You can enjoy your fiberglass pool year-round with proper heating, depending on your location, pool enclosure, pool size, heating systems, insulation, and more. If you live in regions with mild winters, you can use your pool throughout the year with the right heating. However, in areas with harsher winters, you will need an enclosure and adequate plumbing insulation to prevent water from freezing. It is advisable to consult your authorized PENTARM POOLS dealer or pool installer for guidance.