weight and dimensions to ensure it will fit in your intended space.
Drainage Options and Tank Capacity
All dehumidifiers collect water in an internal tank that must be emptied periodically. The larger the tank capacity, the less frequently it will need to be emptied. Some models also have a continuous drainage option that allows you to connect a hose and direct the water into a nearby drain or sump pump.
For max portability, look for tanks with a splash guard and comfortable handle. Some models also have an auto shut-off feature and indicator light when the bucket is full to prevent overflow.
Smart Features and Convenience
Many newer combo units have Wi-Fi connectivity and can be controlled via a smartphone app or voice assistant. This allows you to monitor the air quality, adjust settings, and receive alerts remotely.
Other convenient features to look for include a digital humidistat display, programmable timer, sleep mode, auto restart after a power outage, and filter change indicator light. Some high-end models even have air quality sensors that automatically adjust the fan speed based on the real-time pollution levels.
Top Dehumidifier Air Purifier Combos for 2023
Now that you know what to look for, here are our top picks for the best combo units based on performance, features, and customer reviews:
Best Overall: Frigidaire FFAP5033W1
The Frigidaire FFAP5033W1 is our top pick for its excellent dehumidification and air purification capabilities. It can remove up to 50 pints of moisture per day and has a true HEPA filter that captures 99.97% of airborne particles. It also features a washable pre-filter, digital humidity readout, 24-hour on/off timer, and continuous drain option.
Coverage Area: Up to 1200 square feet
Noise Level: As low as 51 dB
Tank Capacity: 2 gallons
Dimensions: 11.6 x 14.8 x 24.4 inches
Weight: 45 pounds
Warranty: 1-year limited
Price: $329
Best Value: hOmeLabs HME020006
If you‘re looking for an affordable yet effective combo unit, the hOmeLabs HME020006 delivers impressive performance for the price. It can remove up to 22 pints of moisture per day and has a true HEPA filter with three fan speeds. Other features include a 1-gallon tank capacity, auto shut-off, filter change reminder, and a sleek, modern design.
Coverage Area: Up to 1000 square feet
Noise Level: <60 dB
Tank Capacity: 1 gallon
Dimensions: 15.2 x 7.7 x 18.9 inches
Weight: 25.6 pounds
Warranty: 2-year limited
Price: $179.99
Best for Large Spaces: Honeywell TP70WKN
For larger homes and open floor plans, the Honeywell TP70WKN is a powerhouse combo unit. It can remove up to 70 pints of moisture per day and covers spaces up to 4,000 square feet. The HEPA filtration system captures particles, VOCs, and odors while the humidistat automatically maintains optimal humidity levels. It also has a drain pump for continuous upward drainage.
Coverage Area: 4,000 square feet
Noise Level: As low as 48 dB
Tank Capacity: 14 pints
Dimensions: 15.7 x 12.4 x 25.4 inches
Weight: 44.1 pounds
Warranty: 5-year limited
Price: $599
Best Smart Unit: TaoTronics TT-AH046
The TaoTronics TT-AH046 is a high-tech combo unit that can be controlled via the VeSync app or voice assistants like Alexa and Google Home. It features a 4-stage filtration system with a HEPA filter, activated carbon, and UV-C light. The smart air quality sensor adjusts the fan speed in real-time while the digital display shows the current humidity and air quality readings.
Coverage Area: 1,100 – 3,000 square feet
Noise Level: 38 – 51 dB
Tank Capacity: 4 liters
Dimensions: 13.4 x 7.1 x 20.4 inches
Weight: 14.33 pounds
Warranty: 1-year limited
Price: $249.99
Tips for Using and Maintaining Your Combo Unit
To get the most out of your dehumidifier air purifier combo, follow these tips:
- Place the unit in the most humid room and/or the room with the most pollutants (kitchen, bathroom, basement, etc.)
- Ensure there is at least 6 inches of clearance on all sides to allow for proper airflow
- Empty and clean the water tank regularly to prevent mold and bacterial growth
- If using continuous drainage, check the hose periodically for clogs or leaks
- Clean or replace the air filters according to the manufacturer‘s recommendations (usually every 3-6 months)
- Keep doors and windows closed while the unit is running to improve efficiency
- Use the timer and variable fan speed settings to save energy and customize performance
Common Questions and Concerns
Can I run the dehumidifier and air purifier at the same time?
Yes, combo units are designed to perform both functions simultaneously without issue. In fact, drier air can improve the purifier‘s efficiency and vice versa. You can also choose to run one function at a time if desired.
How long should I run my combo unit each day?
It depends on the humidity level, air quality, and size of your space. In general, it‘s best to run the unit continuously until the desired humidity level is reached (30-50%) and then run it intermittently to maintain that level. For air purification, run the unit for at least 12 hours per day on the highest setting you can tolerate noise-wise.
Do I need a combo unit for every room?
Not necessarily, but it depends on the layout and size of your home. A single powerful unit can often service multiple connected rooms or an entire floor. However, if you have a multi-story home or isolated problem areas, you may benefit from multiple smaller units.
How often should I replace the filters?
This varies by model and usage, but most HEPA filters should be replaced every 6-12 months and activated carbon filters every 3-6 months. Many units have a filter change indicator light that alerts you when it‘s time. Some also have washable pre-filters that can be cleaned monthly.
The Bottom Line
A dehumidifier air purifier combo is a smart investment for any home, especially those with excess humidity, poor air quality, or allergy/asthma sufferers. By removing moisture and filtering out pollutants, these versatile appliances can greatly improve your indoor environment and quality of life.
When shopping for a combo unit, prioritize models with a high moisture removal capacity (20-70 pints), true HEPA filtration, and the proper coverage area for your space. Also consider noise levels, portability, drainage options, and smart features that fit your lifestyle and budget.
Regardless of which unit you choose, be sure to use and maintain it properly for optimal performance and longevity. With a little research and care, you can enjoy fresher, cleaner, and healthier air in your home for years to come.
