How much dust accumulates in a central heating system? September 29, 2014 No Comments It varies from one house to another for example: If you have pets, construction going on, unsealed roads & very dry weather etc…..Go to view how dusty some central heating systems accumulate dust. Previous Post Next Post You may also like September 29, 2014 Can we use our heater straight away after it has been cleaned? September 29, 2014 Do you sell filters for the return air vents? September 29, 2014 Are there any health benefits that come from HVAC system cleaning?