SUPPLEMENTAL DETERMINATIONS APPLICABILITY: The NH Energy Code applies in every community in the state of New Hampshire. (RSA 155:D) INSULATING EXISTING BASEMENTS: A basement which is being converted to living space does not need to comply with the NH Energy Code or require code approval. It should be recognized, however, that heating degree days are similar for below grade walls and above grade walls, so every voluntary effort should be made to insulate those walls and/or exposed slab edges. CHURCHES: Churches are required to conform to the provisions of the appropriate NH Energy Code, Residential if under 4000 sq feet or Commercial if 4000 sq feet or over. HEATING SYSTEM PIPING: Hydronic heating system pipes must be insulated to R-4 where they are outside the conditioned space of the structure in residential construction. For example, if they are in an uninsulated basement or in a chase outside of the insulated envelope they must be insulated. HOT AIR DUCTS: Furnace ducts must be insulated and sealed to at least R-3 where they run outside of the conditioned space of the structure in residential construction. SLOPED CEILINGS: Slopes may be entered into NHcheck as "Raised Truss" construction if the full R-value of the insulation is achieved over its entire width, for example, knee walls are not notched into the rafters. LOG HOMES: Log walls should be entered as having a thickness of 7" when using Nhcheck unless the dimensions of the logs are greater than 7".