NAFA CAFS EXAM QUESTIONS WITH CORRECT SOLUTIONS||100% GUARANTEED PASS||UPDATED 2026/2027 SYLLABUS||A+ GRADED||NEWEST VERSION

NAFA CAFS EXAM QUESTIONS WITH
CORRECT SOLUTIONS||100%
GUARANTEED PASS||UPDATED
2026/2027 SYLLABUS||A+
GRADED||<<NEWEST VERSION>>
NAFA Guide to Air Filtration, 5th ed. 2014, page 5.3

Possible advantages of _______ ______ ____ _________ include ease of use and
cleaning, filtration flexibility(particulate and molecular) and a variety of different
sizes and styles. - ANSWER ✓ Portable media air cleaners.

NAFA Guide to Air Filtration, 5th ed. 2014, page 6.2

The ANSI/ASHREA Standard 52.2 filter test method does not provide for the
testing of electronic air cleaners because... - ANSWER ✓ The synthetic test dust
contains carbon black and tends to short out the electric connections and renders
the unit inoperable.

NAFA Guide to Air Filtration, 5th ed. 2014, page 6.4

Factors affecting electronic air cleaners design and efficiency are:
1.)
2.)
3.)
4.)
5.)
6.)
7.) - ANSWER ✓ 1.) Particle size
2.) Velocity through the filter
3.) Voltage on the ionizer and collector
4.) Collector plate spacing
5.) Collector plate loading
6.) Ionizer spacing

,7.) Ozone

NAFA Guide to Air Filtration, 5th ed. 2014, page 6.4

An agglomerator must always be used with after filters. True or false? - ANSWER
✓ True.

NAFA Guide to Air Filtration, 5th ed. 2014, page 6.5

An _____________ ___ classified filter is a filter that, when clean, will burn
moderately when attacked by flame or emit moderate amounts of smoke, or both. -
ANSWER ✓ ANSI/UL 900

NAFA Guide to Air Filtration, 5th ed. 2014, page 7.8

Any filter that can be listed under UL 900 can also be listed under UL 586. True
or false? - ANSWER ✓ False. UL 586 is a specific standard developed for HEPA
filters.

Particles larger than __ micron can cause erosion of turbine compressor blades. -
ANSWER ✓ 10 micron

NAFA Guide to Air Filtration, 5th ed. 2014, page 9.10

Particles __ micron and smaller cause deposits on and fouling of turbine
compressor blades. - ANSWER ✓ 5 micron

NAFA Guide to Air Filtration, 5th ed. 2014, page 9.10

Match the following microorganisms with how they replicate.

-Viruses
-Bacteria
-Fungi(mold)

-Cell division
-Spores
-Using host's DNA - ANSWER ✓ -Viruses: Uses host DNA
-Bacteria: Cell division

, -Fungi(mold): Spores

NAFA Guide to Air Filtration, 5th ed. 2014, page 10.2

The American Institute of Architects(AIA) states that the minimum filter
efficiency for recirculation of air within individual isolation rooms be
_________________. - ANSWER ✓ 99.97% DOP (HEPA)

NAFA Guide to Air Filtration, 5th ed. 2014, page 10.6

ASHRAE recommends that orthopedic operating rooms, bone marrow transplant
rooms, and organ transplant rooms have 3 banks of filters for air entering the room.
What are the MERV ratings of those 3 banks? - ANSWER ✓ First bank: MERV 8
Second bank: MERV 14
Third bank: Terminal HEPA

NAFA Guide to Air Filtration, 5th ed. 2014, page 10.7

A TB isolation room must be kept under a ____________ pressure.

a.) Positive
b.) Negative
c.) Laminar
d.) Static - ANSWER ✓ b.) Negative

NAFA Guide to Air Filtration, 5th ed. 2014, page 10.8

All biological safety cabinets require periodic certification and filter change. True
or false? - ANSWER ✓ True.

NAFA Guide to Air Filtration, 5th ed. 2014, page 10.10

ANSI/ASHRAE Standard 62.1-2013 Section 5.9 states that schools shall have a
filter efficiency of at least MERV __. - ANSWER ✓ 8

NAFA Guide to Air Filtration, 5th ed. 2014, page 12.8

What is the primary reason for a prefilter? - ANSWER ✓ Life extension of the
final filter.