As the warm days fade and the crisp autumn breeze settles in, it’s easy to let your pool slip from mind. But a neglected in-ground pool in winter can turn into a costly headache come spring. Freezing temperatures, ice expansion, and accumulated debris can wreak havoc on your investment.
Winterizing your pool ensures that when summer returns, your retreat is ready to welcome the season without unwelcome surprises or costly repairs. Think of it as tucking your pool in for a cozy, protective slumber.
In this guide, we’ll walk you through how to winterize your pool with a step-by-step approach, expert pro tips, and answers to frequently asked questions. Whether your pool is a sparkling centerpiece or shares the spotlight with a luxurious spa, this guide will help you make a smooth transition from swim season to winter dormancy.
Why Winterizing Your Pool Matters
Skipping winter maintenance may seem harmless, but the risks quickly add up. In-ground pools that are left unprotected can suffer from frozen pipes, cracked plaster, rampant algae growth, and debris accumulation. The result? A headache in spring and potentially expensive repairs.
Winterizing safeguards not just the pool itself but the value of your investment. A properly winterized pool:
- Prevents freeze-related damage to plumbing and equipment
- Keeps leaves, dirt, and debris from contaminating water
- Reduces algae and bacterial growth
- Ensures a seamless and swift return to sparkling waters come spring
Investing the time now saves money, stress, and effort when warm weather returns.
Step-by-Step Guide to Winterizing Your In-Ground Pool
Follow these steps to protect your pool through the off-season.
Step 1: Balance the Water
Balanced water chemistry lays the groundwork for a protected pool. Test the pH, alkalinity, and calcium hardness, adjusting as needed to avoid corrosion or scaling.
Once balanced, shock the pool with high-quality pool shock and add algaecide. This ensures your water stays crystal clear and bacteria-free while your pool rests.
Pro tip: Begin once water temperatures settle below 65°F—early preparation allows for precise balancing before the first frost.
Step 2: Lower the Water Level
Drain the water below the skimmer and return lines. If your pool connects to a spa, lower the water in both to protect all plumbing components. This step prevents damage caused by freezing water and ice expansion.
Pro tip: Avoid lowering the water too much. The water should still cover the main drains. This helps prevent damage to pool walls while ensuring plumbing lines are safe.
Step 3: Turn Off System Components and Protect Equipment
Turn off pumps, filters, and heaters, then drain all water from these systems. Remove and store ladders, skimmer baskets, and cleaning tools. Meticulous preparation of your equipment wards off winter-induced damage and prolongs its life.
Pro tip: Store removable gear in a dry, sheltered location. Ladders, pool toys, and steps can warp or crack if left exposed to winter elements.
Step 4: Plug the Lines
Insert winterizing or expansion plugs into all plumbing lines to block water from entering. In colder climates, consider adding pool-safe antifreeze to the lines for extra protection.
For spas, the process is a bit more involved. Spas have multiple jets and smaller lines, which must be blown out using a shop vac or air compressor. If you skip this step, add pool-safe antifreeze to prevent freeze damage.
Pro tip: Double-check that all plugs are snug and secure. Even a small leak can freeze and crack pipes during winter.
Step 5: Clean and Cover
A thorough cleaning is crucial before covering. Vacuum the pool, brush walls and steps, and skim any remaining debris. Then, install a durable, secure cover designed for winter protection. A proper cover prevents debris accumulation, ice damage, and unwanted wildlife intrusion.
Looking for assistance in cleaning your pool? Coastal Pools offers pool cleaning services in Maryland and Delaware.
Pro tip: Consider adding winter algaecide or clarifier just before covering to keep water pristine and reduce cleanup in spring.
Step 6: Monitor and Maintain Throughout Winter
Even after you close your in-ground pool, periodic checks can prevent small issues from becoming costly problems. Inspect the cover for tears or accumulated snow or ice, ensure the plugs remain secure, and make sure the water level hasn’t shifted significantly. A monthly quick check helps you catch potential problems early, protecting your investment.
Pro tip: After heavy snow or storms, gently remove excess weight from your cover to avoid stretching or tearing. If you notice debris or standing water, carefully clear it away to maintain the integrity of your cover.
Winter-Proof Your Pool Stress-Free with Coastal Pools
Closing and winterizing your pool is an essential step in keeping your backyard oasis beautiful to enjoy during the warmer months. By balancing water, lowering levels, protecting equipment, and installing a secure cover, you ensure that your in-ground pool remains pristine throughout the off-season.
You don’t have to wrestle with chemicals, plugs, and covers on your own. Our team winterizes pools across Maryland and Delaware, from coastal properties in Rehoboth to suburban backyards in Annapolis and Easton. These regions require attention to local climate factors, ensuring your pool remains protected throughout the colder months.
Preserve both your pool and your peace of mind—entrust your winterization to the seasoned professionals at Coastal Pools.
Call us at 410-827-0888 or request a quote online.
Frequently Asked Questions
Do I really need antifreeze for my pool’s plumbing?
If you live in a region with mild winters, plugs may be enough. In colder climates, antifreeze adds an extra layer of protection against frozen plumbing. Always use pool-safe products designed for winterizing.
Can I use a tarp instead of a pool cover?
Tarps are a temporary solution at best. A high-quality cover provides proper tension, debris protection, and safety.
When should I start winterizing my in-ground pool?
The best time to start winterizing your pool is when your local temperatures consistently dip below 65°F, typically in late fall. Early preparation prevents damage and gives you time to complete all the steps methodically.
