The best approach to prevent freeze damage is to keep your pool warm. You should be fine as long as you can maintain your pool water temperature at or above 32 degrees. If you cannot do this because of a lack of equipment or heating capacity, please refer to the steps from New York Garden below.

Should you leave your pool open in the winter?

There are some pros and cons to leaving your pool open all year.

PROS:

1. By skipping winterizing, you’ll save time and money

In addition to the time it takes to close, winterize, and install everything, closing your pool for the winter entails buying a lot of supplies including winter coverings, safety covers, winter chemicals, and water weights.

2. In the spring, you don’t need to clean or reopen your pool

By keeping your pool open all year round, you can avoid paying for costly pool opening chemicals and treatments as well as the algae blooms that many pool owners see when they first open their pools in the spring.

3. In the winter, pools are simpler to maintain

Temperatures below 16 degrees Celsius or 60 degrees Fahrenheit make it difficult for algae to thrive. Therefore, you’ll use less chlorine or sanitizer if you leave your pool open over the winter. Additionally, less organic waste will enter your water throughout the winter once all the leaves have fallen. Your sanitizer will have to do less work as a result. You won’t waste as much water and chemicals to evaporation because it’s cooler outside.

CONS:

1. Your utility costs have increased

Utilities like gas and electricity typically cost higher during the winter. Therefore, running your heater or pump continuously will cost you more money.

2. Pool heat pumps and salt chlorine generators perform poorly in the cold

When the temperature outside dips below 50 degrees Fahrenheit, heat pumps stop functioning properly, and salt chlorinators stop producing chlorine when your water temperature falls below 60 degrees Fahrenheit. This means that during the cooler months, you’ll need to utilize a different sanitizing technique, such as a chlorine floater.

3. An ice dam could harm your equipment

When temperatures are approaching freezing, you must keep your water flowing consistently. However, if a power loss causes your pump to inadvertently shut off, your plumbing and pull equipment may suffer severe damage.

How to keep your pools from freezing

1. Keep every valve open

To keep your water flowing smoothly through your plumbing, you need to maintain your pool valves at least half open. Water that isn’t moving causes freezing and equipment damage.

2. Run the pumps continuously

To keep your water from freezing throughout the winter, you need to keep it moving. Keep your pump running when the temperature begins to fall below 40 degrees Fahrenheit or four degrees Celsius. If all of the pumps are working and all the valves are half open, the water in your pipes won’t freeze even if the surface of your pool freezes.

3. Keep the water warm, especially in frigid locations

Running your pump won’t be sufficient if you live in a region where temperatures dip and remain well below freezing. You’ll need a pool heater to maintain the water in your pool at or above 40 degrees Fahrenheit and stop your plumbing from freezing.

Using a pool cover will help your water retain heat no matter where you live. Additionally, in a warmer climate, add a sun cover to help retain heat if you occasionally use your pool in the winter.

4. Add a freeze sensor

Use a freeze sensor if you don’t want to keep your pool pump running constantly.

When temperatures dip too low, your pump will switch on thanks to these sensors, which also monitor water and/or air temperatures. In fact, some more recent pump types have freeze prevention controls built right in.

5. Winterize your water features

Consider winterizing, closing the valves, and turning off any fountains, waterfalls, or deck jets in your pool to lower the chance of freezing damage.

6. Clean up the pool

After the leaves have fallen, it is much easier to maintain a pool, but regular cleaning is still necessary, especially if your pool is left uncovered.

If leaves are dropping, skim your water more frequently or at least twice a week. At least once a week, vacuum, and once a week, brush the walls. If your pool is frequently covered with leaves, you might want to think about investing in an automatic pool cleaner that is designed to remove them.

7. Maintain water balance

Even though you might require less chlorine in the winter, you still want to maintain appropriate water chemistry to protect your pool’s surfaces and equipment.

Verify that the pH, alkalinity, calcium utilization, and cyanotic acid levels are within the recommended values. While your pool is open, test and adjust the pH and total alkalinity at least once weekly. Your total alkalinity should be between 100 and 150 ppm, and your pH should be between 7.4 and 7.6.

Additionally, you should check and adjust the calcium levels in your harness. For vinyl-lined pools, these should be between 175 and 225 parts per million, whereas for plaster or concrete pools, they should be between 200 and 275 parts per million. Between 30 and 50 parts per million should be considered normal amounts of cyanuric acid, or CYA.

You could want to increase your chlorine levels to three parts per million or start shocking your pool once a week whenever the temperature rises to 60 degrees Fahrenheit or higher.

FAQs

1. Does operating your pool during the day or at night make more sense?

Sunlight’s UV quickly annihilates chlorine. You might not be able to build up an efficient chlorine level and run into algae issues if you only run your pool during the day. Due to this, even if you have solar panels, we advise operating the pool overnight for a few hours.

2. Can my pool be covered while the pump is still running?

Absolutely! A cover has no effect on how the water flows through your system. It doesn’t come in contact with your pump or any other equipment you may have. You can use your pool less when it’s covered during the winter months, preventing the pump from aging too soon.

3. How long should my pool cleaner run each day?

Running your pump for eight hours daily is the general norm for pool care.