and that they not be used as a primary heating system. Are those recommendations really going to be followed? That unvented gas and kerosene appliances are a bad idea is no secret. A lot of scientists ...

This heating system uses a mix of gravity and ... Low-pressure-vented systems and high-pressure-unvented systems. The vented system usually requires a hot water feed tank in the loft of the ...

Dear Action Line: I noticed the Friday World's tips on preventing fires and carbon monoxide poisoning didn't mention the "unvented gas logs ... the primary source of heat. The devices are ...

This heating system uses a mix of gravity and ... Low-pressure-vented systems and high-pressure-unvented systems. The vented system usually requires a hot water feed tank in the loft of the ...