Because Ultra-Pure uses advanced multi-stage air purification technologies including washable prefilters, HEPA filters, activated carbon, ultraviolet light, negative ions, titanium dioxide germicidal sanitizers and optional (on-off) ozone generation, we're able to filter or destroy a whole range of harmful airborne particles that old fashioned single-stage, or even 2-, 3- or 4-stage air purifiers, just can't match.

Absolutely not! Because of our quiet fan engineering as well as multiple filtration technologies that don't put all the work on the fan to begin with, all our air purification units run quietly even when operated at high speed. For example, Ultra-Pure's 899 and 988 models generate less than 50dB (decibels) even when operated at maximum power. That's quieter than your average computer fan and only a little more than the noise a refrigerator generates.

Not at all, unlike, many of our competitor's air purifiers that have exorbitant power needs which can cost you hundreds of dollars per year in electrical costs, Ultra-Pure's energy efficient systems operate on only 40 to 65 watts of power. That's less than the average light bulb and cost you only a few dollars per month even if run continuously 24-hours a day. When you purchase an Ultra-Pure air purifier you are buying direct from our parent company Real Spirit USA.

A Canada-wide trading system will be introduced for emissions of sulphur oxides (SOx) and nitrogen oxides (NOx). The rules for this trading system will be determined as the regulations are developed. Trading will be restricted in areas that have poor air quality to help maintain a minimum level of local or regional air quality. Canada will pursue linking its domestic sulphur oxides (SOx) and nitrogen oxides (NOx) emissions trading system with the existing U.S. system.

The inlet grill draws in dirty air. In most HEPA air purifiers, a washable pre-filter traps larger particles. By definition, a HEPA filter removes at least 99.97% of all particles as small as 0.3 microns. HEPA air purifiers were originally developed by the Atomic Energy Commission to capture radioactive dust particles. Allergens such as pollen, animal dander, mold spores, and dust get trapped in the filter.

Oreck Air Purifiers use a five-stage purification process to clean the air. The diagram below illustrates the various purification stages. The five-stage purification process which Oreck uses effectively filters 95% of particles as minute as 0.1 microns. First, a pre-filter captures large particles such as hair, lint etc. Electricity is used to positively charge smaller particles, which are then locked in by the alternately charged plates of the collector cell.

Blueair air purifiers come with a 10-year limited warranty with regular 6-month replacement of filters. Be sure to fill out and return your Blueair warranty card to ensure that your Blueair warranty is activated.

The Honeywell QuietCare and Enviracaire air purifiers both come with a five year limited warranty. This limited warranty covers repair or replacement of the unit if found to be defective in material or workmanship, within five years of the date of purchase. Be sure to fill out and return your warranty card within ten days of your Honeywell air purifier purchase to activate your warranty.

The air pollutants found in industrial buildings varies widely and depend on the type of activities performed. Non-industrial buildings are not likely to be a source of high levels of any indoor air pollutant. These may include: carbon monoxide, carbon dioxide, biological contaminants such as animal dander, molds and dust mites, volatile organic compounds (cleaning agents, solvents and other), radon , asbestos and heavy metals such as lead and mercury.

Air purifiers remove airborne particulate from the air. Air is drawn through the filter and particles are trapped in the filter system. The filtered air is then re-circulated back through your home.

These machines release negatively charged ions into the air, which are attracted to positively charged allergens and pollutants. These neutral particles then fall harmlessly to the ground where they can be vacuumed or dusted from furniture.

Many air purifiers now include a UV stage whereby the air and its contaminants are exposed to ultraviolet light after the HEPA and Carbon filtration process. UV light in the range of 185 nm to 265 nm is extremely effective in killing microorganisms such as bacteria and viruses by disturbing the DNA of the organism at the molecular level. The at-risk elderly and very young are typically the population for which UV air purifiers are purchased.

Air purifiers take out a lot of the pollutants from our air which can irritate allergies and asthma. These pollutants include airborne particulate as small as 0.3 microns and includes pollen, dust, pet dander, mold spores and smoke.

Generally every 2 - 3 months, but you may want to change them more often. During periods where you are using your HVAC system continuously, we recommend changing monthly to maintain the best indoor air quality. The following chart should assist you: quot;The most important maintenance task that will ensure the efficiency of your air conditioner is to routinely replace your air filters[..

There are many sources of indoor air contaminants. Some are brought by the building's occupants. Humans exhale carbon dioxide. New building materials can contribute to the presence of volatile organic chemicals (carpet, wallpaper, glues, particle board, furniture, etc). Radon naturally occurs in the subsoil and may migrate into the building. Lead is ubiquitous, appearing in the dust matrix as a result of previous lead-based gasoline and paint use.

Gaseous pollutants can be removed from air by means of gas washing (removal of gas by dissolving it in a liquid), by adsorption on a solid or by converting it to other, less damaging gasses. Sometimes certain powders or granule solids can absorb an air pollutant. The air that needs to be purified is directed through an active carbon system or through metal oxides. The gasses can be freed again afterwards, by heating the absorbent.

The manufacturer's warranty varies from manufacturer to manufacturer. They range from one to ten years. Each manufacturer's warranty is clearly marked on each individual product page.

Microban is used in air purifiers because it is an Antimicrobial agent used to treat an air purifiers HEPA filter. The protection provided by the Microban product prevents development of mold, bacteria or mildew growth on the filters surface which can cause bad odors. The life expectancy of your filter is not affected by the Microban.

Only certain ionizer air purifiers have ionizers built in. Unless the air purifier specifically states that it is has an ionizer it is more likely to use a mechanical filter instead.