Freeze damage is one of the most expensive pool problems, and it is almost always preventable. Water left in pipes and equipment expands as it freezes, which can crack pumps, filters, heaters and underground lines. Use this checklist to close your pool safely.
A few days before closing
- Test and balance the water. Balanced water is less likely to stain or scale over the winter.
- Clean the pool and run the filter. Poolmaster asks for the water to be tested and the pool cleaned 48 hours before a closing visit.
- Remove toys, floats and automatic cleaners.
- Have your winter cover, plugs and water bags ready.
Closing day
- Vacuum any remaining debris.
- Add winter chemicals: shock and algaecide.
- Lower the water level below the skimmer and return lines, as recommended for your pool and cover type.
- Blow out the lines with a blower until no water remains, then plug the skimmer and returns.
- Remove jets and lights from their niches where your pool requires it.
- Drain the pump, filter and heater. Remove the drain plugs and store them somewhere you will find them in spring.
- Remove deck equipment such as ladders and handrails.
- Install the winter cover and secure it with water bags or anchors.
Common mistakes
- Missing a line during blow-out, often the main drain or a spa line.
- Leaving the heater full of water.
- Closing too early in warm water, which can mean an algae-filled spring opening.
- Using a solid tarp cover where children or pets are present. A mesh safety cover is designed to keep them out.
Professional closing
Poolmaster’s complete winterizing service covers every step above. Shock and algaecide are included, and plugs, parts and water tubes are invoiced separately if needed.
Book your pool closing. Request a quote or call 416-449-1450.
