Oil prices dropped by an average of 9.5% in 08/09 compared to the previous winter period 07/08. The mean temperature for East Anglia during winter 07/08 was 5.7°C. The mean temperature for East Anglia during winter 08/09 was much cooler at 3.4°C. The heating system thermostats are set to 16°C, resulting in an increase in the requirement for heating in East Anglia of 22%.
This analysis excludes the purchase and installation costs of £21,268 in the first year.
“Overall savings taking into account lower temperatures and prices in winter 08/09 = 45.07%. The full cost of the Airius units is re-coupled within a matter of months – first winter savings of £62,351 measured against a total spend of £21,268.” – Paul Matten (Plant Engineer)