Nestler WBA series boilers are available in capacities from 1 to 30 TPH as steam and hot water generators. Their features include a wet back construction in 3-pass design, compact design, skid mounting with factory fitted insulation and cladding which minimizes heat losses, a large heating surface area and flexibility of firing with a diverse range of fuels such as light, medium and heavy grades of fuel oils, natural gas, LPG, bio-gas and oil/gas. Nestler WBA boilers offer competitive advantages like reduced space requirements, improved combustion and low fan HP resulting in lower power consumption and a minimum guaranteed efficiency of 88 +/- 2% (92 +/- 2% with optional economiser)