Energy secretary Claire Coutinho has asked the Competition and Markets Authority (CMA) to carry out an investigation of the home heating market. Coutinho said she was particularly concerned that a lack of competition within the home heating appliance market meant that customers were not always getting a fair deal. She also implied that recent pricing decisions by gas boiler manufacturers had strongly influenced the government’s decision to delay the start of the clean heat market mechanism – AKA the boiler tax – until next year.