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Diarmuid O Neill Associates Chartered Surveyors |
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BER Explained |
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A Building Energy rating is similar to the energy rating on a fridge or dishwasher with a scale of A-G. A rated homes are the most energy efficient and G rated homes the least efficient. BER certificates are now compulsory for all homes being sold or offered for rent. How is a BER calculated? A BER is based on the characteristics of major components of a dwelling as well as construction type, insulation, heating systems, ventilation, lighting, etc. It is calculated on the basis of a notional standard family with a standard pattern of occupancy. Energy performance is expressed in Kilowatt Hours per square metre per year (kWh/m2/yr) Carbon Dioxide emissions are expressed in kilograms per square metre per year. A BER is only an indication of the energy performance of a house. Actual energy usage depends on the occupant. Benefits of BER Makes energy performance visible to prospective buyers/tenants. Provides advice on how to improve energy efficiency and reduce CO2 emissions.
How long is a BER Valid for? A BER is valid for up to 10 years provided that there is no material change to the dwelling that could affect its energy performance. The maximum term validity for a provisional BER is 2 years.
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BER (BUILDING ENERGY RATINGS) |
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BER |