Should I Drain My Pool In The Winter?

When It Makes Sense

• Good fit: You own an above‑ground pool with a durable vinyl liner that can tolerate being emptied without cracking, and you plan to store the pool for three or more months while the ground freezes.
• Good fit: Your pool is located in a region where temperatures regularly drop below freezing for extended periods, and you have a reliable winterizing system but want to protect pumps and filters from ice damage by removing water.

When You Should Avoid It

• Warning sign: You have an in‑ground concrete or gunite pool; draining can cause structural issues such as cracking or shifting due to loss of hydrostatic pressure.
• Warning sign: Local regulations or water-use restrictions prohibit large water discharges, or you lack a proper disposal method for the drained water.

Pros and Cons

Pros

• Reduces the chance of pump, heater, and plumbing damage caused by freezing water.
• Allows you to perform thorough cleaning, inspections, and repairs that are difficult when the pool is full.

Cons

• Emptying a pool can stress the shell or liner, especially for in‑ground pools, potentially leading to cracks or warping.
• Draining uses a large amount of water and may create disposal or environmental concerns, and refilling in spring can be costly.

Decision Checklist

• Is your pool type (above‑ground vinyl, in‑ground concrete, etc.) suited to being drained without structural damage?
• Do local climate conditions and freezing temperatures make winterizing essential for your equipment?
• Can you safely dispose of or reuse the drained water while complying with any local water‑use regulations?

Alternatives to Consider

Instead of a full drain, you might opt for a partial winterization: lower the water level below the skimmer, add antifreeze to plumbing, and use a pool cover to protect against ice. For in‑ground pools, installing a freeze‑protective pump and using a robust cover can often be enough to avoid damage without the risks of a total drain.

Final Recommendation

If you have an above‑ground, removable pool or a well‑designed in‑ground pool with a proven drainage system, draining in winter can be a safe way to protect equipment and simplify maintenance. However, for most permanent in‑ground concrete or gunite pools, the risks usually outweigh the benefits. In those cases, focus on proper covering, water level reduction, and equipment protection. Always consult a qualified pool professional before draining, especially if local regulations or structural concerns are present.