Landlords and homeowners are paying an average of £5,787 to buy and fit a heat pump after deducting the £7,500 government grant.
Most portfolio landlords have been asked to make energy efficient improvements by their tenants in the past year, according to a new poll.
Heat pump sales continue to be hampered by high costs, lown awareness and a lack of long-term financial support, the government’s spending watchdog has warned.
