Air source heat pump installations typically start at around £12000 and can cost up to £20000 and beyond, not including the £7500 BUS Grant. Every system is different, in terms of size, and the amount of work needed to get it ready for an air source heat pump.   The efficiency of the system can usually be improved by spending more upfront on things like bigger radiators. We work with our customers to find the balance between upfront capital costs, and long-term energy savings.   Get in touch for more information about pricing.