Chemicals & Filters
At Direct Heating Supplies we have a wide range of water treatment and filtration products. We have all the chemicals and filters needed to treat your central heating and plumbing systems from leading brands including Fernox, Monarch and Sentinel.
Search in chemicals & filters
Need some help?
Take a look at our handy guides
Whether you are looking for a new boiler, planning how many radiators you need or starting your renewable energy journey we have a handy guide to help you.
Our guides include product information, recommendations and advice when purchasing and installing new appliances in your home.