What a professional pool closing includes
A pool closing (winterization) reverses the opening: water balanced for winter, lines blown out and plugged so they can't freeze and crack, equipment drained and shut down, and the winter cover secured. In the GTA market, professional closings typically run in the $400–$650 + HST range depending on pool size and cover type, itemized in writing before we start.
The math is simple: a frozen plumbing line or a cracked pipe costs far more to repair than the closing service costs. In the GTA, close between mid-September and mid-October, before overnight temperatures sit below 10°C.
How your closing visit works
Balance for winter
Water tested and winter chemicals added so the water that sits all winter doesn't eat the liner.
Blow out the lines
Plumbing lines cleared with air and plugged. This is the step that prevents freeze damage, and the step DIY closings most often get wrong.
Drain & protect equipment
Pump, filter, and heater drained and shut down properly.
Lower & set
Water set to the right winter level for your pool type.
Cover & check
Winter cover installed and secured; liner and track get a last look so spring doesn't surprise you.
Winter is hard on vinyl
Most liner failures we replace show up in spring, but they happen in winter. Water that freezes in the bead track makes liners slip; unbalanced winter water fades patterns and turns vinyl brittle. A liner-specialist closing is about making sure the most expensive surface in your pool comes through the freeze.
Pool closing questions
When should I close my pool in Ontario?
Mid-September to mid-October for most GTA pools, once the swimming is done but before consistent single-digit nights. Closing too late risks the freeze; closing very early means warmer water sitting under the cover, which feeds algae.
How much does pool closing cost in Toronto?
GTA market pricing typically falls between $400 and $650 + HST depending on pool size and cover type. Your quote is itemized: no quiet add-ons.
Can I close the pool myself?
You can, but the risk is in the line blow-out. If lines aren't fully cleared and plugged, freeze damage can crack pipes and fittings, and that repair costs multiples of a professional closing. If you DIY everything else, the blow-out is the step worth paying for.
Does a closing include taking care of the liner?
Ours does: winter water balance and a liner/track check are part of every closing. It's the difference between opening to a pool and opening to a problem.