According to GasBoilerGuide.com, online reviews of Buderus gas boilers are evenly split, with half of reviewers recommending them highly and the other half calling them unreliable. At FurnaceCompare.com most consumer reviews are negative, with many reviewers stating that they need frequent repairs.
GasBoilerGuide.com states that positive online reviews often focus on the efficiency and environmental friendliness of Buderus gas heaters, while negative reviews often mention excessive noise and vibration, leakage problems, lack of durability and safety issues.
Many reviewers at FurnaceCompare.com experienced leaks, inconsistent heat output and difficulty in obtaining qualified service and replacement parts. Others say Buderus heaters are highly reliable if they are installed properly.