Cold Plunge Accessories

Strongly recommended. An insulated cover cuts chiller runtime by 40–60%, keeps water cleaner (no dust, leaves, or debris), and helps maintain temperature during power outages. Quality covers also provide a safety barrier — especially important around children and pets. Most covers pay back the investment in reduced electric costs within a year.

Options in order of popularity: ozone systems (integrated with most chillers, minimal chemicals needed), UV sterilization (similar, slightly less effective against biofilm), and chlorine or bromine (works but can irritate skin and requires chemistry balancing). Hydrogen peroxide is a low-residue alternative some users prefer. Test weekly with pool test strips.

For regular home use (2–4 plungers), plan to fully drain and refill every 2–4 months. Heavy use or multiple users — every 4–6 weeks. Signs to drain sooner: visible cloudiness, unusual smell, or water chemistry that won't stabilize. Filter cartridge changes every 4–6 weeks keep the water between drains.

For most users, steps or a stool are worth having — cold shock reduces coordination and balance, and slippery pool decks around the plunge increase fall risk. Dedicated plunge entry stools are typically weight-rated for safety and sized for easy in/out. This is one of the cheapest and most worthwhile accessories.