Level 3 & 4 commercial EPC’s are the same except a level 4 has a more powerful and intricate air conditioning and heating system. A level 3 cannot have an air conditioning system that is greater than 12kW over 12kW systems will require a level 4 EPC.
A level 5 commercial EPC has the same characteristics as either a level 3 or 4 but has a domed roof. As a domed roof requires a specific type of calculation methodology only level 5 assessors can complete a level 5 commercial EPC.
Properties that are exempt from an EPC are listed buildings, places of worship and temporary buildings that will be only in existence for 2 years or less.
How are commercial EPC’s calculated?
Commercial EPC’s are calculated the same way as a residential EPC except in greater detail. Each room is broken down into various walls, floors and ceiling and the materials used.
Lighting, heating and ventilation also plays a major part in the calculations as does hot water heating and storage.
A commercial EPC can take up to a few days to complete due to the mass of calculations and back end work required prior to submission. As this is a complex subject we have kept this brief. Therefore a full and more detailed explanation can be supplied if required.