It's important to figure out what type of headache is causing your pain. If you know your headache type, you can treat it correctly. In one 2004 study, 80% of people who had a recent history of self-described or doctor-diagnosed sinus headache, but no signs of sinus infection, actually met the criteria for migraine.
Different types of boilers and boiler brands. The boiler market in the UK is dominated by one particular type of boiler: the condensing boiler. However, there are different types of condensing boiler, including combi-boilers, heat-only and system boilers. Popular brands producing combi-boilers include Baxi and Glow Worm (both Baxi heating boilers and Glow Worm boilers are British made).
1 Flash boiler: A flash boiler is a specialized type of water-tube boiler in which tubes are close together and water is pumped through them. 2  A flash boiler differs from the type of mono-tube steam generator in which the tube is permanently filled with water.