HeaterYears manufacturedOutputFlueing arrangement
Mk I Hydraflame — Console Mk I Hydraflame — Console 1963–1968 35,000 BTU Rear flue
Mk I Hydraflame — Inbuilt, dual room Mk I Hydraflame — Inbuilt, dual room 1963–1968 35,000 BTU Top flue
Mk II (Series 10) Hydraflame — Console Mk II (Series 10) Hydraflame — Console 1969–1974 53,500 BTU Rear flue
Mk II (Series 10) Hydraflame — Inbuilt, dual room Mk II (Series 10) Hydraflame — Inbuilt, dual room 1969–1974 53,500 BTU Top flue
Series 40 “Burwood” — Console, curved front glass Series 40 “Burwood” — Console, curved front glass 1974–early 1980s — Top flue
Series 40 “Burwood” — Inbuilt, curved front glass Series 40 “Burwood” — Inbuilt, curved front glass 1974–early 1980s — Top flue

See more heaters, tanks and chimneys in the picture album.