A dual fuel boiler has a granular fuel burner and a fluid fuel burner. The fluid fuel burner is movable between a retracted stored position at a side of a combustion chamber-of the boiler and an extended operative position in which it extends out over a brazier of the granular fuel burner. Thus in the operative position substantially all of the flame and hot combustion gases generated by the fluid fuel burner in use are directed away from the brazier to prevent damage to the brazier.

A dual fuel boiler has a granular fuel burner and a fluid fuel burner. The fluid fuel burner is movable between a retracted stored position at a side of a combustion chamber-of the boiler and an extended operative position in which it extends out over a brazier of the granular fuel burner. Thus in the operative position substantially all of the flame and hot combustion gases generated by the fluid fuel burner in use are directed away from the brazier to prevent damage to the brazier.

A highly efficient indoor heating system and device is described. The device is equipped with an internal chimney, as well as vents that are configured to maximize the draft applied to the flame housed within a stove combustion area. The heater is configured to reach temperatures exceeding 300 degrees Fahrenheit in approximately ten minutes. A gravity fed fuel tube, potentially in communication with a wood pellet hopper, is configured to deliver fuel to the stove of the heater. Heat is distributed throughout the structure of the device, and a convection chamber within the device ensures that heat generated is not quickly lost via exhaust.

A gas hearth including a combustion chamber, a gas supplier for supplying combustible gas into the combustion chamber to a firebed simulator disposed in the combustion chamber, an ignitor for igniting the combustible gas in the combustion chamber, a flue-gas discharge duct connected to the combustion chamber for discharging combustion flue gases from the combustion chamber, and a metering means disposed in the combustion chamber for metering a pyrotechnical additive into the flames of the burning combustible gas during operation.

A gas hearth including a combustion chamber, a gas supplier for supplying combustible gas into the combustion chamber to a firebed simulator disposed in the combustion chamber, an ignitor for igniting the combustible gas in the combustion chamber, a flue-gas discharge duct connected to the combustion chamber for discharging combustion flue gases from the combustion chamber, and a metering means disposed in the combustion chamber for metering a pyrotechnical additive into the flames of the burning combustible gas during operation.

A portable combination gas and wood fire pit device comprises a spark screen disposed over a fire bowl and a grating disposed across an open top of the fire bowl. A gas burner is disposed in the fire bowl and below the grating. A cover plate is disposed over the gas burner and spaced above the gas burner to cover an open cup and neck of the gas burner from above. The spark screen has a cylindrical shape with vertical side wall extending above the fire bowl and a solid section and a mesh section. The solid section has interior and exterior perimeters forming a silhouette or stencil defining an object comprising at least: an animal, a person, a landscape, or combinations thereof.

A portable combination gas and wood fire pit device comprises a spark screen disposed over a fire bowl and a grating disposed across an open top of the fire bowl. A gas burner is disposed in the fire bowl and below the grating. A cover plate is disposed over the gas burner and spaced above the gas burner to cover an open cup and neck of the gas burner from above. The spark screen has a cylindrical shape with vertical side wall extending above the fire bowl and a solid section and a mesh section. The solid section has interior and exterior perimeters forming a silhouette or stencil defining an object comprising at least: an animal, a person, a landscape, or combinations thereof.