Radon is a naturally occurring, radioactive gas that can accumulate in homes and pose serious health risks. Since long-term exposure to radon is linked to lung cancer, many homeowners seek to install a radon mitigation system to reduce radon levels and improve indoor air quality. One of the most common concerns is: How long does it take to install a radon mitigation system?
The answer depends on several factors, including the type of system, home size, foundation type, and accessibility. In this guide, we will break down the step-by-step installation process, factors that affect installation time, and ways to speed up the process.
Estimated Time to Install a Radon Mitigation System
The actual installation of a radon mitigation system typically takes 3-8 hours, but the entire process—from initial testing to post-installation verification—can take 2-7 days. Below is a general timeline breakdown:
| Step | Estimated Time |
|---|---|
| Radon Testing | 2-7 days |
| Choosing a Radon Mitigation System | 1-3 days |
| Site Evaluation & Planning | 1-2 hours |
| System Installation | 3-8 hours |
| Post-Installation Testing | 2-7 days |
| Total Estimated Time | 2-7 days |
Now, let’s explore each stage in detail.
Step-by-Step Breakdown of Radon Mitigation Installation
Step 1: Radon Testing (2-7 Days)
Before installing a mitigation system, homeowners need to test radon levels. This is done using:
- Short-term radon tests (2-7 days): These provide quick results and are used to determine if mitigation is necessary.
- Long-term radon tests (90+ days): More accurate but not practical for immediate mitigation needs.
If radon levels exceed 4.0 pCi/L, mitigation is strongly recommended.
⏳ Estimated time: 2-7 days (for short-term testing).
Step 2: Choosing a Radon Mitigation System (1-3 Days)
There are different types of radon mitigation systems, and selecting the right one depends on the home’s foundation:
| Foundation Type | Recommended System | Installation Time |
| Basement | Sub-slab Depressurization (SSD) | 3-8 hours |
| Crawl Space | Sub-membrane Depressurization | 4-8 hours |
| Slab-on-Grade | Sub-slab or Block Wall Depressurization | 3-8 hours |
| Combination Foundation | Hybrid System | 6-10 hours |
⏳ Estimated time: 1-3 days (choosing system and scheduling installation).
Step 3: Site Evaluation & Planning (1-2 Hours)
A radon mitigation specialist will inspect the home and determine:
- The best location for the mitigation system and piping.
- The ideal place for the radon fan (usually outside or in the attic).
- Where the vent pipes will be installed to exhaust radon safely.
⏳ Estimated time: 1-2 hours.
Step 4: Installing the Radon Mitigation System (3-8 Hours)
The actual installation process consists of:
1. Drilling a Suction Point (1-2 Hours)
- A hole is drilled in the basement slab or crawl space membrane.
- The hole is connected to a PVC pipe that will vent radon outside.
2. Installing Vent Pipes (1-3 Hours)
- PVC pipes run vertically from the suction point, through the house or outside walls, leading above the roofline.
- The pipes are secured and sealed to prevent leaks.
3. Installing the Radon Fan (1-2 Hours)
- The fan is mounted in an attic, garage, or outside the house.
- It continuously pulls radon from beneath the home and expels it outside.
4. Sealing Gaps and Cracks (30 Minutes – 1 Hour)
- Any cracks in the foundation or basement floor are sealed to improve system efficiency.
⏳ Estimated time: 3-8 hours.
Step 5: Post-Installation Testing (2-7 Days)
After installation, another radon test is conducted to ensure the system is working effectively.
- Short-term tests (2-7 days) confirm immediate results.
- Long-term tests (3+ months) provide more accurate data.
If radon levels remain above 4.0 pCi/L, adjustments may be needed.
⏳ Estimated time: 2-7 days (for post-installation testing).
Factors That Affect Radon Mitigation Installation Time
1. Home Foundation Type
- Basement and slab-on-grade homes typically require 3-8 hours.
- Crawl spaces take longer due to additional membrane installation.
2. System Complexity
- Single suction points are faster to install.
- Multiple suction points add 1-3 hours to installation.
3. Accessibility & Pipe Routing
- Easier access to the basement or crawl space speeds up the process.
- Routing pipes through finished walls or attics increases installation time.
4. Weather Conditions
- Rain or snow can delay outdoor work.
- Cold weather makes sealing cracks and adhesives take longer to dry.
5. Professional vs. DIY Installation
- Professional installers complete the job in 3-8 hours.
- DIY installation can take 1-2 days depending on skill level.
How to Speed Up Radon Mitigation Installation
✔ Pre-Test Before Hiring a Professional: Complete radon testing in advance to avoid delays. ✔ Schedule During Off-Peak Seasons: Installers may be booked months in advance during peak seasons. ✔ Ensure Clear Access: Move furniture and obstacles away from the installation area. ✔ Choose the Simplest Route for Vent Pipes: The fewer bends and obstructions, the faster the installation. ✔ Work with an Experienced Contractor: Professionals with experience can install the system efficiently and correctly.
Common Questions About Radon Mitigation Installation
1. Can a Radon Mitigation System Be Installed in One Day?
Yes, the installation itself takes about 3-8 hours, but testing before and after can extend the process to several days.
2. How Soon Will Radon Levels Drop After Installation?
Radon levels typically drop within 24 hours, but post-installation testing is needed to confirm effectiveness.
3. Do I Need a Permit to Install a Radon Mitigation System?
Some municipalities require permits, which can add a few days to a week to the process.
4. How Long Does a Radon Mitigation System Last?
A properly installed system lasts 20+ years, but the fan may need replacement every 5-10 years.
5. Is DIY Installation Recommended?
While DIY installation is possible, professional installation ensures proper suction, venting, and compliance with safety regulations.
How Long Does It Take to Install a Radon Mitigation System?
The installation process for a radon mitigation system typically takes 3-8 hours, but the full process, including testing, can take 2-7 days. Factors such as home foundation type, system complexity, and weather conditions can influence the timeline.
To ensure a smooth installation:
- Test for radon levels beforehand.
- Hire a professional for efficient installation.
- Choose the simplest venting route for quick setup.
By following these steps, you can reduce radon levels in your home quickly and effectively, ensuring a safer living environment.
