Abstract: In various implementations, a burner assembly may include a body coupled to burner heads. The body may include one or more converging and/or diverging parts. For example, the body may include a diverging part proximate one or more of the burner heads of the burner assembly. The body may allow a predetermined fuel/air ratio to be provided to the burner head, in some implementations.

Abstract: In various implementations, a multi-burner head assembly may include a venturi inlet coupled to burner heads. The multi-burner head assembly may allow control of the flame profile generated by the assembly. For example, burner heads of the multi-burner head assembly may include different characteristics, such as height.

Abstract: In various implementations, a burner may include two venturi inlets coupled to one or more burner heads. The venturi inlets may be opposingly disposed. During use, fuel may be provided to the burner via the two venturi inlets and at least partially combusted proximate the burner heads.

Abstract: One aspect of this disclosure provides a zoning baffle for a gas furnace. This embodiment comprises a housing, a primary heating zone located in the housing and comprising one or more heating chambers. A blower having an exhaust opening is located adjacent the primary heating zone and is positioned to force air through the primary heating zone. A zoning baffle is located between the blower and the primary heating zone. The zoning baffle comprises spaced apart baffles oriented substantially parallel with the one or more heating chambers. A method of manufacturing a gas furnace is also provided.

Abstract: Secondary heat exchanger assembly for a heat exchanger unit comprising a hot header box configured to receive combustion gases from a primary heat exchanger assembly of the heat exchanger unit, a cold header box configured to transfer combustion gases to an induction assembly of a furnace unit the heat exchanger unit is part of and heat transfer zone located between the hot and cold boxes. The zone includes secondary heat conduction tubes coupled to the hot box to receive the combustion gases passing through the hot box, and, coupled to the cold box to deliver the combustion gases to the colder box. Air, when blown from a blower unit of the furnace unit through the zone, has a non-uniform velocity profile across a width of the zone, and, a heat transfer mass of the zone across the width is configured to have a substantially similar-shaped non-uniform heat transfer mass profile.