Photo- meaning light and catalyst- being a component that speeds up a reaction without being consumed; therefore, a “photocatalyst” is a material that, in the presence of light, speeds up a chemical reaction without being consumed. The reaction that is being sped up with LumActiv is the production of hydroxyl radicals from UV light. This is a naturally occurring process that occurs in the atmosphere to help clean the planet. Hydroxyl radicals are known as the “atmosphere’s detergent” for their impressive cleaning power. Water is a co-catalyst in the reaction to clean the air.
SteadySHIELD Glass: Glass surfaces such as windows, solar panels, automotive glass, architectural glass
SteadySHIELD Indoor: Indoor surfaces exposed to mostly indoor light
SteadySHIELD Multipurpose: Surfaces exposed to large amounts of UV light, outdoor applications
SteadySHIELD Primer: Organic surfaces that SteadySHIELD will be applied to, acting as an inorganic barrier. Plastic or other hard hydrophobic surfaces to increase adhesion.
Ensure a clean, dry surface before application. For glass and other hard surfaces a surface degreaser, such as our Glass Cleaner, can be used. If the glass is heavily soiled, a glass scraper may be necessary. If the surface is organic in nature and will be exposed to large amounts of UV exposure, SteadySHIELD Primer should be applied prior to the final SteadySHIELD product.
SteadySHIELD Primer is used under two conditions, the first being on an organic surface to act as an inorganic barrier between the active SteadySHIELD coating (Multipurpose or Indoor) and the substrate the coating is being applied to, such as an organic paint. The SteadySHIELD Primer can also be used to increase adhesion and act as a binding agent between the surface and the coating.
3 to 12 hours are required for the film to fully dry. The dry time can be accelerated with heat so long as the temperature does not exceed 600C. Once the coating has fully dried, the coating will not dissolve in water.
The coating will fully cure in about 2 months. At this point, the coating will have achieved maximum hardness (2H-5H depending on the coating/substrate).
If there is an area of the coating that needs to be reworked, the coating should be removed immediately. Coating can be removed by wiping with water and a cloth.
All tools can be rinsed with water to remove any remaining coating solution.
SteadySHIELD Glass: 2 years, unopened, from the date of manufacture if stored under recommended conditions.
SteadySHIELD Primer: 5 years, unopened, from the date of manufacture if stored under recommended conditions.
SteadySHIELD Indoor: 5 years, unopened, from the date of manufacture if stored under recommended conditions.
SteadySHIELD Multipurpose: 5 years, unopened, from the date of manufacture if stored under recommended conditions.
- ISO 22197: Photocatalytic material – Certified
- ISO 22197-1:2007 (Removal of NOx)
- ISO 22197-2:2011 (removal of acetaldehyde)
- ISO 22197-3:2011 (removal of toluene)
- ISO 22197-4:2013 (removal of formaldehyde)
- ASTM G 154: Artificial Weathering – No Changes
- ASTM D 4585: Humidity – No Changes
- ASTM D 1308: Chemical Resistance – No Changes
TiO2 is titanium dioxide. It is one of the oldest known and well-studied chemical compounds. It is a naturally occurring compound that is widely used range of applications including paints, sunscreen, toothpaste, diary and food products.
Ultraviolet (UV) is invisible, high-energy light making up 6.6% of the incident solar energy that hits the planet from the Sun.
A nanoparticle is any particle whose diameter is between 1-100 nanometers (nm) in size. A nanometer is 1,000,000,000 or 1 billion times smaller than a meter. These small particles have incredibly high surface areas and interesting chemical and optical properties. The high surface area increases the particle’s effectiveness in performing chemical reactions.
IAQ is an acronym for Indoor Air Quality. IAQ usually is used in reference to the air quality in and around homes, and other buildings and structures, especially as it relates to the comfort of building and the health of the building’s occupants. Understanding and controlling common indoor pollutants can help reduce your risk of both short- and long-term health concerns.
While some negative health effects may show up shortly after exposure to an indoor air pollutant may be experienced soon after exposure or, possibly, years later.
Our residential and small business systems do not emit ozone intentionally. According to the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) concentrations of ozone high enough to inactivate viruses are generally much higher than levels considered safe for occupant exposure. While ozone generating devices can be used for the purpose of air cleaning, ozone emitting devices should never be used in occupied spaces due to the negative health effects. While some air purifiers and air cleaning devices emit ozone as a method of air cleaning, others emit a significant amount of ozone as a byproduct of their operation. We recommend only using air cleaning products that have been certified by the California Air Resources Board or are UL 2998 certified for Zero Ozone Emissions.
The typical 1-inch (thick) filter in most residential and commercial systems can be replaced with a filter up to MERV 8. Above MERV 8 higher the additional airflow resistance of high-performance filters can raise static pressure preventing your system fan, blower, from running efficiently. High arresistance may impact the performance of, and even damage the HVAC system. While some systems can handle up to MERV 13, switching to a polarized media electronic air cleaner can provide MERV 13+ filtering, with the same static pressure as a typical MERV 8 filter. This is a great solution since the filter fits in a standard 1-inch filter compartment so there’s no costly ductwork modifications required. If you have a 2-inch or thicker filter you can upgrade it safely with filters up to MERV 16.
Most germicidal UV equipment uses mercury vapor lamps that produce ultraviolet light at 254nm, which is effective at inactivating many pathogens including SARS-CoV-2. Light at this wavelength does not produce ozone, but the mercury vapor lamps also produce ultraviolet light at shorter wavelengths that do produce ozone. Manufacturers have overcome this problem by using titanium-doped quartz in the lamps, which block the ozone-producing wavelengths. These products require careful design, installation and maintenance to be most effective.
In most cases no. The outdoor part of your AC are condenser coils and they typically only connected to the indoors through refrigerant lines—not air ducts—and there is no transmission path for air.
However, there are a few types of systems that do have outdoor air connections. Some window and portable air conditioners may pull in air from outside. In some homes, businesses and multifamily units, heating and cooling may be supplied by Packaged Terminal Air Conditioning (PTAC) units with similar outdoor air intakes. There may also be specific ventilation intakes unrelated to any heating or cooling system like Smart Vents, Evaporative Coolers and some HRV/ERV systems. In all these cases, social distancing rules are recommended between those intakes and people outdoors.
There are many sources of indoor air pollution in homes and businesses. These include combustion sources such as gas, wood, candles and tobacco products; building materials and furnishings, asbestos-containing insulation, wet or damp carpet, and cabinetry or furniture made of certain pressed wood products; products for household cleaning and maintenance, personal care, or hobbies; central heating and cooling systems and humidification devices; and outdoor sources such as radon, pesticides, and outdoor air pollution.
With all of these sources contributing to the poor quality of the indoor we breathe, it’s easy to see how the harmful effects can be difficult to control. For over 4 decades we have been tightening up our homes to make them more energy efficient. This has caused indoor air pollution to rise to levels that the Environmental Protection Agency states is two to 10 times higher than the outside air. The considerable rise in the occurrence of allergic reactions, asthma attacks and other common ailments caused by this increased level of indoor air means the problem is real and only getting worse.
Actually, a dirty furnace or air conditioning system can be costing you a lot of money in utility bills. A poorly maintained cooling and heating system, including dirty ductwork, can cost hundreds in higher utility bills. This can all be prevented with a proper indoor air quality inspection by a trained professional.
Did you know?
According to the EPA (Environmental Protection Agency): “Accumulated debris can restrict the air flow in your air ducts, making your system work harder to heat and cool your home. A buildup of .042 (1/20) inches of dirt on the heating or cooling coil can result in a decrease in efficiency of 21% to 37% increasing your monthly utility and fuel bills.”
Yes, provided your unit ventilates the house with outdoor air. Direct evaporative cooling takes air from outside and cools it with evaporation and sends it indoors. This type of evaporative cooler will increase ventilation rate like an economizer or summer whole-house cooling fan and would similarly reduce risk. Some evaporative coolers do not take their air from outside and do not increase ventilation. Be sure to find out which type you have.
Portable evaporative coolers may be helpful for comfort, they probably won’t reduce risks of airborne infection unless, like direct evaporative coolers, they supply outdoor air to the house.
ASHRAE recommends following guidance from the CDC which includes minimizing contact, having a household plan which includes basic information on how to protect yourself and how to keep your home sanitary.
Additionally, follow the guidance in the Task Force’s Technical Guidance for Residences presentation which is intended to supplement CDC recommendations with options related to controlling virus transmission through the air using the home’s heating, ventilating and air-conditioning (HVAC) equipment and related factors.
This Technical Guidance for Residences includes guidance for all homes, homes with forced-air systems, multi-family homes and guidance for homes with COVID-19 positive or high-risk individuals.
In most cases it is not necessary to upgrade the filter treating the supply of outdoor air. According to current knowledge, there is a very low probability that the virus will enter from outdoors into the house through the mechanical ventilation system. In addition, a higher effectiveness filter may be more prone to clogging and will reduce air flow. One factor that might change this recommendation is if the outdoor air intake is near another building’s exhaust vent or near a location where people congregate.
HEPA is an acronym for High Efficiency Particulate Air filter, a standard defined and developed by the U.S. Department of Energy during the 1940s as part of their efforts to contain the spread of particles and contamination resulting from nuclear testing. Because HEPA filters are more efficient in removing harmful toxins and pathogens from the environment this standard has now been applied to the consumer market for air purifiers and HVAC filters.
To meet the HEPA standard, the filter must remove 99.97% or more of all airborne particles of dust, pollen, mold, bacteria, and viruses with a size of 0.1 to 0.3 microns (µm). To meet the “True HEPA” standard, for every 10,000 particles that are 0.3 microns in diameter, only three of them can pass through the filter.
The diameter specification of 0.3 microns responds to the worst case; the most penetrating particle size (MPPS). Particles that are larger or smaller are trapped with even higher efficiency. Using the worst-case particle size results in the worst-case efficiency rating (i.e. 99.97% or better for all particle sizes).
CAUTION: Some companies advertise HEPA Type and HEPA Like. Unlike True HEPA, “HEPA Type” and “HEPA Like” filters fail the standard. These terms are meaningless and are commonly used in order to confuse consumers into purchasing lower quality filters and purifiers.
To help in comparing the performance of different air filters, the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) developed a method of testing a filter’s Minimum Efficiency Reporting Values, or MERV. This rating system reports the filter’s ability to capture particles between 0.3 and 10 microns (µm). The higher the MERV rating the more efficient the filter is at trapping specific types of particles.