You just can't beat an open log /smokeless coal fire - hard work, but when it runs 8 radiators plus provides all our hot water for 8-9 months ..... we live quite rural - the rich are now putting log burners in daily ......I have had mine since 1987 - chimney swept for £50.00 per year .....very dusty though .... but fantastic BTU output ..... The coal we buy now is man made nuggets, plus we buy thermal Birch tree sawdust logs - we have gravity feed plus a central heating pump .... quite economical, but not PC .....