About.com and GasBoilerGuide.com provide information on common problems and solutions for gas boilers. Specific troubleshooting steps are featured in the home repair section of About.com.
Home-repair experts offer many articles regarding gas boilers and other gas appliances on About.com. The article that explains common issues with gas boilers features a diagram of a boiler and discusses the functions of each component. Possible solutions are provided for problems including no heat generation, poor heat performance and a compromised expansion tank. Repair advice for water leakage and noisy pipes is explained. Information regarding thermostat issues connected to gas boiler problems can also be found on About.com.