Is it OK to leave a pool uncovered in winter?

Author: Willis Tillman MD  |  Last update: Monday, March 21, 2022

People often avoid covering their pool for the winter because pool covers are an additional cost. However, an uncovered pool will cost you far more over the span of a few short years than a simple pool cover. For one thing, an uncovered pool will become a catch-all for leaves and debris.

What happens if you don't cover your above-ground pool for winter?

If you don't cover your above-ground pool, it's going to get dirt, leaves, and other debris in it. Even if you don't have any trees nearby, the wind will still blow debris into the water.

Is it better to keep a pool covered or uncovered?

Covering a pool when it is not in use is the single most effective means of reducing pool heating costs. Savings of 50%–70% are possible. Pool covers on indoor pools not only can reduce evaporation but also the need to ventilate indoor air and replace it with unconditioned outdoor air.

What happens if you don't close a pool for winter?

The harsh weather conditions throughout the winter season can create potential damage to more than just the pipes. What happens when you don't winterize your pool is that the water could turn green with algae. If the chlorine system stops functioning, you'll say adieu to the beautiful blue pool you know and love.

Do swimming pools freeze in the winter?

Yes, they can freeze solid. If temperatures reach below zero, swimming pools that are not circulating can freeze solid within a few days. If those low temperatures continue for several days, the ice sheet can increase in thickness by up to ¼” per day.

How To Keep Your POOL Open All WINTER (Follow These Safety Measures!) | Swim University

What happens when a pool is winterized?

What is Winterizing a Pool? Different from closing a pool, winterizing your pool is the finale to the pool season. This means that your pool will not be used for several months, equipment is turned off, accessories are removed and the water is removed from lines and vessels.

How do you take care of a pool in the winter?

Here are our top 10 winter care tips for your pool:
  1. Prevent the System from Freezing. ...
  2. Dry the Pool Cover. ...
  3. Make Sure the Pool Cover Fits. ...
  4. Add Mid-Winter Algaecide. ...
  5. Reduce the Water Level. ...
  6. Adding Chemicals. ...
  7. Store Pool Accessories Away. ...
  8. Check the Pool at Regular Intervals.

Does leaving a pool cover on cause algae?

So while a solar cover won't actually 'turn your pool green', it will warm your water by up to 8 degrees, so if the other conditions are right, adding a solar cover can easily accelerate algae growth, very rapidly. You need to get the water balance in your pool right before putting the cover back on.

How do I protect my pool in the winter?

Skim out floating debris and vacuum the pool thoroughly. Add an algaecide to prevent algae from forming before the water has frozen. Follow your pool manufacturer's directions for lowering your water level. Only a few type of pools need to be completely drained during the winter.

Can you leave an above-ground pool up during winter?

A common question asked is, “Can above ground pools stay up year round?” And although the easy answer is that “Yes, they can,” whether you want to leave them up year-round really depends on the type of pool you have. Dismantling some above ground pools for the winter may be more hassle than it's worth.

Is winterizing a pool necessary?

You will want to close your pool properly over the winter to prevent freezes from damaging expensive pool equipment. Surface freezes can also tear through vinyl liners as a result of ice expansion. A second reason to winterize your pool is because most people completely stop maintenance over the winter.

Will an above-ground pool freeze?

Aboveground pool walls are cold, like an ice cube tray, and the ice sheet grows very fast and thick. ... When the water level in the pool drops even an inch, the ice sheet will also drop, and if frozen into the inside of the skimmer, this can be the unfortunate result.

How cold does it have to be for a pool to freeze?

What temperature does a pool freeze? A chlorinated swimming pool freezes at around 32 degrees Fahrenheit, the same temperature as non-chlorinated water.

How long can you leave a pool cover on?

A pool blanket should be used until the nighttime temperatures average at least 60 degrees, typically in early March. But you can leave the cover on for as long as necessary to achieve the desired water temperature.

Why did my pool turn green over winter?

Green discoloration in a swimming pool is caused by the growth of algae, a type of green aquatic plant that floats on the surface of water. Algae usually flourishes in warm water but can still take over your pool in winter if given half a chance.

Should I shock pool in winter?

Shocking the pool during the winter months can certainly help to avoid a green swamp-like pool in the spring. It's often recommended. However, poor water balance or improper application can lead to unintended consequences, such as discoloration and damage to pool surfaces.

How long should I run the pool pump in winter?

Depending on the size of your pool, we still recommend the pump run 8-10 hours per day during the hottest summer months and at least 6 hours per day during the winter months.

Does pool need chlorine in winter?

You do not need as much pool shock during winter as you normally would to achieve the same effect. The National Institutes of Health found that at normal summer water temperatures, the efficacy of chlorine was 2-3 times less than for water temperatures around 50 degrees.

When should you close your pool for the winter?

Most experts recommend waiting at least until temperature drops below 65 degrees Fahrenheit (18 degrees Celsius) to winterize your pool. However, if you can wait longer until your pool is below 50 degrees Fahrenheit (10 degrees Celsius), you will have a much lower risk of problems occurring.

Should I turn my pool pump off in freezing weather?

Run your pool pump continuously when temperatures are near or below freezing. You don't need to run your heater, moving water likely will not freeze. Disconnect any aerators and lines to slides. Booster pumps for pool cleaners don't need to run continuously.

Should you take down an above ground pool in the winter?

Pools very rarely need to be drained completely. If you have a vinyl-lined above-ground pool, leaving it full for the winter will protect the vinyl liner from shrinkage and other damage. Since these pools are above ground level, keeping them full ensures that the wind will not damage the walls, liner, or frame.

Can you leave an Intex pool up over the winter?

In warmer climates, Intex advises to keep your pool up, if you prefer. However, you must winterize the pool when keeping it full throughout the winter. If your area maintains tropical climates all year long, you may not need to winterize your pool at all, especially if you use your pool on a regular basis.

How do I store my Intex pool for the winter?

Store Your Pool at Room Temperature

A large, clean, new trash can placed in the basement or garage may be an ideal location for winter storage. You'll also want to drain the pump and filter and store them indoors or out of the elements.

How many years do Intex pools last?

Intex brand metal frame pools often last up to 7 years.

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