Gas burner and heating appliance

A gas burner (100), comprising:

• a surface (102) forming a burner deck (104) comprising burner deck portions (106) and a separation surface (108),
• wherein the burner deck portions (106) have holes (204),
• wherein the separation surface (108) is arranged to separate the burner deck portions (106) from each other,
• wherein less than 5.0% of a surface area of the burner deck (104) is formed by a combined surface area of the holes (204),
• wherein the burner deck portions (106) are adapted to define reaction zones (200) extending over the burner deck portions (106),
• wherein each of the burner deck portions (106) comprises a plurality of holes (204),
• wherein the holes (204) have a diameter or a length or a width in the range of 0.4-1.0 mm,
• wherein the holes (204) are adapted to provide gas (202) to be combusted in the reaction zones (200),
• wherein the burner deck portions (106) are arranged relative to each other to prevent the reaction zones (200) from extending over the separation surface, and
• wherein the burner deck portions (106) comprise a first burner deck portion, a second burner deck portion and a third burner deck portion, wherein the first burner deck portion is separated from the second burner deck portion by the separation surface (108) in a first direction (z), wherein the first burner deck portion is separated from the third burner deck portion by the separation surface in a second direction (x), wherein the first burner deck portion is adjacent to the second burner deck portion and the third burner deck portion, wherein the first direction (z) and the second direction (x) are different from each other.