Can I drain my pool for the winter?

Author: Laney Boyle DVM  |  Last update: Monday, September 18, 2023

By draining water from pipes, filters and pumps, the risk of damage from freezing is eliminated. Water left in the pool helps protect the liner and the structure from cold weather damage. A properly winterized pool won't harbor algae and bacteria that can be difficult to deal with next year.

Is it a good idea to drain your pool in the winter?

The reason you don't want to completely drain your pool during winter is because the dry, freezing air can cause rips, cracks and tears in your liner. By allowing pool water to cover the liner, you're preventing the liner from drying up and getting damaged.

How far down should I drain my pool for winter?

Never lower the water level more than 18″, doing so can increase stress on your safety cover and cause the cover to rip or pull the anchors out of your deck. If you are using a solid winter pool cover, lower the water level 3–4″ below the bottom of the skimmer opening, unless you're using a skimmer plug.

Is it OK to drain an above ground pool for winter?

Be wary of draining your above-ground pool for the winter; the cold weather can shrink the liner even more and make it more brittle. To go easy on your pool's liner, begin refilling the pool as soon as possible after you've done whatever maintenance you need to do.

How do you winterize a pool after draining?

Steps for Winterizing an In-Ground Pool
  1. Step 1: Remove pool accessories. ...
  2. Step 2: Deep clean the pool. ...
  3. Step 3: Adjust the water chemistry. ...
  4. Step 4: Lower the water level. ...
  5. Step 5: Drain and store the equipment. ...
  6. Step 6: Add shock and algaecide. ...
  7. Step 7: Cover the pool.

Do You Need To Lower Pool Water Level For Winterizing?

Does draining a pool damage it?

Timeframe – Never keep your pool drained for more than a day or two. This can cause the ground surrounding your pool's foundation to shift and change, which can cause extensive damage to your pool and the area around it.

Do you put chemicals in a pool to winterize it?

Use the same winterizing chemical steps as you would use on any inground pool, including shocking the pool and adding algaecide and stain and scale preventers. You can even buy winter pool kits that include all the chemicals you need in a convenient package.

How much water do you drain from an above-ground pool for winter?

In general, it is not recommended to fully drain the pool during the winter. Therefore, it is necessary to lower the water level at the close at a certain level. This depends on the type of pool. For above-ground pool, it is best to lower the water up to 18'' below the skimmer.

What chemicals do I need to winterize my above-ground pool?

Gather Your Pool Closing Essentials

Winterizing chemical kit or pH increaser, Alkalinity increaser, Calcium hardness increaser, Pool shock, and Algaecide. Clarifying enzyme supplement (optional, but recommended) Above ground pool skimmer cover. Expansion plugs.

How do I winterize my pool?

Follow these steps to winterize most in-ground pools, adjusting them as needed to fit your specific pool and equipment.
  1. Remove and Store Accessories. ...
  2. Thoroughly Clean Pool and Filter. ...
  3. Test and Balance Water Chemistry. ...
  4. Add Shock and Algaecide. ...
  5. Partially Drain Pool. ...
  6. Blow out Lines. ...
  7. Fill Lines With Pool Antifreeze (Optional)

What happens if you leave a pool uncovered in winter?

Rain and snow will enter your pool without a winter swimming pool cover, damaging the water and chemicals, like pH, Total Alkalinity and Calcium Hardness. In addition, be sure that your Cyanuric Acid level is up to 50 ppm, to protect your chlorine from the sun.

How do I prepare my pool for winter?

Closing a Pool for the Winter: 10 Steps to Getting the Job Done
  1. STEP 1: Clear the pool of debris and pool scum. ...
  2. STEP 2: Test and balance the pool water. ...
  3. STEP 3: Add winterizing pool additives and chemicals. ...
  4. STEP 4: Shock and chlorinate your pool. ...
  5. STEP 5: Lower the pool's water level.

At what point should you drain your pool?

If the level of groundwater is high (which, in some cases, can be all the time. In other cases, this could be only after heavy rainfall), the pressure can cause the pool to heave out of the ground. On average, a pool should be drained and refilled once every three to five years unless there is an emergency.

How do you winterize a 10000 gallon above ground pool?

Unhook the filter hoses, and store all pool supplies indoors for the winter. Add 1 gallon of shock per 10,000 gallons of pool water and 1 gallon of Winterizing Pool Chemical Agent per 15,000 gallons of pool water. Spread swimming pool covers for above ground pools over pool and secure cable around the perimeter.

Do you cover the skimmer with winter cover?

Thus, it's essential to protect your skimmer over the winter by preventing water and moisture in general from entering the skimmer - it's a necessary step in winterizing your swimming pool.

How do I keep my above ground pool from freezing in the winter?

Tips for Winterizing an Above-Ground Pool

Always use a pool cover designed for the size and shape of your pool. If the pool has many deciduous trees above it, use a leaf net on top of the pool cover. Don't skip the air pillows/supports for the cover. These unlock the cover from the water in the event of freezing.

How much algaecide do I put in my pool for winter?

When closing and winterizing your pool, it is important to remember to balance your pool water's chemistry prior to closing and don't forget the algaecide. Algaecide is simple and effective, with one quart of winter algaecide typically enough to treat 20,000 gallons of water all winter long.

Do you winterize a pool with antifreeze?

The antifreeze works best to winterize your pool skimmer line and return line. The water in your main drain line is still free to move, being connected to the water in the bottom of your swimming pool, so antifreeze added here will simply keep diluting further.

Should I put chlorine in my pool during the winter?

Inground Pool Winter Tips and Guidelines

Mesh Safety Cover – If you have a mesh safety cover and a chlorine pool, you'll want to add 2 gallons of liquid chlorine to your pool water every 2 weeks starting 3-4 weeks after we close your pool and until outside temperatures get consistently colder.

Is it safe to drain pool water on the lawn?

To avoid issues such as flooding and drowning the roots of your grass, and causing root rot, pools should ideally not be emptied onto flat ground where there is nowhere for the water to drain.

Why pools should not be drained?

“Water acts as a stabiliser that weighs the pool down when it's in the ground, so when you take that water out, it could 'pop' out of the ground or cause the walls to cave in,” explains Swimart Regional Franchise Manager, Peter Allen.

Why you shouldn't drain your pool?

Keeping water in the pool helps to prevent the liner from drying out, shrinking and cracking. An empty pool is far more prone to liner wear and damage. Additionally, even with a cover, an empty pool is more at risk for damage from debris.

What temperature should I cover my pool for winter?

Plan on closing a pool for the winter once the temperature is regularly 65 degrees Fahrenheit or lower. You may not be using the pool at this point, but if you close it while temperatures are still warm, you risk allowing algae to grow in the closed pool, creating more work for yourself in the spring.

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