Bivalent Heat Pump saves homeowner £’000s compared to oil

Bivalent Heat Pump saves homeowner £’000s compared to oil

7 year Return £17,500
Payback 4 years (23% return)
Cost £10,500
Bill Saving £1,400 p.a.
Income £1,100 p.a.
Carbon Offset 5,000 Kg p.a.

Return is calculated using combined bill savings and subsidy earnings. Bill savings are calculated using estimated energy usage and either the electricity price at the time of installation (1 June, 2013) or, for our heating products, the existing fuel type available to the property.

This 18th century farm house was heated by oil with the owner suffering crippling, ever-increasing bills. Without enough space for a Biomass Boiler, EnergyMyWay was charged with investigating alternative renewable heating options.

A full room-by-room heat loss survey was carried out which showed that the load requirement was greater than a single heat pump could cope with. Biomass was not an option as there was not sufficient space for a suitable fuel store and access for delivery was restricted.

A cascade heat pump arrangement fell out with the budget so a Mitsubishi Ecodan connected in bi-valent mode with the existing oil boiler was decided. The Ecodan provides heating and hot water until the ambient temperature drops below 2 degC at which point the oil boiler picks up the load.

This installation qualifies for Renewable Heat Incentive payments, which, together with the bill savings will more than cover the cost of the Heat Pump in just 4 years.