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Pool Opening and Closing in Seattle, WA

Seasonal pool care done right. We open your pool for summer and close it tight for the Northwest winter.

Pool opening and closing service by ASA Pools and Spas in Seattle
5.0Star rated on Google across the Seattle area
Seasonal Pool Service

Open clean in spring. Close safe in fall.

In Western Washington the swim season is short and the wet season is long. Opening and closing your pool correctly is the single best way to protect your equipment and start each summer with clear water instead of a green surprise.

In spring we remove and clean the cover, refill, inspect the equipment, balance the chemistry and start everything up. In fall we blow out the lines, add winter chemicals, protect the equipment from freezing and secure the cover for the season. Serving Seattle, Bellevue, Kirkland and all surrounding cities.

  • Complete spring opening and startup
  • Winterization that prevents freeze damage
  • Equipment inspection at every open and close
  • Water balanced and swim ready
Timing matters

Why seasonal service pays for itself.

When to Open

Most Seattle pools open between late April and Memorial Day. Opening early beats fighting algae that grew under a warm spring cover.

Why Closing Matters

Freeze damage to pumps, heaters and plumbing is the most expensive repair we see. A proper closing prevents it entirely.

Covers and Care

We inspect and secure your cover at closing and clean it at opening, so it protects the pool instead of feeding it debris.

Questions, answered

Pool opening and closing FAQs.

When should I open my pool in Seattle?

Most Seattle area pools open between late April and Memorial Day. Opening a little early is cheaper than fighting the algae that grows under a warming cover in spring.

When should I close my pool in Washington?

We recommend closing between late September and mid October, before the first freeze. Closing too late risks freeze damage to your pump, heater and plumbing.

What is included in a pool closing?

We balance the water, lower the level, blow out and plug the plumbing lines, add winterizing chemicals, drain the equipment and secure the cover so your pool sleeps safely through winter.

Can you open a pool that was not closed properly?

Yes. If your pool turned green over the winter or equipment was left unprotected, we handle the cleanup, repairs and startup to get it swim ready again.

What is included in a pool opening?

A full pool opening includes removing and cleaning the cover, reconnecting and inspecting the pump, filter and heater, restoring the water level, cleaning the pool and balancing the chemistry. We start the system, check for leaks and leave the water clear and swim ready.

Should I shock my pool before closing it?

Yes. Shocking before closing kills algae and bacteria so they cannot multiply under the cover all winter. Our pool closing service includes winterizing chemicals dosed for the months your pool will sleep, so it opens clear in spring.

Beat the season

Get on the seasonal schedule before it fills up.

Free quotes, fast answers, and a real person on the other end.

Book an opening or closing