We had complete central heating system fitted in Scotland two years ago free of charge. Also had Wi-Fi smoke alarms fitted as well. Warmhome Scotland carried out the work. Each home who applied where entitled to £7500 of works carried out. Also had old cavity wall removed and up to date cavity wall insulation fitted. They also put foam under the floor for insulation. Made a massive difference to heating my home. You can apply every seven years as well to have boiler replaced.