Should I Drain My Pool For The Winter?

When It Makes Sense

• Good fit: You live in a region where temperatures regularly drop below freezing for several weeks and you have a vinyl or fiberglass pool that is prone to cracking when water expands.
• Good fit: Your pool has outdated or delicate equipment (such as an older pump or heater) that the manufacturer recommends draining to avoid freeze‑damage.

When You Should Avoid It

• Warning sign: You own a concrete gunite pool; draining can lead to structural stress, cracks, or loss of plaster if not refilled and re‑pressurized correctly.

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• Warning sign: Your local climate experiences only occasional frost and you have a reliable pool cover; draining may be unnecessary work and could expose the surface to wind‑driven debris.

Pros and Cons

Pros

• Eliminates the risk of water freezing inside plumbing, which can burst pipes and cause expensive repairs.
• Provides an opportunity to clean the shell thoroughly, inspect for cracks, and address any needed repairs before the next swim season.

Cons

• Draining and later refilling a full‑size pool consumes a large amount of water and can increase utility costs.
• If not performed correctly, a partially drained pool can develop structural issues, and the process may require professional help.

Decision Checklist

• Do I live in an area where prolonged sub‑freezing temperatures are common?
• Is my pool type (vinyl, fiberglass, gunite) recommended for winter draining by the manufacturer?
• Do I have the resources (time, equipment, water access) to drain, clean, and later refill safely?

Alternatives to Consider

Instead of a full drain, you can use a high‑quality winter pool cover, add antifreeze‑type pool water additives, or employ a low‑level water line that keeps the plumbing from freezing. Some owners choose to keep the water level just below the skimmer and circulate it with a winter‑timer pump to prevent stagnation.

Final Recommendation

If you have a vinyl or fiberglass pool in a region with hard freezes and your equipment manufacturer advises it, draining for winter is a prudent choice—provided you follow proper procedures or hire a professional. In milder climates or with concrete pools, using a cover and circulation system is usually safer and more cost‑effective. Always consult a certified pool contractor or local building authority when unsure about structural implications or local regulations.