
HEPA Bypass Air Filtration Systems
Healthy Climate
Indoor Air Quality Systems
®
HEPA20
HEPA40
HEPA60
Highly effective filtration for cleaner,
healthier indoor air

High-Efficiency Particulate Air (HEPA) Filtration Systems
99.97% efficiency rating for
removal of small, breathable
particles at 0.3 micron
Bypass configuration quietly
circulates and cleans the air
throughout the home
Works with your central
heating and cooling
system to enhance the air
throughout your home
Combats all classes of
pollutants—particles,
bioaerosols and odors/
chemical vapors*—for
best possible air filtration
performance
Pollutants like pollen, bacteria, viruses and dust find their way into your home’s
air every day. That’s a problem, because these particles and bioaerosols can
cause poor indoor air quality, which impacts both your home environment
and your health. At the very least, poor air quality can make your home
uncomfortable. And, if you’re one of more than 50 million Americans who
suffer from allergies,*** poor air quality can make your home very unhealthy.
SOLUTIONS FOR A CLEANER, HEALTHIER HOME ENVIRONMENT
A Healthy Climate® high-efficiency particulate air (HEPA) bypass filtration
system can go a long way toward improving the air you breathe. Using
the same filtration technology found in hospital operating rooms and
science labs, a HEPA system removes nearly all allergy-inducing
contaminants, including even the smallest particles and bacteria. It filters
and freshens the air throughout your home, so you can breathe easier.
Finding a Solution
THE PROBLEM WHY IT’S A PROBLEM THE SOLUTION
Particles
WARRANTY**
5-year limited warranty on
covered components.
* Optional carbon canister removes odors and chemical vapors.
** Applies to residential applications only. See actual warranty certificate for details.
***Source: National Institute of Allergies and Infectious Diseases
2
(Pollen, dust mites,
dirt, pet dander)
Bioaerosols
(Bacteria, viruses,
mold spores, fungi)
Odors/Chemical Vapors
(Perfumes, cleaning
supplies, paints,
solvents, pet odors,
cooking fumes)
Small, respirable particles
can aggravate allergies and
respiratory conditions.
Biological contaminants like
mold can cause or worsen
asthma, as well as hay fever
and other allergies.
Airborne chemicals can cause
headaches, fatigue, nausea,
rashes, dizziness and, in
some cases, severe illness.
HEPA Filtration Systems
High-efficiency particulate
air (HEPA) bypass filtration
systems are designed to
capture even the smallest
of particles and keep them
from recirculating back into
your home’s air. HEPA
filtration systems provide
fast, effective cleaning,
completely filtering the air
throughout your home many
times a day.

Near-perfect particle filtration
Prefilter
HEPA
Filter
Optional
Carbon Filter
Odors/Fumes
Healthy Climate® HEPA bypass
filtration systems are 99.97%
efficient at removing small particles
at 0.3 micron—contaminants
that standard filtration systems
can’t effectively stop. Particles
smaller than 2.5 microns pass
through the lungs and into the
bloodstream, increasing the
likelihood of illness. The HEPA
system minimizes your exposure to
potentially harmful pollutants.
Respirable Particles and Bioaerosols
Pollen
100 microns
Bacteria
1 micron
Spore
10 microns
Virus
0.01 micron
One micron = 1/25,000 of
an inch in diameter
Scale: Approximately 8000:1
Source: Pennsylvania State University
Powerful, yet quiet, performance
The system acts like a vacuum, drawing
air out of the return duct, cleaning
it and then cycling it back into your
home. The system can also operate
independently of your HVAC system to
isolate and filter a specific area of your
home. The filtration process involves
three main steps:
1) Contaminated air passes through
a pre-filter, trapping large dirt and
dust particles.
2) Air then flows through the HEPA
filter, which captures nearly
all remaining particles and
bioaerosols.
3) Finally, air passes through a
charcoal/carbon filter in the
standard unit to absorb odors
and chemical fumes. An optional
carbon canister is available for
enhanced absorption.
HEPA FILTRATION PROCESS
“True” HEPA filter media – 99.97%
efficient at 0.3 micron in removing
particles and bioaerosols
Optional carbon canister – Helps trap
and remove odors
Fast, effective cleaning – Completely
filters the air in your home many
times a day
Sealed, bypass design – Retains
particles and keeps them from escaping
Low operating costs
Insulated cabinet prevents condensation
ASTM E981 tested to be free of sensory
irritancy
HEPA Filtration System Specifications
HEPA20 HEPA40 HEPA60
Airflow (nominal) at 120 VAC 180 CFM 250 CFM 500 CFM
Power Consumption (nominal) 125 watts 125 watts 225 watts
MERV 6 Prefilter Life 12 mos. 12 mos. 12 mos.
Carbon Canister Life (optional accessory) 6 mos. 6 mos. 6 mos.
HEPA Filter Life (min.) 2-5 years† 2-5 years† 2-5 years
†
Will vary based on the severity of the environment.
Note: Due to ongoing commitment to quality, all specifications, ratings and dimensions are subject to change without notice.
†
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HEALTHY CLIMATE® SOLUTIONS
Whatever problem you’re having with your home’s air, you’ll find the perfect Healthy Climate® solution. When it comes
to contaminants like particles and chemicals, there’s no better defense than the PureAir™ air purification system. You also
have a choice of filtration systems and germicidal lamps, plus products that help balance moisture levels and improve
airflow. With so many innovative options for enhancing and customizing the air inside your home, the Healthy Climate
collection helps make your home a better place to breathe.
© Lennox Industries Inc. 2006
Visit us at www.lennox.com, or contact us at 1-800-9-LENNOX.
(72M77) HEPA 3/06 PC44280