Examples of minor repairs include plumbing problems, repairing luminaires, replacing worn floors, or changing heating filters. The auxiliary heat exchanger coil or the evaporator and condenser coils are types of heat exchangers. An auxiliary heat exchanger means a secondary or extra heat exchanger in the system. It is usually seen in heat pumps and large systems that cool large spaces.
The distinction between a major alteration and a minor alteration and a major repair and a minor repair is blurred by outdated rules and guidance material. Minor repairs are jobs that can sometimes be done at home with a minimum of knowledge and basic tools that any homeowner is likely to have on hand.