Overview
In this course, we will be going through methods to properly size liners for solid-fuel fireplaces, gas appliances, and oil-burning appliances. 

During this class, we will look at firebox ratios and how they determine the correct size liner. We will go over different codes that apply to relining gas and oil appliances by themselves and manifolded together. This course will help you understand why sizing liners is so important to performance and safety.