Maintenance Costs March 12, 2019 22:01 Updated The cost to maintain a Modpool is the same as an in-ground pool: Energy/Year: $800-1200 Chemicals/Year: $500-800 Cartridge Filter Change every 1 year will be $250 USD The UV Sanitation System addon can cut Chemical costs by 50% Related articles Rust Maintenance Exterior Liner Repair Plunge Steps Window Maintenance Changing Your Cartridge Filter