When Is the Best Time to Test Your Home for Radon Gas

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Best time to test home for Radon Gas
When Is the Best Time to Test Your Home for Radon Gas

Picture an unhurried winter evening. You have closed the windows and turned on the heater, and your house feels like the safest corner of the world. What if we told you the air you breathe could be harmful, even though you can’t see, smell, or feel anything unusual? 

That is the truth of radon gas. It is a silent visitor that can invade homes and stay there without any noticeable symptoms. What is the good news? With adequate testing, it is easy to identify.

Then, what is the most appropriate time for testing for radon gas? Here, we will simplify it in a manner that is easy to understand, useful, and even life-saving.

What Is Radon, and Why Should You Care

Radon is a radioactive gas found naturally in the ground, rock, and water, formed when uranium breaks down. It finds its way into homes through cracks in the foundation, along pipes, or even through well water.

The danger? It is the second cause of lung cancer in the U.S., next to smoking. Radon exposure contributes to about 21,000 lung cancer deaths among American adults every year.

And because it’s colorless and odorless, testing for radon is the only way to know if your home is affected.

When is the Best Time to Test

Briefly, the answer is during colder months.

Here’s why:

  • During the fall and winter, houses are typically sealed, resulting in reduced ventilation.
  • Heating systems create pressure differences that draw radon gas into your home from the soil below.
  • This helps easily detect radon levels, and it is usually precise.

Experts recommend testing for radon from late fall through early spring, roughly from October to April, when windows are shut, and your home is sealed.

How Often to Test for Radon

It is not enough to test it once and then forget about it. Just because your house was safe a few years ago does not mean it will remain so now.

You are expected to test for radon:

  • When you purchase a new house (particularly before the closing time).
  • The EPA recommends testing your home for radon every two years, or more frequently if you make significant changes.
  • Test after major renovations like finishing a basement or adding insulation, as these can alter radon levels.
  • When a neighbor has a high radon level in their test. 
  • Replacing an old HVAC system, installing a new one, or pumping a sump pump.

This is because there may be variations in radon levels due to changes in soil, weather fluctuations, and even foundation movement.

So, when wondering how often to test for radon, think of it like checking a smoke alarm. You are not supposed to forgo it simply because it worked the last time. 

Testing for Radon

The radon tests fall into two categories:

Short-term tests

  • Short-term tests measure radon levels over 2 to 7 days.
  • Best for on-the-spot quick checks or when selling a house.
  • During colder months.

Long-Term Test Kits

  • Measures the values over 90 days or more. 
  • Provides a more accurate estimate of radon exposure at your residence.
  • They are good for homeowners who want a clear picture throughout the year.

Both test kits are easy to use and can be purchased in hardware stores and online. Simply place the test kit in a basement or the lowest level of your house and follow the instructions provided on the kit. 

Naturally, to get it right, you can employ the services of a certified radon professional who will remove the element of guessing.

What happens When You Find High Levels

EPA suggests that you take action when the radon level is equal to 4.0 picocuries per liter (pCi/L) or greater. However, there is still a possibility of risks in instances where levels range between 2.0 and 4.0 pCi/L over a long period.

Fortunately, the mitigation systems used to counter radon are cheap and very effective. These mitigation systems safely vent radon gas outdoors, effectively reducing indoor levels.

Why People Delay Testing for Radon (And Why You Shouldn’t)

Honestly speaking, testing for an invisible and odorless gas is not high on anyone’s agenda. Some consider it unnecessary, but others assume that new houses are safe.

However, radon does not take into consideration the age of your home, its decor, or the frequency of house cleaning. Any home can be affected by it, whether it was constructed in 1900 or last year.

Fact: 1 out of 15 houses in the U.S. has unsafe radon levels. 

Concluding Remarks: Protect What Matters the Most

Determining when to test your home for radon gas is not a matter of a checklist or lifestyle choice; it is a mandatory practice to ensure the safety of everyone who lives in the house. 

  • The most suitable period for testing would be during colder periods.
  • You should perform it once every 2 years or following modifications to your home.
  • Take short- or long-term tests whenever needed.
  • If your radon levels are high, don’t worry, effective mitigation systems can quickly lower the risk.

At Pro-Spect, we are not just home inspectors; we are the guardians of the homes we inspect. Our team is certified to provide high-quality and convenient radon testing services in as little time as possible, so you can receive the results and expert advice promptly. 

If you want to buy a house, you need to finish a basement, or you simply want to breathe easier, Pro-Spect FL is there to offer assistance.

Book your radon test now and take the first step to a healthier and safer home.