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How accurate are charcoal radon tests?

Findings show radon tests of less than 90 days are imprecise up to 99 percent of the time. A new study finds the only reliable way to measure exposure to radon gas is with a long-term testing kit, 90 or more days. Researchers placed two test kits, a short term (five-day) and long term (90-day) in the same homes.

What can skew a radon test?

A short term test is good at measuring your current radon levels, but these levels can fluctuate due to a number of factors, including:

  • Barometric pressure.
  • Temperature/Season.
  • House construction.
  • Rain soaked ground.
  • HVAC system.
  • Improper placement of the device.

What happens when windows are open during a radon test?

Opening windows at the upper levels actually has the potential to increase radon levels during a short-term test. This is because the increased amount of dilution air that is brought into the house will typically be enough to offset any additional radon gas brought into the house.

Can you be in the house during radon testing?

No, you don’t have to leave your house. But you do need to keep the windows closed during the testing, and only open doors as much as necessary to go in and out.

Can you air out radon?

Ventilation, ventilation, ventilation The second-best way to reduce your radon level, after a mitigation system, is airing out the home. Ventilate the lowest level of the house, whether that be a crawlspace, basement, or if you have a slab foundation, the living area.

How much does it cost to fix a radon problem?

The cost of a mitigation system may vary according to the home’s design, size, foundation, construction materials and the local climate. Radon reduction systems average costs nationally are $1,200 with a range from $800 to $1500 common depending on house and market conditions.

How do they get rid of radon?

There’s no single method that fits all radon removal system needs. Common techniques include: Sub-slab depressurization, where suction pipes are inserted through the floor or concrete slab into the concrete slab below the home. A radon vent fan then draws out the radon gas and releases it into the air outside.

What percentage of homes test positive for radon?

One in 15 homes across the country tests positive for dangerous levels of radon, an invisible, odorless gas that causes lung cancer.