When it comes to pool care, out of sight should never mean out of mind—especially during the colder months. While it might be tempting to switch everything off and forget about your pool until summer, doing so can lead to costly repairs and hours of hard work to get it swim-ready again.
Why Winter Pool Maintenance Matters
Even if you’re not using your pool in winter, regular maintenance is essential. Dirt, debris, and scum can build up—even with a pool cover in place. Left unchecked, this can lead to algae, bacteria, and a host of issues that are far harder (and more expensive) to deal with come summer.
So, what should you be doing during winter?
1. Clean Your Pool (Yes, Even in Winter!)
Start by switching on your pool cleaner (aka “creepy-crawly”) and giving your pool a good scrub—ideally on a warmer day. Pay special attention to the areas your cleaner might miss, such as:
Scum build-up in these areas can contaminate your water over time, so it’s best to stay on top of it.
2. Check and Service Your Equipment
Make sure all pool equipment is in working order. That includes:
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Cleaning the skimmer basket and lint pot
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Backwashing your filter
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Using a filter cleaner and degreaser
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Lubricating O-rings with a silicone-based lubricant
If you notice poor water flow back into the pool, it might be time to call in a professional for a check-up.
3. Shock the Pool
Even in winter, your pool will benefit from a good shock treatment at least once. This means adding a high dose of chemicals to kill off bacteria and contaminants. Be sure to run the pump afterward to circulate the chemicals evenly.
4. Cover Up and Conserve
If you haven’t already, invest in a quality pool cover or blanket. Not only will it keep leaves and debris out, but it can also reduce energy costs by up to 80%. In summer, it’ll help retain heat overnight, keeping your water warmer for longer.
5. Balance Your Water Chemistry
Every few weeks, check the chlorine and pH levels—aim for a pH between 7.2 and 7.6. This keeps the water clean, safe, and crystal clear. Leaving your pool untreated can lead to cloudy water, algae growth, and a green swamp-like appearance.
If your pool turns cloudy, that’s a sign the pH may be off. To correct:
Always mix chemicals in a bucket of water first, and add slowly. It’s easier to add more than it is to fix an overdose.
6. Weekly and Monthly Winter Checklist
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Run the filter for a few hours each week to keep water circulating.
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Empty the skimmer basket regularly to maintain proper filtration.
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Switch on pool lights for 30 minutes weekly to prevent moisture build-up in fittings and wiring.
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Check water level—it should sit halfway up the skimmer box opening.
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Monitor the pressure gauge—if it indicates “backwash,” it’s time to act.
Get Ahead for Summer
Winter pool maintenance might not be the most glamorous task, but a little effort now will save you time, money, and stress when the weather warms up. Follow these tips, and you’ll be diving in on the first sunny day without a hitch!