The Best Whole House Air Purifier In 2021

Have you ever considered the benefits of purchasing a whole house air purifier for your home?

According to the Environmental Protection Agency, Americans spend on average 90% of their time indoors, and a lot of that time will be spent inside the home.  What’s alarming about this statistic is that often the air inside our homes is 2 to 5 times more polluted than the outdoor air.  When we breathe in this polluted air, we can become susceptible to all sorts of health problems, like allergies, asthma, viruses, and even lung disease and cancer.

But on the bright side, there’s a lot we can do to tackle indoor air pollution. Simple steps like cleaning regularly, properly ventilating rooms, and using a powerful air purifier can make a huge difference in improving your home’s indoor air quality and your long-term health.

I’ve looked at several whole house air purifiers and came up with five machines that you might want to consider in your search. If you’re in a rush, then my top recommendation would be the Aprilaire 5000 Air CleanerTo know the exact price of each air purifier, click the “Check Price” button below each individual review.

What To Know Before You Shop

A whole house air purifier is powerful enough to filter and clean the air throughout your home.  This is typically achieved through a connection to your existing heating, ventilation and air conditioning (HVAC) system.  In this way, a whole home air purifier will filter the air to remove harmful pollutants and particles while your home’s HVAC system works to heat or cool the air throughout your house.

The key benefits of a whole house air purifier include:

  • Cleans Air: this is main benefit of installing a whole house air purifier. The system will work to remove all the nasties from your indoor air, including: dust, pollen, mold spores, pet dander, bacteria, viruses, and other tiny particles.  They can kill germs and mold spores, break down allergens and volatile organic compounds (VOCs), and even remove smoke.
  • Eliminates Odor: while the machine works to filter the air to remove pollution and tiny particles, it will also keep any smells and odors from those particles out of your house.  This is great for bathrooms and kitchens and other areas in the house that are prone to odor build up.
  • Removes Dust: not only is this great for your allergies and asthma, but it will also keep your electronics and furniture in great shape as well.
  • Improves HVAC Systems: a whole house air purifier can actually help your HVAC system to run more efficiently for longer by removing particles that would otherwise flow into the system and cause issues over time.

Typically, a whole house air purifier will be more expensive upfront compared to portable room air purifiers; however, whole house units require much less maintenance and will work efficiently throughout the house.  Because they can be quite complex to connect to your HVAC system, these machines will likely need to be installed by a professional.

Personally, what I love about whole home air purifiers is that they are quiet, efficient, space saving, and require very little maintenance once they are properly installed.  You won’t have to regularly clean filters or rotate a machine from room to room.

If you do not have an HVAC system, you can also find pretty powerful portable air purifiers as well.  Some even work in spaces up to 1,500 square feet.  I’ve included two in my reviews below.  These will work great in large spaces and tend to be slightly more affordable up front.

Best Whole House Air Purifier Reviews

1. Aprilaire 5000 Air Cleaner

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best whole house air purifier - Aprilaire 5000

Aprilaire is a trusted name in air purification systems, and their Aprilaire 5000 Air Cleaner is a great option for a whole home air purifier. It connects directly to your existing duct system and can work well in homes up to 2,500 square feet.  You get a lot of bang for your buck with this system, earning it my rating for best budget pick.

  • Removes 94% of dust from the indoor air you breathe
  • Eliminates 98% of tiny particles in the air (e.g., bacteria)
  • Can remove up to 99% of airborne pollen and mold spores, which are high allergy triggers
  • Does not produce ozone
  • Low maintenance and long lasting
  • Customers commented on how quickly the machine worked to remove particles and dust from the air and to reduce allergy symptoms
  • Filter must be changed 1-2x per year if using continuously

2. Amaircare 18-A-1KME-00 10000

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best whole house air purifier - amairecare

The Amaircare is the most expensive model on my list, but also the most powerful.  This machine can filter air in homes up to 7,500 square feet in size, effectively removing 99.97% of particles down to 0.3 micron in size.  It comes with a toggle on / off control, and 3 layers of filtration to really get the air clean. I like that this machine incorporates a carbon filter, which will really help to tackle any odors in the air.

  • Powerful (covers up to 7,500 square feet)
  • 3-layer filtration system (pre-filter, HEPA filter, carbon filter)
  • Long lasting HEPA filter, requiring a change every 3 to 5 years
  • Very expensive
  • Regular and costly filter changes (annual for the pre-filter and every 6 months for the carbon filter)
  • Consumes a lot of energy, so could hurt your utility bills each month

3. pureAir 3000

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best whole house air purifier - pureair 3000

The pureAire 3000 is a great whole home air purifier that doesn’t require a connection to your duct or HVAC system.  Very powerful, this machine covers up to 3,000 square feet of indoor space.

This system utilizes 4 technologies to remove mold, mildew, bacteria, germs, viruses and odors from the air.  First, this machine uses Photocatalytic Oxidation, which produces a plasma to break down mold, bacteria, and other pollutants.  Next, Ionization works to infuse the air with negative ions, which will cause any particles in the air to clump together and fall to the floor so that they can be swept up or vacuums and not inhales into our lungs.  Then there is the Advance Oxidation technology, which breaks apart VOCs and destroys pollutants using ozone.  Finally the Electrostatic filter works to filter out any leftover particles in the air.

I like that you can place this machine in your home, without an expensive or complicated installation process.

  • Powerful, covering up to 3,000 square feet
  • East to install and maintain
  • Customers have reported that the house smells cleaner after use
  • It does use ozone, which is a concern to some consumers
  • It can be noisy when running

4. Coway Airmega 400 Smart Air Purifier

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best whole house air purifier - coway airmega 400

This smart air purifier can clean an area up to 1,500 square feet. The Coway Airmega works quietly and effectively to intelligently clean the air in your house. Using a dual-filtration system, it is capable of removing 99.97% of particles in the air.

With the pollution indicator, you can manage and monitor your air quality at all times. Making two air changes each hour, this machine uses a combination of a True HEPA filter and activated carbon to reduce and pull in particles down to 0.3 microns. It can also get rid of over 99% of VOCs and get rid of odors.

Included with the Coway Airmega is a permanent and washable pre-filter that catches large dust particles. You also get a colored LED ring that lets you know how dirty or clean your indoor air is all day long. You get five modes including a smart mode that automatically adapts to the room making adjustments to improve air quality all day long.

  • Powerful for a portable machine (covers up to 1,500 square feet)
  • Dual filtration removing up to 99.97% of particles in the air
  • It uses smart technology, so it’s not running constantly
  • This is a solid machine with quality parts
  • The charcoal filters are expensive
  • This is a large device that takes up a lot of counter space

5. Alen BreatheSmart 75i Air Purifier

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best whole house air purifier - Alen BreatheSmart

Perfect for large rooms, the Alen BreatheSmart 75i Air Purifier can clean the air in a room up to 1,300 square feet. It uses an antimicrobial true HEPA filter allowing it to get rid of fur, dander, pollen, dust, chemicals, odors, and VOCs.  In addition the true HEPA filter, it also uses an activated carbon filter to eliminate any nasty odors Cleaning the air every 30 minutes, the BreatheSmart 75i runs on only 45 watts, making it one of the lowest energy-consuming air purifiers on the market.

Using cutting edge technology, the BreatheSmart 75i uses a passive laser sensor that can catch particles in the air while also adjusting the speed of the fan when in auto mode making sure it operates smoothly. The unit is just over two feet tall, which is comparable to an end table or nightstand in height. The true HEPA filters last 12 to 15 months before needing to be changed, and all of the 75i air filters use an antimicrobial spray that stops the growth of mold and bacteria.  It is a super-powerful, but quiet machine that can capture 99.97% of particles in the air down to 0.3 microns. Plus, the LED color display lets you keep an eye on your air quality at all times.

  • Powerful for a portable machine (covers up to 1,300 square feet)
  • Dual filtration removing up to 99.97% of particles in the air
  • It uses smart technology to monitor indoor air quality, so it’s not running constantly
  • This is a solid machine with quality parts
  • The activated carbon filter replacements are expensive
  • Quite large for a portable machine

The Air Control Guy Winner: Aprilaire 5000 Air Cleaner

The winner of the Best Whole House Air Purifier is the Aprilaire 5000 Air Cleaner.  Aprilaire is an industry leading brand, and this machine has the best value for money on my list.  While you will need a professional to help install the air purifier, the ongoing maintenance is minimal, and the results will be well worth it.  Many customers have used this machine for over 5 years with no issues or maintenance problems, and many trust the continued effectiveness of the machine.

If you don’t think a whole house air purifier is right for you, you can also check out my reviews for really great portable air purifiers here.

For more like this, check out our latest posts on Humidity Control (Humidifiers & Dehumidifiers) and Air Purifying.

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