How much does it cost to run a swim spa?

Monthly electricity for a swim spa usually lands between $50 and $150, with cold-climate winter months at the top of that range. The factors that move the number most: - **Set temperature:** Every degree costs money. Holding 86F for swimming is significantly cheaper than holding 100F. - **Insulation:** Full-foam and multi-layer insulated cabinets hold heat far better than partially insulated ones. This is where premium models earn back part of their price in cold climates. - **Cover quality and fit:** Most heat loss is through the surface. A sagging, waterlogged cover can double heating cost. - **Pump runtime:** Circulation and filtration schedules matter; low-amp circulation pumps use much less than the swim jet pumps. If you plan to swim year-round in a northern climate, prioritize insulation and cover specifications over jet count.