- Does the
PuriFresh® Clean Room perform any heat or moisture recovery?
No it does not. In winter, you
will need an electric heater and a humidifier in the room. In summer, you will need a
window-mounted air-conditioner in the room.
- What is true
HEPA filtration?
In true HEPA filtration, 99.97% of all particles 0.3 microns in size are
removed from the air. This is verified by tests using a standard 0.3
micron DOP smoke.
- What level
of HEPA filtration is achieved by the PuriFresh® Clean Room?
It delivers true HEPA filtration.
- How does the PuriFresh®
Clean Room differ from the PuriFresh® Heat Recovery
Ventilator and HEPA Filter?
As discussed in Question 1, above, the PuriFresh® Clean
Room does not perform heat or moisture recovery. It does positively pressurize the
room with true HEPA filtered air while the PuriFresh® HRV/ HEPA
Filter does not. The HEPA filter on the Clean Room is a
single-pass true-HEPA filter. The
HEPA filters on the PuriFresh® HRV/ HEPA Filter are not single
pass. You can expect a very small
amount of outside air to bypass the true-HEPA filter medium and enter the
room unfiltered.
- How long
does the HEPA filter last?
The HEPA filter should last for years.
- What is the
HEPA filter medium made of?
The filter medium is a microscopic fiberglass mat. While it looks like paper,
it is not a wood product. It is not damaged by moisture.
- Why not just
buy a cheaper console HEPA filter and keep the door and widows closed to
my room?
If you do that, the room will not receive required ventilation. The
American Lung Association (ALA), the Environmental Protection Agency
(EPA) and the American Society of Heating Refrigeration and
Air-conditioning Engineers (ASHRAE) all recommend ventilation to improve
indoor air quality (IAQ). Even
with windows and doors closed, there will be some infiltration of air
from the outside and from other parts of the house. The PuriFresh® Clean Room
reverses that infiltration with HEPA filtered air.
- Why not just
buy a cheaper console HEPA filter and keep a widow open a bit?
This will provide fresh air. The fresh air will enter loaded with
particles which will disburse throughout the room before they enter the
console HEPA filter. The console HEPA filter will have to clean out
these particles after they have entered. Since these particles are
continually entering, the air can never be completely cleaned. The
PuriFresh® Clean Room cleans the particles out of the fresh
air before it enters the room.
- Why do I
need ventilation?
Air pollution from volatile compounds is much higher indoors. These
volatile compounds include radon gas, formaldehyde, solvents from
cleaning supplies and beauty supplies, organic compounds emitted by
carpets, furniture, paint, insulation, linoleum, vinyl, electronic
equipment, etc.
- Why do I
need filtration?
Unlike volatile air pollution, which is much higher indoors, particulate
concentrations are much higher outdoors. Hence, scrubbing virtually all
particles from the outside air, which the PuriFresh® Clean
Room does, is very important for healthy indoor air, especially for
allergy and asthma suffers.
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