Aprilaire ALLERGY + PET9550 User manual

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Welcome to a
Healthy Home
ALLERGY+
PET9550™
READ AND SAVE THESE INSTRUCTIONS

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Delivering healthier indoor air has been our business since 1954.
For over 60 years, HVAC professionals have made Aprilaire their
trusted choice for indoor air quality solutions, including: air
purification, ventilation, humidification, and temperature control.
Our network of top quality dealers has installed millions of air
purifiers in homes across North America and sold tens of millions
of genuine Aprilaire replacement filters.
With the introduction of the Aprilaire 9550 series, we are proud
to bring our legacy of quality, features, and innovation to portable
room air purifiers.
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Trusted solutions
for a healthy home.

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Improving the indoor air quality in your
home, starts with Aprilaire — the leader in
Indoor Air Quality (IAQ) solutions.
What is Indoor Air Quality?
IAQ refers to the condition of the air in your
home. The aspects of IAQ include: temperature,
humidity, air purity and ventilation. When these
conditions aren’t properly managed, it can lead
to poor indoor air quality which can impact
the health and wellness of you and your family.
According to the U.S. E.P.A., the air inside your
home can be up to ten times more polluted than
the air outside.
Temperature
Temperature plays an essential role in comfort and health. With
improved programmability, Wi-Fi and zoned controls, comfort
can be improved while preserving energy eciency.
Humidity
The relative humidity in the home can impact asthma, allergies
and skin conditions and increase the incidence of cold and flu.
Control of humidity also protects against mold growth, odors
and damage to the home.
Air Purity
Air purification protects your family’s health (as well as your
HVAC system) from harmful particulates like allergens, mold
spores, dust mites and viruses.
Ventilation
Stale air leads to odors, increased humidity and a high
concentration of Volatile Organic Compounds (VOCs). Without
proper ventilation, comfort and health are at risk.

*Particles 0.3 microns and larger in size.
A Cleaner Home Starts Here
Create a no-fly zone for airborne allergens – including those from your pets,
with the Aprilaire Allergy + Pet9550. Its 4-stage True HEPA filtration system is
99.97%* eective at helping to remove visible and invisible airborne impurities and
allergens. It has a special filter designed to remove allergens specific to pets, like
fine hair and dander. The full filtration system helps to remove dust, pollen, germs,
mold spores, and odors, all of which can trigger allergy and even asthma symptoms
including sneezing, coughing, and watery eyes.

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TABLE OF CONTENTS
About Us 1
Safety Instructions 7
A Closer Look at Your Air Purifier 9
The Control Panel 12
Placement of Your Air Purifier 15
Initial Air Purifier Set-up 17
Care & Maintenance 19
Troubleshooting Tips 25
Answers to Frequently Asked Questions 26
Warranty 28
Congratulations on your purchase of a genuine Aprilaire Air Purifier. You’re making an
investment in one of the most important aspects of health and wellness—the air you and your
family breathe.
In this User Manual you’ll find step-by-step instructions for operation and maintenance, along
with answers to common questions. Take a look around and discover how you can get the
most out of your new Aprilaire Air Purifier.

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IMPORTANT SAFETY INSTRUCTIONS
READ AND SAVE THESE INSTRUCTIONS BEFORE USING THIS AIR PURIFIER
WARNING: Failure to follow these instructions can result in fire, electric shock, injury or property damage.
• Read all the instructions before operating the air purifier.
• Remove plastic shipping bag from filter(s) before turning the unit on. Keep the plastic shipping bag away from children.
• This appliance has a polarized plug (one blade is wider than the other). To reduce the risk of electric shock, this plug is intended to fit
in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified
electrician. Do not attempt to defeat this safety feature.
• Use only with 110-120 VAC outlet. Be sure unit is plugged in firmly and completely. As with any electrical device, plug and unplug the
air purifier with dry hands only.
• Do not operate air purifier with a damaged cord or plug.
• Do not run cord under carpeting. Do not cover cord with throw rugs, runners, or similar coverings. Do not route cord under furniture
or appliances.
• Arrange cord away from trac areas and place cord where it will not be stepped on or tripped over.
• Keep the power cord away from heated surfaces.
• Do not use an extension cord.
• Do not pull on the cord to remove the plug from the outlet. Grip plug and pull from the outlet.

ETL tested for safety.
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• Always turn OFF the air purifier before unplugging the cord from the power supply.
• Always unplug or disconnect the air purifier from the power supply before servicing.
• WARNING: To reduce the risk of fire or electric shock, do not use this air purifier with any solid-state speed control device.
• Do not operate the air purifier where combustible products are present.
• Turn the air purifier OFF and unplug the unit when not in use or before moving.
• Do not operate the air purifier if it malfunctions, has been dropped, or is damaged.
• Do not operate the air purifier outdoors. Do not operate the air purifier in a bathroom, laundry area or any other damp location.
• Never place the air purifier in water or other liquids as electrical shock may occur.
• Do not place the air purifier on soft surfaces. Place the air purifier on a flat, level surface.
• Keep the air purifier at least 12” away from any heat sources.
• Only operate the air purifier in the upright position.
• Do not allow foreign objects to enter the intake or exhaust openings on the air purifier.
• Do not block or cover the intake or exhaust openings of the air purifier in any manner.
• Do not stand, sit, or place heavy objects on the air purifier.
• Never try to take apart or repair the air purifier.

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A Closer Look At Your Air Purifier
Purified Air Outlet Air Quality Indicator Color Meaning:
• Red - Very Poor Air Quality
• Orange - Poor Air Quality
• Yellow - Moderate Air Quality
• Yellow/Green - Good Air Quality
• Green - Very Good Air Quality
Side Handles- Make it easy to carry from room to room
Smart Mode Particle Sensor
Air Inlet

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4-Stage Filtration System
Front
Cover
Fan
Powerful 6
speed fan
Alumina Oxide +
Activated Carbon
Bed Filter
Helps remove pet odors,
VOCs, & gaseous allergy
triggers
True HEPA Type Filter
Removes 99.97% airborne
allergens, including pet
dander, pollen, mold spores,
germs, & other pollutants
larger than 0.3 microns
Pet filter
Traps fine airborne pet
hair & dander
Pre-filter
Captures large to medium
airborne particles

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Top View
Light Sensor Filter Life
Indicator
Control Panel
Lock Indicator
Timer Fan Speed Mode
Indicator
Power
Purified
Air Outlet

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The Control Panel
1. Power Press the button to start the air purifier. (This button will also shut it o.)
• The air purifier will beep 1 time when powered on.
• The air purifier will automatically start in Smart Mode.
2. Air Quality Indicator Light The light bar on the front of the air purifier changes color to indicate the current air quality level as
measured by the Smart Mode Particle Sensor. It moves from red to yellow to green as the air quality improves.
3. Four Operating Modes
Smart Mode
In Smart Mode, the fan speed adjusts automatically to improve indoor air quality based on the Smart Mode Particle Sensor
reading. The fan speed is faster when particle levels are high, and will slow down as air quality improves. The Air Quality
Indicator Light on the front of the air purifier changes color to indicate the current air quality level.
Manual Mode
In Manual Mode, press the Speed button to manually adjust the fan speed.
Sleep Mode
In Sleep Mode, the fan speed automatically adjusts to Low (1), the Air Quality Indicator Light turns o, the control panel lights
dim, and the Timer counts down from 8 hours. The air purifier will automatically turn o when the selected time expires.
In Sleep Mode you can manually adjust the fan Speed and Timer using the control panel.
Turbo Mode
In Turbo Mode, the fan Speed automatically adjusts to Turbo Purifying (6) for maximum cleaning power. The lights on Fan
Speed turn o. You can manually set the Timer for the length of Turbo Purifying you want, and/or Lock the setting.

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4. Fan Speed
Press the Speed button to manually adjust the fan speed from the Sleep or Manual modes.
1. Whisper Quiet Purifying
2. Light Pet Allergen
3. Moderate Pet Allergen
4. Heavy Pet Allergen
5. Extra-Heavy Pet Allergen
6. Turbo Purifying
5. Timer
Press the Timer button to choose a length of operation: 1, 2, 4, or 8 hours. When the set time expires, the air purifier
automatically turns o.
6. Control Panel Lock
The Lock button locks the Control Panel in the current setting.
To engage the Lock, press and hold the Lock button for 5 seconds. The air purifier will beep 3 times, and the Lock
button will light up.
If the control panel is set to Sleep Mode, the air purifier will not beep when the Lock button is pressed.
To unlock, press and hold the Lock button for 6 seconds. The Lock button light will turn o and the air purifier will beep 3 times.
Alternative: Easily unlock the air purifier by simply unplugging the unit, then plugging it back in. This will also turn o the
Lock button light.

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7. Filter Life Indicator
When the Filter Cartridge is at 90% of its capacity, the air purifier will beep 3 times when the power is turned on indicating it is
time to order a new filter cartridge. The Filter button will flash until the Filter Cartridge is replaced and the Filter Life Indicator is
reset.
To reset the Filter Life Indicator, press and hold the Filter button for 5 seconds. The air purifier will beep 3 times and the light for
the Filter button will turn o.
To order a replacement filter
cartridge, go to Aprilaire.com
or call 800.931.0014.
8. Light Sensor
If the room is dark for more than 3 minutes, the air purifier will automatically go into Sleep Mode. When that occurs, you can still
adjust the fan Speed and Timer, and use the Lock function.

Bedroom Overhead View
PURIFIED AIR
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Placing Your Air Purifier
Deciding where to place your air purifier is all about safety and airflow.
Follow the simple steps below to get the most out of your investment.
• Thoroughly read and follow the Safety Instructions in this User Manual.
• As a general rule, you should allow 1 to 2 feet of open space on all
sides of your air purifier, including the top. Air enters through vents
on the sides of the unit. Keep these areas free from obstruction at all
times for maximum cleaning eciency.
• The Aprilaire 9550 was designed to draw impure air through side
vents, expelling purified air through the top vent so it can be placed
near a wall.
• Avoid placing the air purifier in a corner. This makes it more dicult to
eciently clean the air throughout the entire space.
• Air purifiers are designed to eectively clean the air in a room that’s
closed to other rooms and the outdoors. So avoid areas where new,
impure air is continually introduced, as this can significantly reduce the
eciency of the air purifier.

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Initial Set-up
Let The Freshness Begin
1. IMPORTANT: For the initial setup, ensure the air purifier is not plugged into an electrical outlet.
2. Remove the front cover of the air purifier by pulling the front panel away from the purifier, as shown in figure A.
3. Remove the Pre-filter, including the black Fine Pet Hair & Dander Trap, by pressing down on the top tabs and pulling back, as
shown in figure B. Remove the protective plastic bag from the black Fine Pet Hair & Dander Trap and recycle or discard it.
4. Remove the Filter Cartridge from inside the air purifier, remove its protective plastic bag and recycle or discard it.
5. Place the Filter Cartridge back inside the air purifier so:
a. You can see the words “This Side Out” printed on the top of the Filter Cartridge frame.
b. The fabric tab is facing outward so you can use it to easily remove and replace the Filter Cartridge in the future.
6. Return the black Fine Pet Hair & Dander Trap to the Pre-filter.
7. Return the Pre-filter containing the black Fine Pet Hair & Dander Trap to the air purifier by first inserting the 3 tabs on the bottom,
then pinching and inserting the 2 tabs on the top until it snaps into place.
8. Return the front cover panel by inserting the 2 tabs on the bottom and tilting the cover upward to set it in place at the top. The
front cover should be flush with the top of the air purifier.
9. Plug in the air purifier to an electrical outlet to begin air purification.

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Figure A Figure B

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Care & Maintenance
Fresh Filter = Fresh Air
Top reasons you should replace your Filter Cartridge on schedule:
1. Optimize your air quality for the health and wellness of you and your family
2. Maximize the longevity of your Air Purifier
3. Fulfill a term of the Aprilaire® Air Purifier Limited Warranty
Filter Life Expectancy
An Aprilaire Filter Cartridge will last about 6 – 12 months, depending on usage.
Filter Replacement Notification
When the filter is at 90% of its capacity, the air purifier will beep 3 times when the power is turned on. This indicates it is time
to order a new Filter Cartridge. The Filter button will flash until the filter is replaced and the Filter Life Indicator is reset.
How to Order a New Filter Cartridge
To order a replacement filter
cartridge, go to Aprilaire.com
or call 800.931.0014.