How Much Does It Cost to Get Rid of Radon?

how much does it cost to get rid of radon

Radon is a natural gas with radioactive particles. It comes out of the earth and mixes with the air we breathe.

It has no color, smell, or taste, making it hard to detect by natural means unless one conducts radon testing at home.

Among other things, radon is believed to cause lung cancer second to cigarette smoking when exposed for extended periods.

For that reason, the Environmental Protection Agency and the United States Surgeon General’s Office suggest radon testing twice a year.

How much does it cost to get rid of radon, and how can you do this?

How Do I Get Rid of Radon in My Home?

If you decide to reduce the radon levels in your home, it is better to hire a state-certified professional contractor, as suggested by the EPA.

These qualified contractors have the technical knowledge and the necessary skills to lower radon levels in your house.

To start, try to ask your state’s EPA office for a copy of the list of certified, licensed, or registered service providers in your area.

Ask for the radon mitigation cost estimates and references from different contractors and verify their credentials before agreeing to anything.

Most importantly, make sure that you have a contract from your chosen service provider before proceeding with the work.

There are four different radon mitigation systems that contractors generally use. These systems aim to achieve the following:

  • Discharge the radon gas from the soil away from the house
  • Release the radon gas out of the walls, preventing reentry
  • Venting out the radon gas out of the rooms and preventing reentry
  • Venting out or filtering the radon gas out of the water

How Long Does It Take to Get Rid of Radon?

Besides the cost, some folks also want to know how long these contractors will remove radon from their homes.

Generally, contractors can remove radon from your home in one to three days.

After the mitigation, your house needs to undergo another testing to see if there’s any change.

How Much Does It Cost to Get Rid of Radon?

What concerns most homeowners is the average cost of radon mitigation. Understandably, they are worried that they won’t be able to afford it.

Since there are different variables to consider, radon mitigation cost estimates may vary.

A professional radon mitigation expert provides reliable evaluation and recommendations.

Generally, how much does radon mitigation cost?

The average cost of radon mitigation can range between $800 and $2,500 depending on your home’s design and size and what reduction method is used.

After the installation, there will be additional annual expenses for the mitigation system’s daily operation.

The national average cost for removing radon gas is around $975. That amount does not include the initial professional testing, which is about $150 to $800.

Radon Reduction Techniques

Contractors use different methods to lower radon levels. They use lower-level pressurization and depressurization.


Depressurization is available in active and passive categories.

Active Suction or Depressurization

This system is the most common and widely used by professional contractors. It also comes in several sub-types, as explained below.

Sub-Slab Depressurization

This system type is also called soil suction and would typically cost around $1,000 to $3,000. It removes the trapped gas underneath basements or crawlspaces.

PVC suction pipes are installed under the foundation, running up to the roof or a specific corner in the yard.

These PVC pipes have an inline fan along its length that continuously operates to create a vacuum effect, preventing radon gas from entering the house.

The mitigation system’s installation cost ranges from $500 to $3,000 for three to seven hours of work.

The price and work duration depends on the house structure and its size.

Additionally, you also need to buy a radon fan amounting to $100 to $300 and a $10 to $20 suction monitor. The price of the fan depends on its power and size.

This system uses different applications, like block, drain tile, or sump hole, which comes in various price ranges.

  • Drain Tile Suction System

This system typically costs $800 to $1,700. It utilizes the drain tiles surrounding the house by making a suction area underneath.

Drain tiles around the house are standard for houses with drainage issues or constructed in regions with high water tables.

  • Sealed Sump Pump Hole

You need around $800 to $2,500 to install this system. It uses actual sump pump cracks where the pump is located.

Contractors will seal the top of the crack to concentrate the vacuum effect underneath the house’s foundation.

There will be an additional sump pump installation fee of $700 to $1,800 if you choose to add this to the mitigation system.

how much does it cost to get rid of radon

  • Block Suction Method

A block wall suction system ranges from $1,500 to $3,000, as it uses cinder block construction.

It will create suction inside the hollow walls, but it’s not as effective as sub-slab.

Passive Soil Suction System

Passive system price ranges from $500 to $2,500. It has the same principle as the active system but without the fan.

Instead, there will be PVC pipes running below the slab or crawlspace going up to the roof. They can run the tube through the house or outside the walls.

It relies on the chimney effect, air currents, or pressure differentials in releasing radon.

This system is not very practical for homes with high radon levels since radon gas is more weighty than regular air.

Luckily, this system is easily convertible to an active system by adding a fan through the PVC pipe.

One example of a radon fan to consider is this one from Fantech.

Finished Lower Level Pressurization

Basement pressurization usually costs around $500 to $1,000. Contractors seal the lower levels before they blow air into them.

The process resists the vacuum created by the chimney effect. It prevents radon gas from seeping into the house’s foundation.

However, this mitigation method is only useful for airtight houses and should only be used as a temporary solution.

Sealing the Home

The average price for sealing the basement usually averages $4,000 if you choose to hire a professional.

You can also spend around $400 to $1,000 to caulking products and make it a DIY project.

This method may decrease the radon levels in your homes if combined with other mitigation systems.

Radon Reduction by Foundation

There are three foundation types, and each one requires a specific radon removal method that would typically cost around $1,200.

Drilling a hole is necessary for basements for easier PVC pipe installation under the slab. Utilizing the sump pump hole is also an acceptable option.

For on-grade slabs, mitigators install PVC pipes from outside the house. The process may also require some drilling through the floor.

Contractors use the encapsulation technique as they cover the dirt with a special plastic sheet. They ensure that the PVC pipe extrudes from this vapor barrier.

The crawlspace encapsulation alone may cost $1,500 to $15,000 on top of the mitigation system installation.

Additionally, the amount of the radon membrane or plastic sheet is around $800 to $3,000.

Water Treatment Solution

How much does radon mitigation cost for water?

We all know that this odorless and tasteless gas is also present in water.

Contractors would generally install aeration devices or granular activated carbon filters (GAC) between the home and the main water supply.

This mitigation method costs around $1,000 to $4,700.

GAC filters are more affordable than aeration devices.

Why Radon Mitigation Prices Varies

Most radon mitigation systems are specifically designed for single houses.

If you have noticed, there are different prices for each method. The price also varies due to a lot of factors.

Some newly-built houses have a passive mitigation system in place. Upgrading it to an active one will not require them to spend a lot.

However, as mentioned above, houses with crawlspaces need to spend more on mitigation system installation.

The size of the house also plays a significant role when it comes to mitigation costs.

Using premium-quality parts and hiring professional contractors also costs more.

Nevertheless, investing in these systems are worth every penny, as it concerns your whole family’s health.

Typically, professional contractors are more skilled and have a lot of experience in providing you with exemplary work.

Radon reduction prices may also vary depending on your location, mainly because of competition for the same services.

Maintenance Costs

Most radon mitigation systems work non-stop using electricity and parts that may need maintenance or replacement.

Try to set aside $100 to $200 for the annual inspection and maintenance expenses to ensure that your radon reduction system works appropriately.

Since some of the mitigation systems are powered by electricity, expect an increase with your utility bill.

What Is the Average Cost for Radon Mitigation?

From all the radon mitigation cost estimates we have provided, you can easily choose one of the numerous methods to reduce radon levels in your homes.

It will also help if you use a device like the Safety Siren Pro 3 radon detector to alert you if the gas level exceeds the normal range.

When determining how much does it cost to get rid of radon, remember to ask contractors for a fixed quote.

In this way, you will not be surprised by additional charges while the work is in progress.

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