Solar Pool & Spa Heating System Sizing Calculators

EcoOnline sells solar powered and mains powered solar pool & spa heating systems, choose from the links below.

• Solar Powered - Vertex™ Solar Spa Heating Calculator - for spa baths less than ~ 2,000L
• Solar Powered - Vertex™ Solar Pool & Spa Heating Calculator - for swim spas and small pools greater than ~ 2,000L but less than ~ 20,000L
• Mains Powered - Solar Pool Heating Calculator - for pools greater than ~ 20,000L