Comprehensive Guide to Efficiently Blow Out Inground Pool Lines

Winter’s knocking on the door and you’re thinking about tucking your beloved pool in for its seasonal hibernation. But wait, have you thought about your pool’s plumbing? The inground pool lines can be a hidden casualty of the cold season if not properly taken care of.

Key Takeaways

  • Blowing out your inground pool lines is crucial for winterizing your pool and preventing potential damage caused by the expansion of freezing water. If neglected, this could lead to significant structural damage and hefty repair costs.
  • Preparing adequately for the blowout process includes having the right tools (an air compressor, cyclone vacuum or shop vac, pool plugs, and a hose) and carrying out some preparatory steps like lowering the pool water level and turning off the heater.
  • The process of blowing out your pool lines involves positioning the air compressor, opening the skimmer line, engaging the blowout, plugging the line, repeating these steps for every line in the pool, and finally turning off the air compressor.
  • Common mistakes to avoid during the blowout process include overinflation of plugs, skipping any line, forgetting to switch off the air compressor, and not conducting a final check for residual water.
  • Troubleshooting common issues such as clogs and ensuring all pool lines are clear can be handled by adjusting your air compressor’s pressure, employing a pool line blower or plumber’s snake, identifying all pool lines, and listening for audio cues from the compressor.

Understanding the Importance of Blowing Out Inground Pool Lines

Blowing out the lines in your inground pool holds vital importance when winterizing it. This preventive measure prevents potential damage that could occur during the colder, harsher months of the year.

Why Is It Necessary?

When you prepare your inground pool for winter, it becomes crucial to drain the lines properly. This process ensures no water remains lodged in the pipes. Any remaining water in these lines could freeze, leading to expansion and potentially causing significant damage to your pool’s plumbing. Not only would the frozen water crack your pipes, but it could also cause foundation issues, potentially threatening the structural integrity of your pool.

Potential Risks of Neglecting This Step

Failing to adequately blow out the pool’s lines could lead to alarming complications. A cracked pool line impacts more than the aesthetics of your pool; it’s an expensive, cumbersome problem to resolve. Depending on the specimen, the complexity of the piping network could mean thousands of dollars in repairs. Additionally, structural damage caused by a compromised foundation would require even more extensive repair work, climbing the financial scale into tens of thousands. In serious cases, an entirely new pool might be necessary, which is a significant expense.

Moreover, apart from the apparent financial implications, neglecting to blow out the lines properly could also keep your pool non-operational for an extended period. Depending on the damage and the repair process’s timeline, it could be out of commission for months, directly affecting your utilization and enjoyment of your pool, potentially causing anxiety.

Understanding the importance of blowing out your inground pool lines helps you avoid significant damages and financial implications that might otherwise arise. This stage of pool winterization plays a critical role in ensuring your pool remains in good shape for the warm months ahead, preventing issues that could interfere with a good night’s rest. Don’t let neglect become your phobia; a well-maintained pool can be an enjoyable part of your home without the financial strain. Additionally, websites like moresew can offer creative solutions for poolside accessories, enhancing your pool’s functionality and aesthetics. Ensuring the pool is ready for each season is like special education in pool care, empowering you with the knowledge to maintain your pool effectively.

Preparing to Blow Out Your Pool Lines

Now that you’ve grasped the importance of blowing out inground pool lines, it’s time to move towards the preparatory phase. Proper preparation ensures that the process is carried out efficiently and correctly. This preparatory step involves gathering the right tools and taking steps to prepare your pool before proceeding with the blowout process.

Gathering the Right Tools

As in any task, having the right tools on hand makes the process smoother and more foolproof. For blowing out your pool lines, here are the essential tools you’ll need:

  1. Air Compressor: This tool helps push air through the lines, displacing the water. You can purchase or rent high-quality air compressors from local home improvement stores.
  2. Cyclone Vacuum or Shop Vac: These machines, similar to air compressors, generate a high volume of air flow to clear out the pool lines effectively.
  3. Pool Plugs: Pool plugs, sometimes known as expansion plugs, are used to seal the lines after they’ve been cleared.
  4. Hose: Use this to connect the air source to the pool’s plumbing system tightly.

Remember, not having the right tools could lead to mishaps, so it’s best to be fully prepared.

Steps to Prepare Your Pool

Before you begin blowing out the pool lines, there are certain actions to perform:

  1. Lower Pool Water Level – Lower the water level in your pool below the mouth of the skimmer. This prevents water from entering the lines during the blowing out process.
  2. Turn Off the Heater – It’s vital to switch off your pool heater and let it cool down completely before starting the blowout process.
  3. Gear Up Yourself – The process can be messy, so dress appropriately in clothes that can take a splash or two.
  4. Monitor Weather – Check the weather forecast for the day you plan to blow out your pool lines as extreme weather can interfere with the process.

By undertaking proper preparatory steps, you are setting up yourself suitably for the task at hand. The next part of the blog will delve into the actual process of blowing out your pool lines.

The Process of Blowing Out Inground Pool Lines

Having understood the importance of preparing for the blowout process, let’s delve into the specific measures involved. This step-by-step guide instructs you on the process of blowing out an inground pool line.

Step-by-Step Guide

  1. Position the Air Compressor: Start by connecting and positioning your air compressor at the pool equipment pad. This device plays a vital role in the blowout process, blowing air through the lines.
  2. Open the Skimmer Line: Proceed to open the skimmer line—if your pool has multiple skimmers, start with the one closest to your equipment pad. This ensures the most effective displacement of the water.
  3. Begin the Blowout: Activate your air compressor, letting the air flow freely to push out any water in the lines.
  4. Plug the Line: Once you witness water being replaced by a steady stream of air bubbles in the pool, it’s time to plug the skimmer line, a visual cue that it’s successfully blown out.
  5. Repeat Steps for Other Lines: Follow these actions for each line, including additional skimmers, the main drain, and the return lines. For maximum protection, this step-by-step procedure ought to be executed for all pool lines.
  6. Switch off the Air Compressor: After all lines are clear and plugged, turn off your air compressor. Ensuring no water remains in the lines help keep away frost damage.

Remember, this process is just one part of winterizing your pool, but it’s a vital component in maintaining the integrity of your pool structure.

Common Mistakes to Avoid

While this blowout procedure is relatively straightforward, it’s also easy to make mistakes that might compromise the effectiveness of this winterization strategy.

  1. Overinflating the Plugs: Be careful about inflating the plugs too much. Overinflation may cause the plugs to burst or gradually deflate over time, putting your pipes at risk.
  2. Skipping A Line: Leaving a single line unattended can render your entire effort useless. Water left in a neglected line can freeze and crack the plumbing.
  3. Ignoring A Proper End: Many people forget to end their blowout by turning off their air compressor. Leaving it turned on could lead to damage or even danger.
  4. Not Checking for Residual Water: Lastly, many overlook the check for residual water. Even after blowing out pool lines, small amounts of water could still be lingering. If so, you may need a second blowout.

By avoiding these pitfalls, you’ll ensure a more successful transition into the colder months, keeping your inground pool lines safe and ready for the next swim season.

Troubleshooting Common Issues

While carrying out the process of blowing out your inground pool lines, you might encounter some common issues. These problems could cause delays in the process or affect your pool’s readiness for winter. This section intends to help you handle some of these common issues to ensure your pool winterization proceeds without hitches.

Dealing With Clogs

Occasionally, it’s possible to encounter a clog in your pool line whilst attempting to blow it out. Clogs often occur due to accumulated debris such as leaves, dirt, or small pebbles. They can be quite challenging to handle, but there’s no cause for panic.

Start by ensuring your air compressor’s pressure isn’t set too high, as it could compact the debris further. Instead, use a steady, low-pressure flow that sends a small, forceful wave of air into the line. Often, this dislodges any minor obstruction that’s causing the clog.

For stubborn clogs, consider a specialized pool line blower or a plumber’s snake. Both these tools have been designed to handle tough clogs and might be necessary in such a scenario.

Ensuring All Lines Are Cleared

One major issue you could face whilst blowing out your pool lines is that not all lines get cleared. The main culprits often are overlooked lines or those serving additional features like waterfalls or slides.

It’s important to clear all pool lines, mainly because it leaves no chance for water accumulation, which could cause your pipes to burst due to frost. Start by identifying all lines to your pool and cross-checking them with the lines you’ve cleared.

Another practical approach is to listen carefully. You can typically hear a definite change in the noise your compressor makes when a line gets fully cleared out. It gets louder and higher-pitched. This auditory alert makes determining which lines have been cleared straightforward.

By adopting these strategies, you’ll navigate the pool winterization process, tackling common issues you may encounter along the way.


So, you’ve got the know-how to properly blow out your inground pool lines. You’ve learned the steps, discovered how to dodge common pitfalls, and even picked up some troubleshooting tips. Remember, it’s all about preventing water buildup and potential pipe damage. With a little patience and the right tools, you’re more than capable of getting your pool ready for winter. Don’t let clogs deter you – low-pressure air flow and specialized tools are your allies. It’s time to safeguard your pool structure and ensure it’s in top shape for the seasons to come. Armed with this knowledge, you’re set to take on the task with confidence. Here’s to a well-maintained, winter-ready pool!

To efficiently blow out inground pool lines, begin by lowering the water level in your pool to 4-12 inches below the skimmer, depending on your pool cover type. Once the water level is set, use an air compressor or a specialized pool line blower, like the Cyclone, to push air through the pool’s plumbing. This process should start at the skimmer and move through the main drain, ensuring all water is expelled to prevent freezing damage during winter, according to In The Swim. For detailed steps, you can refer to Swimming Pool Steve.

Frequently Asked Questions

Why is it important to prepare inground pool lines for winter?

Preparing inground pool lines for winter is crucial to prevent potential damage. It helps avoid water accumulation, which can freeze and damage the pipes.

What is the process for winterizing pool lines?

The article provides a step-by-step guide for winterizing pool lines. This process involves blowing out the pipes to clear all water and prevent any potential buildup or freezing.

What common mistakes should be avoided during the blowout process?

Common mistakes during the blowout process include dealing with clogs incorrectly and not ensuring all lines are cleared, which may cause damage to the pipe system.

How can clogs be handled during the line blowout process?

Strategies for handling clogs during the line blowout process include using low-pressure air flow and specialized tools if needed.

Why is it essential to clear all pool lines?

Clearing all pool lines is vital to prevent water from accumulating and causing potential damage to the structure. Uncleared water can freeze, expand, and damage the lines.