SUN PURE AIR ANALYSIS
The comparison is listed below:
|
Sun
Pure
|
Care
2000
|
|
| Total unit weight in pounds |
19
|
50
|
| Unit size in inches |
21.5
x 18.8 x 8
|
29
x 14 x 15
|
| HEPA filter square foot |
18
|
80
|
| Carbon weight in pounds |
0.4
|
15
|
| Noise level in decibels |
68
high
|
55
high
|
|
58
low
|
43
low
|
|
| UVGI lamp wattage |
1
@ 8 w
|
2
@ 9 w
|
| Lamp germicidal irradiation |
30
m w-s/cm2
|
64 m w-s/cm2 with 2 lamps
|
| UV effective chamber size |
16"
x 6" x 7"
|
14"
x 15" x 10"
|
|
Micro watt sec/cm squared of effective irradiation power used for killing airborne pathogens |
682
|
12,456
|
| Particle reduction in 1 pass |
10%
|
27%
|
This unit has a motion detector that slows the unit when no one is in the room, supposedly to save electrical energy. However, the pollutants do not lessen when a person is in the room or out of the room. The key to any air cleaning situation is "dilution". Clean the air as best as you can so that when the door is opened and people come in the air can absorb (in effect) the pollutants that get introduced. This way people are breathing the cleanest air possible, all the time. Think of a pail of water that is clear and we put a little mud in it, the water still stays fairly clean, the mud is diluted. Contrast this with a pail of water that is always slightly muddy and then the extra mud is added, this water only gets dirtier.
On the average, for number of units required to equal one CARE 2000 you would need 15.8 Sun units for the same cleaning ability. ( 4.44 + 37.5 + 18.7 + 2.7 ) / 4 = 15.8
There is no real HEPA seal or pressure on the gasket except cardboard stiffness.
The filter monitor is done by time elapsed not by actual pressure drop across the filter.
The manual states is has a backward inclined 390 cfm fan and then in the back it states 265 cfm forward curve fan. It actually is a backward inclined 225 cfm blower. Via my actual tests.
The unit does not stay on high speed because the UV safety switch gets released when the high speed air pressure on the bottom of the grille forces the grille upwards.
The air passages to get to the HEPA filter is less than 3/8" high so the filter will load up from the center where the fan is and after a short period of time will then pass less air. That is why the fan needs to be adjusted into a faster speed as the filter will load up fairly fast. Air flow is not even across the inlet face, twice as much air in the center of the inlet filters, than at the sides. I can see right through the carbon filter and the HEPA media sides are not glued, which means leaks around the media, inside the filter.
