GermGuardian AC5000 3-in-1 Air Cleaning System

The GermGuardian AC5000 3-in-1 air cleaner features True HEPA filtration, UV-C germ-fighting protection, excellent odor reduction, and is perfectly sized for home or office.
In stock

This product provides relief from: Bacteria & Germs, Dust Allergies, Fragrances & Odors, Mold & Mildew, Pet Dander, Pollen

Buyers Guide: Air Purifiers

Choosing a Portable Air Purifier


When your allergies are acting up, one of the best ways to feel better fast is to get away from whatever is causing the reaction.  Sometimes simply opening a window can ventilate a room with clean air and provide relief. Other times, weather makes this option impossible or allergens may also be present in the new air.  In such a case, an air cleaning system may be useful.

Air cleaners remove allergens from indoor air.  They can be installed in the ductwork of a home’s central heating, ventilating, and air-conditioning (HVAC) system to clean the air in the whole house or a portable room system can be used to clean the air in a single room only.   Installing a whole-home system may not be in your current budget, but depending on the type of allergy you are suffering from, a portable system may be sufficient for your needs and your wallet.

Types of Air Cleaners

There are a variety of air pollutants that can cause allergic reactions.    Air pollutants fall into two categories:  particulate matter and gaseous pollutants.  Particulate matter includes dust, smoke, pollen, animal dander, tobacco smoke, dust mite allergen, and mold spores.  Gaseous pollutants include the vapors from gas cooking stoves, vehicle exhaust, paints and pesticides.    Choosing the best air cleaner depends on the type of allergen causing your individual reactions.  Different air cleaners are better at removing particulate matter from the air while others are preferred for removing gaseous pollutants.

For example, if you are particularly sensitive to dust mite allergen, waking up each morning stuffy and sneezing, you should consider a particulate matter air cleaner in your bedroom.  The EPA has divided them into two types: mechanical and electronic.  Mechanical air filters use a fan to pull air through filters where particles become trapped and cannot escape back into the air. High Efficiency Particulate Air (HEPA) filters fall into this category.

Electronic air cleaners use a process called electrostatic attraction to trap particles.  They also use a fan to draw air in, however the air then passes through a section of the machine where the particles are given an electrical charge.  The charged particles are drawn to a series of flat plates called a collector where they accumulate until the filter is replaced or cleaned.    Although the process is similar, air cleaners called ionizers or ion generators do not have a collector.  They simply charge the airborne particles and expel them back into the air where they attach to nearby surfaces, such as walls or furniture, or attach to one another causing them to settle faster until they can be vacuumed or cleaned up.

If paint fumes or other household odors are bothering you, an air cleaner that removes gaseous pollutants is a better choice.  Gaseous air filters remove gases and odors by using a material, such as activated carbon, to absorb the pollutants.  These filters are typically intended to remove one or more gaseous pollutants from the air that passes through them, but may be specific to one or two types of gas.  It is important to choose an air purifier that is designed to remove the specific gas or odor that is affecting you.

In addition to air cleaners that using a filtering process to remove allergens from the air, there are also systems that will actually destroy pollutants.  Some use ultraviolet (UV) light technology.  These cleaners are called ultraviolet germicidal irradiation (UVGI) cleaners and photocatalytic (PCO) cleaners.  UVGI cleaners use radiation from UV lights that may destroy viruses, bacteria, allergens and mold.  Typically such systems are used in conjunction with an air filtration system.  PCO cleaners use a UV lamp along with a substance called a catalyst that reacts with the light.  They are intended to destroy gaseous pollutants by converting them into harmless products, but do not actually remove particulate matter from the air.

One more type of pollutant destruction system is an ozone generator.  It uses a UV light or an electrical discharge to intentionally produce ozone.  However, as you may know, ozone is a lung irritant that can cause adverse health effects.  Ozone also has little effect in removing most indoor air contaminants, thus are not always the safest or most effective choice.


(Mechanical or Electronic)

Air filters Particles Ineffective in removing larger particles because most settle from the air quickly and never reach filters.
Gas-phase filters Gases Used much less frequently in homes than particle air filters. The lifetime for removing pollutants may be short.

Other Air Cleaners

UVGI Biologicals Bacterial and mold spores tend to be resistant to UV radiation and require more light or longer time of exposure, or both, to be killed.
PCO Gases Application for homes is limited because currently available catalysts are ineffective in destroying gaseous pollutants from indoor air.
Ozone generators Particles, gases, biologicals Sold as air cleaners, they are not always safe and effective in removing pollutants. By design, they produce ozone, a lung irritant.


Measuring the Effectiveness of an Air Cleaner

The effectiveness of a portable air cleaner, regardless of what you are trying to remove from the air, is measured by the clean air delivery rate (CADR).  Developed by the Association of Home Appliance Manufacturers, the CADR is a measure of the cleaning speed.  Since individual filters vary in their ability to remove different particles, three CADR's for a given device are typically measured: smoke, pollen, and dust.  While an individual portable system may not achieve its rated measure under all circumstances, it does allow comparison between different makes and models.  Typically, the higher the CADR, the more effective the air cleaned will be.  When purchasing a system for your personal use, choose one with the highest CADR for your specific allergy. If you are treating a pollen allergy, consider a purifier with a high CADR for pollen, as stated on the label.

When looking at the CADR ratings, you must also take into account the size of the space in which you will be using your air cleaner.  Portable air purifiers are only meant to clean the air in a single room, not your entire house.  Therefore, if you are having problems at night and when you wake up in the morning, you may want to purchase a particulate matter air purifier specifically for your bedroom.  If you are also concerned about odors in the kitchen, you should consider a gas-phase unit for the kitchen area.  Regardless of what type you choose, you must have an accurate measurement of the square footage and in some cases, the cubic footage for that particular room in order to choose a machine that will be effective.

To calculate your room’s approximate square footage, multiply the length of the room in feet by the width of the room in feet.  To calculate the cubic footage, multiply the length of your space by the width of your space and multiply that by the ceiling height.  Most manufacturers list an optimal square foot area of coverage for their air purifiers, so you'll want to choose a model that is rated to cover the size of your room.  You might also consider choosing a model designed for an area larger than yours for better cleaning at a lower, quieter speed.

Another important measure of unit effectiveness is the cubic feet per minute (CFM) rating. This number represents how many cubic feet of air passes through the unit in any given minute. It gives you an idea of how quickly an air purifier will clean the complete volume of air in your room. Typically, the higher an air purifier's CFM rating, the faster the air in the room will be purified. One more measurement is the air changes per hour (ACH). ACH indicates how many times an air purifier filters the entire volume of air in your space per hour. Those who are looking for relief from allergies and asthma should look for an air purifier that can produce at least 3 to 4 air changes per hour.

Noise Levels

Once you have determined what allergens you need to remove from the air and what size system will work best in your room, there are several ways to narrow down your choice of air cleaner based on your personal preferences.  Noise is an important one, especially if the unit will be used in the bedroom.

Because of the fan element, most air purifiers will emit some amount of noise, depending on the purification speed you choose. Some people need complete silence while sleeping while others enjoy “white noise” in the background.  If noise is a concern to you, look for an air purifier with a decibel (dB) rating for each fan speed. You can compare these ratings to the sounds made by other common household items which in turn will give you a better idea of the level of sound an air purifier will make.

0 dB Hearing Threshold
10 dB Breathing
20 dB Falling Leaves
30 dB Whisper
40 dB Raindrops
50 dB Average Home
60 dB Normal Conversation
70 dB Vacuum Cleaner

While a decibel chart can be helpful, remember that other factors, such as where in the room the purifier is placed, the amount of furniture and choice of flooring can also affect the noise level while the unit is in use.   Many units come with multiple fan speeds.  If noise is a particular concern to you, the option of a lower fan speed may be something to consider.

Other special features that may decrease the amount of noise are a programmable timer and a remote control.  A remote control allows you to turn the unit off and on or change fan speeds without having to leave the comfort of your bed or sitting area.  A programmable timer can be used to automatically turn the system on or off at certain times of the day or night to cut down on noise and to save energy.

In addition, manufacturers offer a variety of other special features to consider when buying an air purifier.  Some offer digital controls for setting fan speeds and timers easily and accurately.  If you think you will be moving your unit from room to room, you might want to look for a one with carrying handles or wheels for easy relocation.  Some systems even come with air quality monitors to sense the level of pollution in a room and filter replacement lights to let you know when to change the filter.

As with any purchase, the more features you opt for, the more likely the cost will increase.  So, in deciding which unit is best for you and your budget, don’t forget to think about maintenance costs.  Look at the cost of replacing filters and how often they need to be replaced in order to get an accurate idea of the true cost of an air cleaning system before buying.  Some brands are designed to need new pre-filters every three months and new HEPA filters every year. Others have filter packs that last up to 5 years.  When filters are not replaced regularly some filtration ability is lost and the motor of the unit could be damaged, so it is important to invest in the maintenance of your unit as well as the unit itself.

GermGuardian® AC5000 3-in-1 Air Cleaning System by Guardian Technologies™ for small to midsize rooms is perfectly sized for home or office. Its sleek, modern-looking, yet simple 28" tower design belies the power within. Seldom do you find an air purifier at this price point that offers True HEPA filtration, UV-C germ-fighting protection, and excellent odor reduction. So many customers owning the AC5000 have given it their vote of confidence for its unique ability to tackle dirty air, lingering odors, irritating allergens, and harmful germs and bacteria.

The AC5000 performs 5 levels of complete air cleaning using a multi-stage all-in-one filter, plus UV-C technology and Photocatalytic Titanium Dioxide to improve indoor air quality:

Cleaning Level Filter Type
and/or Technology
What is Removed
1 Pre-Filter Large particles, like dust, lint, pet hairs and larger pet dander.
2 True HEPA Filter 99.97% of airborne allergens and other microparticulates as small as 0.3 microns.
3 Carbon Filter + Photocatalyst Household odors. Activated charcoal absorbs smoke, odors and gases. Photocatalytic Titanium Dioxide, activated by the UV-C light, provides a second potent level of odor reduction, and also prevents the growth of germs, bacteria and mold.
5 UV-C Light ‐ 8W Bacteria, viruses and mold spores. UV-C light inactivates a microorganism, like a bacteria or virus, by penetrating its nucleus and permanently damaging its DNA. As a result, it either dies or is unable to reproduce or spread.

The GermGuardian AC5000's attractive, uncomplicated control panel features a push button on/off UV switch – a nice feature that let's you decide when you want UV protection. A blue light illuminates under the unit's top rim when UV power is turned on. The AC5000 also features a rotary dial to power the unit on and select fan speed. When set on Low, the AC5000 is extremely quiet, and only moderately louder on Medium. While noticeably louder on High (sound approximates that of a normal conversation), many customers find they use the high setting for quick or maximum air cleaning. The small footprint and tower-style design of the AC5000 mean it virtually can be placed anywhere, and its built-in carry handle and lighter weight make it very portable.  5-Year Manufacturer's Limited Warranty.

Replacement Accessories – one (1) each included with the AC5000 GermGuardian 3-in-1 True HEPA air purifier - additional replacements sold separately:

  • FLT5000 Replacement Filter C Pack – This genuine Guardian Technologies™ combination filter for the AC5000 consists of three (3) filter layers – a pre-filter, True HEPA filter, and activated charcoal filter with photocatalytic titanium dioxide. The FLT5000 can also be ordered as a substitute for the discontinued FLT5111 two-piece filter previously sold with the AC5000 air purifier.

  • LB5000 UV-C Replacement Bulb – This genuine Guardian Technologies™ bulb replaces the UV-C bulb that comes in the AC5000 and AC5250PT air purifiers.


  • Unique air cleaning system comes complete with UV-C, True HEPA, and Odor Reduction
  • Five stages of air cleaning help reduce allergens, pollutants, bacteria, viruses, molds, smoke and odors
    • Three-Stage Filtration:
      • Pre-filter for large particles
      • True HEPA for 99.97% of allergens and other micro irritants
      • Activated Charcoal filter for gases and odors
    • Two-Stage UV-C Sanitization and Deodorization:
      • 99.9% effective at killing germs
      • Activates photocatalytic titanium dioxide for enhanced odor reduction
  • Doctors recommend the use of HEPA filtration air cleaners to their allergy and asthma patients
  • UV-C used by many hospitals to sanitize surfaces and kill germs
  • Separate on/off switch for UV-C light
  • Depending on use:
    • Replace combination filter every 6-8 months
    • Replace UV-C bulb every 10-12 months
  • Three fan speeds (low, medium, high)
  • For rooms up to 186 sq ft (approx. 12.5 x 15 feet)
  • Energy Star® rated
More Information

The GermGuardian AC5000 3-in-1 air cleaning system is more than just a filter. It's 3 layers of filtration and 5 levels of cleaning power, including a True HEPA filter to remove allergens, a UV-C light to kill viruses, bacteria, and mold spores, and a combination Activated Carbon filter with photocatalytic titanium dioxide to eliminate undesirable odors. Stylish, simple tower design with small footprint fits in nicely anywhere.

Room Size

186 sq. ft. (approx. 12.5' x 15')

Recommended For

Allergies, asthma, dust, germs, mold spores, pet hair, pet dander, odors, gases and smoke

Best Fit

Best for those with allergic sensitivities who want a multi-purpose True HEPA air cleaner with UV-C sanitizing power and great odor reduction

True HEPA Filtration


Particle Filtration Efficiency

99.97% to 0.3 microns

Particle Removal

Dust, dust mite allergen, pollen, pet dander, mold spores

Gas and Odor Removal

Household odors and smoke

VOC Removal


Optional Filters


Unique Features / Benefits

UV-C light with its own on/off switch kills germs and enhances odor reduction

CADR: Dust rating


CADR: Pollen rating


CADR: Smoke rating

120+ (per manufacturer)

ACH (air changes per hour)

1 time (186 sq. ft. room)

Airflow (cubic feet per minute)


Filtration System

Multi-stage filtration including:
• Large particle pre-filter
• True HEPA filter
• Photocatalyst + carbon filter
• UV-C light for germs (8W)

Number of Filters to Replace

1 Multi-Layer Combination Filter

Replace HEPA Filter

Every 6-8 months (in filter pack)

Replace Pre-Filter

Every 6-8 months (in filter pack)

Replace Other Filters

Every 6-8 months (in filter pack)

Dimensions (H x W x D)

27.25" x 6.1" x 9.5"

Color choices

Dark Charcoal Gray

Product Weight

10.5 lbs

Packaged Weight

13.25 lbs

Shipping Weight

23 lbs

Noise Level - (min-max decibels)

42-62 dBA (est.)


• Manual power knob ‐ fan speeds
• Pushbutton UV bulb switch

Remote Control


Number of Fan Speeds


LCD Display




Programmable Cycles or Timer


Sleep Mode


Auto Fan Mode (auto adjusts based on air quality)


Particle, Gas or VOC Detector


Filter Status Indicator


Filter Reset function


Other Indicators

Power On/Off indicator

Other Features

Small footprint ‐ 6.1" x 9.5"

Casters or Handles

Built-in Carry Handle ‐ back

Air Inlet


Air Outlet


Housing Construction


Fan / Motor Assembly


Energy Consumption (watts)

60 W

Power Requirements

120 V, 60 Hz

Power Plug

6-foot power cord, 2-prong polarized plug


0.5 Amp

Energy Star®


AHAM-certified CADR

Yes ‐ (per manufacturer)

Approvals / Other Certifications


Ozone Emission


Manufacturer's Warranty

5-Year Limited

Instructions ‐ GermGuardian® 3-in-1 Air Cleaning System AC5000

Please see Owner's Manual tab for operating and care instructions, including full instructions on changing the Combination Filter pack and the UV-C Bulb.


  • The AC5000 is ready to be used right out of the box.
  • For proper air flow, place the unit on a flat surface at least one (1) foot from any wall or furnishing.
  • Plug the polarized 2-prong plug into a 120V AC outlet.

Combination Filter – Care and Replacement:

  • Replace the Combination Filter (#FLT5000 Replacement Filter C) approximately every 6-8 months for optimum performance. When the HEPA filter media begins to turn from white to grey or black the combination filter should be changed. The genuine Guardian Technologies™ replacement filter can be ordered from National Allergy, and combines three (3) layers of filtration, including:

    • Pre-Filter – captures large particles like dust, lint and pet hairs.
    • True HEPA Filter – traps 99.97% of airborne allergens and pollutants as small as 0.3 microns that pass through the filter.
    • Carbon Filter + Photocatalyst – Activated charcoal absorbs household odors. Photocatalytic titanium dioxide is activated by the UV-C light, providing a second potent level of odor reduction, and also preventing the growth of germs, bacteria and mold.
  • Note that the pre-filter can be cleaned between filter changes using the brush attachment of your vacuum cleaner.

  • Remember that filter service life is related to the volume of air that passes through the purifier and the amount of contaminants in the air. If the air you are purifying has unusually high levels of airborne particulates or contaminants, the service life of the filter may be shortened.

  • Do NOT try to wash or immerse the combination filter or any its filter layers in water – they are NOT washable.

UV-C Bulb Replacement:

  • Please carefully read and follow all instructions provided by the manufacturer.

  • Replace the UV-C Bulb (#LB5000) approximately every 10-12 months, depending on use.

  • Replacing the UV-C Bulb is easy. The protective Metal Shield covering the UV-C Bulb will need to be removed (requires removal of two (2) Phillips-head screws) in order to access the bulb.

  • WARNING:  Be sure to unplug the air cleaner from the power outlet before servicing or replacing the UV-C bulb. Never look directly at an unprotected, lit UV-C bulb, as direct exposure can be harmful to the eyes and skin.

Click here to view the Owner's Manual for the GermGuardian® AC5000 3-in-1 Air Cleaning System.