Smart radiator valves let you control the temperature in individual rooms when your central heating is on. They can be programmed and controlled remotely through your smartphone. Manufacturers promise ...

Smart radiator valves allow you to control your radiators with your smartphone and offer a potential saving on your heating bills. We explain how they work, and if they are worth the investment. We've ...

Heart valves keep blood flowing in the right direction between the heart's four chambers. Mechanical valves last longer than bioprosthetic valves but require lifelong blood thinners. Most of the time, ...