The creators of the world’s first microwave-powered boiler have said it can provide a straightforward, zero-emissions replacement for the gas boilers that heat most homes in the UK. Heat Wayv is building prototypes and expects to trial the boilers in homes by the end of 2022, with the first sales to customers targeted for 2024. It says a unit suitable for a three- or four-bedroom home would cost about £3,500, the same as an equivalent gas boiler. Heating produces 14% of the UK’s carbon emissions , and is one of the most difficult obstacles in the drive to reach net zero emissions by 2050. Gas boilers will be banned in new-build homes from 2025 and are expected to be phased out entirely by the mid 2030s. The government is encouraging the installation of heat pumps, which are extremely efficient and cheap to run but have high upfront costs, can be disruptive to install and are not suitable for all properties. Hydrogen is also being suggested as a replacement for gas, but most experts think the supply of low-carbon hydrogen will be limited and expensive and would be best used for heavy industry and transport. The Heat Wayv unit is […]

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