Surround Air Multi-Tech
S3500 TiO2 Advanced Air Ionizer

The Most Complete Air Ionizer on the Market
with Six Leading Technologies to Cover Virtually Every Pollutant

Surround Multi-Tech S3500 Ti02 Air Purifier $199 $159 Price Cut

Certain technologies are much better than others at removing different pollutants. With the Surround Multi-Tech S3500, you get the best of the most advanced air purification technologies on the market, all rolled into one air purifier.

The Multi-Tech S3500 Ti02 Air Purifier is Surround Air's most effective air purifier. It has a very powerful fan (180 cfm) for high efficiency and large coverage area, up to 600 sq. ft and very affordable replacement filters.

Looking for a smaller or larger Ti02 Multi-tech air purifier or to cover a smaller or greater square footage? See the top menu, Model Options for a list of Models by square footage covered.

Surround Air S3500 Replacement Filters and Lamps

Surround Multi-Tech S3500 uses these parts:

• The washable HEPA/Prefilter lasts 2 years, depending on volume of particulate. $24
• Ti02 Filter lasts 12 months. $24
• Carbon Filter lasts 12 months or less, depending on amount of chemical pollution. $19
• Ultraviolet (UV) Lamp lasts 12 Months (10,000 hrs). $19

Surround Multi-Tech S3500 Air Purifier outperforms more than 80% of all air purifier models tested by AHAM, yet also includes additional technologies that for other pollutant types that are not factored in by the CADR testing method. The six leading air-cleaning technologies in the Surround Multi-Tech S3500 include:

1. Pre Filter. The air first enters pre filter, capturing the largest particles, which enhances the durability and performance of the other filters.
2. High-Efficiency HEPA Filter. The most effective type of air filter at capturing dust, allergens and other solid particles (including bacteria). HEPA filters are recommended by the U.S. Department of Homeland Security.
3. Activated Carbon Filter. The best type of air filter for trapping chemicals, gases, odors and cigarette smoke. According to Penn State Dept. of Aerobiological researchers, carbon filters serve to remove odors, volatile organic compounds (VOCs) and chemicals that other filters cannot.
4. Photocatalytic (TI02) Oxidation Filter. This filter is coated with titanium dioxide, which produces highly reactive ions and electrons when combined with the UV light from the S3500's UV lamp. These highly reactive ions attach to chemical molecules, bacteria and odor-causing compounds, destroying them through oxidation. Independent tests by research scientists have proven photocatalytic oxidation to by highly effective.
5. Germicidal UV Lamp. The most effective way to destroy micro-organisms, such as germs, viruses, fungi (such as mold) and bacteria. Also destroys micro-organisms including those that are trapped by the HEPA air filter, preventing them from reproducing and recirculating through the room. UV lamps are recommended by the U.S. Centers of Disease Control.
6. Safe and Effective Ionizer. Circulates trillions of negative ions to neutralize floating pollutants throughout the room. A Journal of Hygiene study found negative ions to improve efficiency of filter units, and multiple studies (including those by the U.S. Dept. of Agriculture) have found ionizers to be highly effective against dust, bacteria, etc. Finally, the S3500 ionizer is proven to be safe, producing virtually no ozone whatsoever.

Excellent Dust Removal and Much More

Like many expensive air purifiers, the Multi-Tech S3500 is highly efficient at removing dust particles. Unlike most air purifiers in this class, the S3500 includes multiple technologies to address all the other pollutants that are typically found indoor. This combination of technologies results in several unexpected benefits, such as:

Destruction of Micro-Organisms. Very few air purifiers address the problem of micro-organisms. Airborne germs and viruses are commonly present in indoor environments, circulating sickness among occupants. Other micro-organisms can increase the risk of sickness, such as mycotoxins from indoor mold growth. Furthermore, dust is often loaded with bacteria. The S3500 includes a germicidal UV lamp for a larger dead zone for micro-organisms such as germs, viruses, bacteria and fungi. In addition, the germicidal lamp sterilizes particles trapped in the filters, which can otherwise reproduce and recirculate with other air purifiers. The S3500's photocatalytic filter also helps to neutralize micro-organisms, such as bacteria

Removal of Chemicals, Fumes and Gases. Most air purifiers are equipped with a way to trap dust particles and other allergens. However, very few are able to take care of chemical fumes that are common in households today. Chemicals fumes are emitted by building materials, paint, carpet, and several other sources. Chemicals are also added to the environment frequently through the use of household cleaners. Activated carbon filtration is the most effective filter available at trapping chemicals. The S3500 also includes a photocataytic filter to add to its effectiveness against chemicals.

This is another area that air purifier makers often neglect. Your common dust removal filters will not reduce odors, a common indoor air quality problem. Activated carbon filters and photocataytic filters are effective against odors, which may be chronic (cigarette smoke or mold) or just a temporary problem (cooking) in your home or workplace.

Cigarette Smoke. If you have a smoker in your house or place of work, you need multiple technologies to cover all the pollutants associated with cigarette smoke. An ionizer will help to remove the smoke particles themselves, while the activated carbon filter and photoycatalytic filter will address the chemical pollutants and odors.

Ionizer Benefits. Not all high-end air purifiers include a built-in ionizer, but it is becoming more and more common, due to the clear benefits they offer. In a Journal of Hygiene study, negative ions (produced by an ionizer) were found to improve efficiency of filter units. Ozone-free ionizers (such as that found in the Multi-Tech S3500) do not present any potentially negative side effects at all. Plus, negative ions can remove airborne pollutants where they are floating, without requiring they pass through the air purifier. The S3500's powerful fan effectively circulates these air-cleaning negative ions throughout the area.

How the Surround S3500 Works

The diagram below shows how air flows through the Surround Multi-Tech S3500 Air Purifier:

1. The air first enters the prefilter, capturing the largest particles, which enhances the durability and performance of the other filters.
2. Next is the High-Efficiency HEPA Filter, the most effective type of air filter at capturing dust, allergens and other solid particles (including bacteria). HEPA filters are recommended by the U.S. Department of Homeland Security. The S3500 uses a permanent, washable HEPA, so it does not require replacement.
3. The air then passes through the Activated Carbon Filter, the best type of air filter for trapping chemicals, gases, odors and cigarette smoke. According to Penn State Dept. of Aerobiological researchers, carbon filters serve to remove odors, volatile organic compounds (VOCs) and chemicals that other filters cannot.
4. The next filter is the Photocatalytic Oxidation Filter, coated with titanium dioxide, which produces highly reactive ions and electrons when combined with the UV light from the S3500's UV lamp. These highly reactive ions attach to chemical molecules, bacteria and odor-causing compounds, destroying them through oxidation. Independent tests by research scientists have proven photocatalytic oxidation to by highly effective.
5. Additionally, the Germicidal UV Lamp destroys micro-organisms, such as germs, viruses, fungi (such as mold) and bacteria. Also, it destroys micro-organisms including those that are trapped by the HEPA air filter, preventing them from reproducing and recirculating through the room. UV lamps are recommended by the U.S. Centers of Disease Control.
6. Finally, the safe and effective ionizer circulates trillions of negative ions to neutralize floating pollutants throughout the room. A Journal of Hygiene study found negative ions to improve efficiency of filter units, and multiple studies (including those by the U.S. Dept. of Agriculture) have found ionizers to be highly effective against dust, bacteria, etc. The S3500's ionizer is proven to be safe, producing virtually no ozone whatsoever.

Important Benefits of the Surround Multi-Tech S3500:

• Large Coverage Area as a result of the extremely powerful fan. Covers up to 600 square feet.
• Extremely Quiet Operation ensuring peace and quiet while running, even with its powerful fan. Includes Ultra-Quiet fan setting for virtually silent operation.
• Low Energy Usage despite the mighty power of the Multi-Tech S3500. Includes Ultra-Quiet fan setting for optimal energy savings.
• Low Replacement Costs even when considering there are 6 purification stages.
• Advanced Controls to suit your specific needs. Includes timer and independent Ion/UV control.

Multi-Tech S3500 Specifications:

• Voltage: 100-120 VAC, 60Hz
• Power Consumption: 85 Watts (Highest Fan Setting)
• UV Wavelength: 254 nm (germicidal wavelength)
• Air Volume: 210cfm (Highest Fan Setting)
• HEPA Filter Removal Rate: 99% at 0.3 microns
• Dimensions (in): 15.75" x 5.5" x 16.54"
• Weight (lbs): 11
• Applicable Area: Up to 600 sq. ft.
• Certifications: ETL

Surround Air Guarantee and Warranty

• Surround Warranty: 3-year warranty
• Surround Return Policy: 30-day money-back guarantee (no restocking fees unless unit is damaged))
• Surround Replacement Policy: 90-day replacement policy due to factory defect

U.S. Government Recommendations

The U.S. Government recommends technologies used in the Multi-Tech S3500 air purifier.

U.S. Centers of Disease Control (CDC) recommends air purifier with both HEPA Filter and UV Light. The CDC also recommends UV lights in homeless shelters to prevent the spread of disease, particularly TB (tuberculosis).

Dept. of Homeland Security recommends HEPA air filters, along with a pre-filter to preserve the life of the HEPA filter.

The U.S. Dept. of Agriculture found negative ions (ionizers) to be highly effective against dust and bacteria in recent studies.

Click Here to Order Surround Multi-Tech Air Ionizer Replacement Parts

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Copyright 1997-2010 Carol A. James All rights reserved. Last update: May 28, 2010