Two days a year do more for your above-ground pool than anything else you do to it: a clean spring opening and a careful fall closing. Get those two right and the months between are easy — clear water, a happy pump, and a liner and frame that last for years. Rush them or skip steps, and you end up chasing algae all summer or replacing frozen equipment every spring. Whether you're running a Doughboy Bay Burst or another above-ground pool, the same core seasonal steps apply; if you're still choosing a pool, start with our above-ground pool buying guide.
Spring: opening your above-ground pool
Work through these steps in order, ideally on a day when you have a few hours free and the forecast has settled into a stretch of warm weather.
- Pump off cover water and remove the cover. Use a cover pump or wet/dry vacuum to clear standing water and debris off the top before you pull it, so leaves and winter grime don't end up in the pool.
- Clean and store the cover. Hose it down, let it dry completely, and fold it away somewhere dry rather than storing it damp, where it can mildew before fall.
- Top off the water. Fill the pool back up to its normal operating level, roughly mid-skimmer, with a garden hose.
- Reinstall and prime the pump and filter. Reconnect any hoses or unions you disconnected at closing, open the air relief valve, and prime the pump so it isn't running dry when you start it.
- Remove the winter plugs. Take the winterizing plugs out of the skimmer and return fittings so water flows through the lines normally again.
- Test and balance the water. Check pH, total alkalinity, and calcium hardness first and adjust them before worrying about chlorine — balanced water lets sanitizer do its job.
- Shock the pool. An opening shock treatment burns off whatever built up under the cover over winter and gets you back to a clean chlorine residual.
- Run the filter until the water is clear. Expect to run it around the clock for a day or two after a winter closing; cloudy opening water is normal and clears with continuous filtration.
- Vacuum and brush. Once the water clears, vacuum the floor and brush the walls to clear off fine debris or early algae film before anyone swims.
Summer: keeping it easy
Once the pool is open and clear, summer care is mostly maintenance: test the water two to three times a week, keep chlorine and pH in range, run the filter long enough each day for a full turnover, and skim and brush on a regular schedule. A little routine upkeep each week is far less work than recovering from cloudy or green water later. For sanitizer options, testing routines, and target chemistry ranges, see our full above-ground pool water care guide.
Fall: closing and winterizing
Close on a cooling trend, before nighttime temperatures are routinely dropping near or below freezing in your area, and work through these steps.
- Deep clean and balance the water. Vacuum, brush, and skim thoroughly, then test and adjust pH, alkalinity, and calcium hardness so the water sits in balanced range all winter instead of scaling or etching the liner.
- Add winter chemicals and a closing shock. A winterizing chemical kit paired with a shock treatment gets ahead of algae and keeps the water from turning into a swamp under the cover.
- Lower the water below the skimmer and return. Drain water down with a submersible pump until the level sits below the skimmer and return fittings — enough to keep ice from cracking them, without emptying the pool.
- Drain, then remove and store the pump and filter. Disconnect the equipment, drain it fully, and move it indoors for winter rather than leaving it outside exposed to freezing temperatures.
- Blow out or plug the lines. Use a shop vac to blow remaining water out of the skimmer and return lines, then plug them with winterizing plugs so nothing is left inside to freeze and expand.
- Add an air pillow. Partially inflate an air pillow and float it in the center of the pool, under where the cover will sit.
- Put on the winter cover. Center it, secure it with a cable-and-winch or the manufacturer's fastening system, and check that it's snug enough not to sag and collect water.
Freeze protection for above-ground plumbing
Most winter damage to above-ground pool equipment comes down to one thing: water left where it shouldn't be. Water expands as it freezes, and there's enough force in that expansion to crack a pump housing, split a filter tank, or split a length of hose that looked empty but wasn't. The goal at closing is simple: get every drop of water out of the pump, filter, and hoses, not just most of it.
Drain the pump and filter completely, remove any drain plugs so trapped water can escape, and blow out the lines with a shop vac until air passes through clean and dry. Store the pump indoors, in a basement, garage, or shed, rather than leaving it connected outside for winter; keeping it dry and out of the cold meaningfully extends its working life. See our pump and filter guide if you're shopping for a replacement before next season. A cartridge or DE filter should be opened, rinsed, and dried before storage too. Even a small amount of water left pooled in a housing or a low point in a hose is enough to crack it over the winter, turning a five-minute closing step into a spring repair bill.
Choosing a winter cover
A winter cover's job is to keep sunlight, debris, and animals out of the pool for months at a time, and the two main types trade off differently.
| Cover type | Best for | Trade-off |
|---|---|---|
| Solid | Blocking all sunlight and debris, which minimizes algae growth | Rain and melting snow sit on top and need to be pumped off |
| Mesh | Letting rain and melting snow drain through on their own | Fine silt and some light pass through, so opening takes a bit more cleaning |
Whichever type you choose, fit matters as much as material. A cover sized to your exact pool diameter or dimensions, secured with a cable-and-winch system around the top rail, stays tight through wind and snow load instead of sagging into the water. Browse winter and safety pool covers sized for round and oval above-ground pools. A loose or undersized cover collects standing water in the middle, which adds weight and eventually works its way in around the edges.
The air pillow underneath does a specific job: as ice forms across the pool's surface, the pillow gives that ice somewhere to expand into instead of pushing outward against the pool wall. That's worth not skipping on any above-ground pool. If you have a Bay Burst Hybrid, the coated steel uprights are protected but still benefit from a dry, low-stress winter under a snug cover; an all-resin Bay Burst Resin frame has no metal to worry about, but the pillow is still what keeps expanding ice off the wall itself.
Frequently Asked Questions
Should I drain my above-ground pool for the winter?
No — never fully drain an above-ground pool. Lower the water below the skimmer and return fittings so the equipment and fittings won't freeze, but leave the bulk of the water in place. The water's weight helps hold the wall in position against the soil and backfill pressure around the outside of the pool, and an empty wall can shift, buckle, or collapse over winter.
When should I close my above-ground pool?
Close on a cooling trend, generally once nighttime temperatures in your area are consistently dropping toward freezing, rather than waiting for the first hard freeze to catch you off guard. Closing a little early on balanced, stable water is safer than rushing the job after equipment has already been damaged by an unexpected cold snap.
Do I need an air pillow under the cover?
Yes, in any climate where the pool surface can freeze. The pillow gives forming ice somewhere to expand into instead of pushing directly against the pool wall, which lowers the risk of wall damage over winter. It also helps keep standing water and debris from collecting in the center of the cover.
How do I keep the plumbing from freezing?
Drain the pump and filter completely, blow out the skimmer and return lines with a shop vac, and plug the fittings so no water is trapped inside to expand and crack something. Store the pump indoors for the winter rather than leaving it connected outside. Even a small amount of leftover water in a housing or a low point in a hose can crack it over the winter.
When should I open my pool in spring?
Open once your area has settled into a consistent stretch of warm weather, rather than on the first warm day that might be followed by another freeze. Opening a little early to get ahead of algae is fine, but wait until hard freezes are behind you before draining cover water, pulling winter plugs, and reconnecting equipment.