Can we use our heater straight away after it has been cleaned? September 29, 2014 No Comments Yes as you normally would operate your central heating. Previous Post Next Post You may also like September 29, 2014 How do I know if my ducts need cleaning ? February 18, 2019 Can you do the Servicing of The Heater? September 7, 2017 How can duct cleaning improve the air quality inside the house?