Radon is a noble gas which means it does not stick to anything including furnace filters, so filters will not reduce radon levels. Filters will capture radon decay products which are charged particles. There is some discussion among experts that this may reduce the health risk but the furnace fan would need to run continuously and filter every occupied room. The EPA does not recommend radon remediation using filters. A large percentage of the humidity in a basement is from soil gas infiltration.

There is a treatment used to bring down high blood lead levels. Certain medicines combine with lead so the body can get rid of it more easily. The doctor will decide if a child needs this treatment. The best way to lower an elevated blood lead level is to prevent continued exposure to lead. See similar questions...

There are several proven methods to reduce radon in your home, but the one primarily used is a vent pipe system and fan, which pulls radon from beneath the house and vents it to the outside. This system, known as a soil suction radon reduction system, does not require major changes to your home. Sealing foundation cracks and other openings makes this kind of system more effective and cost-efficient. Similar systems can also be installed in houses with crawl spaces. See similar questions...

High-Efficiency Particulate Air filters (HEPA) are a type of media filter that is very tightly woven. This unique filter was initially developed during World War II to prevent discharge of airborne radioactive particles from the exhaust of nuclear reactors. HEPA filters have since become the Gold standard technology in purifying the air in industrial, medical, and military settings. HEPA filters are now the most popular choice for portable residential air cleaners. See similar questions...

Filtration is an important – and often overlooked – aspect of a home comfort system. We spend an increasing amount of time in our homes. Filtration impacts not only the air you and your family breath but the air that travels through your heating and cooling system. When you allow dirty, dusty air to move through your system, you’ll soon have clogged components which will impact system operation and efficiency. See similar questions...

Answer this first by asking: Have you retested to confirm that the levels are actually too high? In other words, if a short-term test (2-7 days) was used, did you conduct an additional test and the average of the two tests taken or was the reading from a long term test taken for 90 days or more? Radon levels can vary from day to day so conducting one short-term test may not reflect the true level of your home. See similar questions...

If the test was short-term and below 10 pCi/L, retest in the same location with a long-term test device to determine the long-term concentration. If the initial test exceeds 10 pCi/L, retest in the same location with a short-term device. Radon mitigation should be performed if the average of two short-term tests or one long-term test is at or above 4 pCi/L. See similar questions...

Radon exposure is based on a combination of how long you are exposed and the radon level. In general it is not necessary to ventilate a house unless the mitigation system cannot be installed in the next few weeks and the radon levels are very high (greater than a hundred pCi/l). The best ventilation is leaving a basement window continuously open and/or a bedroom window open at night. See similar questions...

The HEPA (High Efficiency Particle Arresting) filter was developed by the US Atomic Energy Commission to filter out sub-micron particles. All True Medical HEPA is laser-tested and must remove a minimum of 99.97% of all particulate matter greater than 0.3 microns in size. A human hair is about 300 times too large to penetrate a HEPA filter. See similar questions...

Not necessarily. Look for vacuums carrying the CRI vacuum cleaner testing program label. Many units are not HEPA filter units, yet are very effective in dust containment. HEPA filters may add additional cost to the overall operational cost of the vacuum. No seam is invisible, seams should be kept to a minimum, running the length of the area making sure the natural light does not strike across the seam. See similar questions...

The percentage of dirt that a filter removes. The filter paper or 'media' determines what the oil, air or fuel has to pass through and where the dirt is trapped. The more twists and turns a particle of dirt has to take, the more likely it is to be captured. The higher the efficiency, the higher the % of dirt retained by the filter. Filters are least efficient when new and become most efficient just before "plugging". See similar questions...

High Radon levels can be successfully reduced to below the national Reference Level at a cost, which is small compared with the value of a typical house. A potential purchaser of a house may ask for a radon measurement to be carried out, if the house is located in a designated High Radon Area. Back to the Top See similar questions...

The main source of Radon gas in houses with elevated indoor radon levels is generally the ground beneath the house. The radiation emitted from granite walls, fireplaces, or tabletops is insignificant. Back to the Top See similar questions...

Yes, if they are true HEPA filters, but many planes are not equipped with them. Airplanes are a common venue for human-to-human transmission of viral infections due to proximity of travelers and recycling of air within the cabin. You should not travel if you are ill or have a fever. If a neighbor is coughing or appears ill near you, move and tell the flight attendant. This is particularly important if you are flying from a country that has documented avian influenza cases in humans. See similar questions...