This standard requires a rated heating capacity of 83.7 MJ/h {20 000 kcal/h} (125.6 MJ/h (30000 kcal/h} for combined hot water supply) or less. Cooling capacity of 62.8 MJ/h {15000 kcal/h} or less. This standard also specifies heating and cooling units (hereinafter referred to as ``units'') used in residential homes.However, this standard also specifies heating and cooling units that are equipped with a water heater. Excluded from this standard by the respective Japanese Industrial Standards.