The Essential Guide to Pool Winterization for Commercial Outdoor Pools in the Mid-Atlantic Region

As the swimming season winds down and cooler weather approaches in the Mid-Atlantic region, it's crucial for commercial pool owners and managers to prepare their outdoor pools for the winter months. Proper winterization not only protects the pool from the harsh winter elements but also ensures an easier reopening when spring arrives. In this guide, we'll walk you through the key steps for winterizing a commercial outdoor pool in the Mid-Atlantic region, where temperatures can fluctuate and winters bring a mix of snow, freezing rain, and frigid winds.

Why Winterization Matters

Winterizing a commercial pool is more than just a seasonal chore—it's a vital step to prevent costly damage from freezing temperatures, snow, and ice. The Mid-Atlantic region, known for its unpredictable winter weather, can expose pools to freezing conditions that cause pipes, pumps, and equipment to crack or burst if not properly protected. Proper winterization ensures:

• Preventing freeze damage: Water expands when it freezes, which can cause pipes, filters, pumps, and pool surfaces to crack.
• Reducing debris build-up: Proper pool coverings prevent leaves, dirt, and other debris from entering the pool during the off-season.
• Maintaining water quality: A properly balanced pool with the right winter chemicals can prevent algae growth and scaling, ensuring a cleaner pool come spring.
• Protecting pool equipment: Storing equipment correctly and insulating pipes can extend the life of your pool systems.

Step 1: Balance the Water Chemistry

Before closing your pool, it's essential to adjust and balance the water chemistry to prevent corrosion, scaling, and algae growth over the winter months. Make sure the water’s pH, total alkalinity, and calcium hardness are within the proper range.

• pH: 7.4 - 7.6
• Total Alkalinity: 80 - 120 ppm
• Calcium Hardness: 200 - 400 ppm
• Chlorine: 1 - 3 ppm (to prevent algae)

Step 2: Lower the Water Level

In the Mid-Atlantic region, where freezing temperatures are common, it's crucial to lower the water level to prevent expansion from freezing water. Typically, you'll want to reduce the water level to just below the skimmer, ensuring that water doesn't enter the skimmer or plumbing system, which could lead to cracks.

Step 3: Drain and Blow Out Pool Equipment

Pool equipment like pumps, heaters, filters, and plumbing systems are vulnerable to freezing temperatures. It’s vital to drain all water from this equipment to avoid cracking or bursting during the winter.

• Drain the pump: Open the pump and drain any water from it.
• Filter system: Backwash the filter and drain the water from it.
• Blow out the lines: Use a pool blower or shop vac to blow out all water from the plumbing lines.

Step 4: Store Pool Accessories and Equipment

Remove any pool accessories such as ladders, handrails, diving boards, and pool lights. Clean and store these items in a dry, protected place to prevent damage from the cold.

Step 5: Cover the Pool

A good quality winter pool cover will keep debris out, block sunlight, and protect the pool from heavy snow and ice accumulation.

Step 6: Winterize the Pool House and Surrounding Area

Don’t forget about the pool house and surrounding areas when winterizing your commercial pool. Secure or store away all pool furniture, safety equipment, and poolside accessories.

Conclusion

Winterizing a commercial outdoor pool in the Mid-Atlantic region is a vital process to protect your investment and ensure a smooth opening next spring.