These days boilers are more energy efficient than ever. One of the most common misconceptions about modern-day boilers is that they boil water inside the systems. Typically, these systems heat water to between 145 and 190 degrees which requires less energy. Despite using hot water to heat your home, boilers do not up the humidity in your space. The piping for these systems is closed. Norwalk Heating is proud to offer the best quality boiler systems and service to keep your home or business warm and running smoothly.