Tube firing burner

Tubular heat exchanger for infrared heater

Universal energy adaptor increaser

Upright heating burner having a heatsink device background...

Valve for appliance combustion air inlet

Variable valve system

Vent cover assembly

Venting system with natural convection cooling

Versatile heater for under-blanket heating, tent heating, and fo

Vertical or horizontal vent assembly

Wall mounted vented heater

Wall thimble with outside air inlet

Wall thimble with outside air inlet

Warm air blowing heater

Warming apparatus

Waste oil heater having fuel control system

Wet-based, wood-burning boiler

Wick heaters

Wind screen apparatus for outdoor grills

Wood and coal burning heating method and apparatus