The Thermeta burner has proven for almost half a century that solidity and simplicity of construction result in a high operational safety. The robust burner house has been constructed from sheet steel varying in thicknesses from 5 to 12 mm and provided with a state-of-the-art Low NOx combustion system for burning (natural) gas. By applying the most recent developments in the field of Low NOx, Thermeta can amply comply with the legal environmental standards up to even 35 mg/Nm3 for specific boilers. Although the LN-burner is really silent, Thermeta also developed a burner with a sound-insulating housing. This LNS-burner or ‘silent burner’ complies with stringent demands with respect to noise.