Evoworld Pellet Boilers | Aqua-Therm, LLCEvoworld Pellet Boilers Aqua-Therm is proud to introduce Evoworld advanced high-efficiency pellet and wood chip boilers. Evoworld offers a complete range of advanced wood pellet and wood chip-fueled boilers – from 25kW up to 500kW – or 50,000 BTU to 1,700,000 BTU.