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).
They can be powered by natural gas, propane, oil or electricity. Boilers come in two types  the hot water and steam. Hot water boilers are small, compact, energy efficient and needs low maintenance. As to how they work, water is usually heated in boilers between 160 to 180 degrees Fahrenheit. The hot water is then circulated by pumps through pipes in the home or building. This heated water then warms radiators installed in the rooms and gives off the warm air.