Do-it-yourself boiler replacements can save money in certain situations, but local regulations and small mistakes can drive up the cost significantly. In addition, those lacking experience often spend more time than budgeted.
Some areas require a permit for replacing a boiler, while other areas require hiring certified help. The process of obtaining a permit can be difficult without expert experience.
In addition, mistakes can lead to structural damage, which may require spending far more than hiring an expert would cost. Even small mistakes can be expensive; misaligned parts, for example, can cause the system to operate inefficiently, leading to a small but regular expense that can go undetected indefinitely.