APA Boilers have an aesthetic and innovative boiler design and achieve higher performance when combined with copper tube serpentine, they are produced in accordance with internationally recognized CE standards. The most important feature of the Standard Boilers is that the serpentine can be disassembled and changed. The advantage of the coil with copper pipes is that the heat transfer produces hot water in a shorter time than other coils. The inner surface of the boiler is covered with enamel, which is resistant to corrosion in accordance with the DIN 4753 standard, providing 700% hygiene. APA Single Serpentine Copper Tube Boiler and APA Double Serpentine Copper Tube Boiler are used in hotels, buildings, villas, factories, and wherever hot water is needed.