PROCESS AND APPARATUS FOR COMBUSTING HYDROGEN AND RECYCLING COMBUSTION PRODUCTS

Gas Furnace with Heat Exchanger

METHOD FOR CONTROLLING HEATING APPARATUS

AIR HEATING APPARATUS

PANEL ASSEMBLY AND AIR HEATING APPARATUS INCLUDING THE SAME

HVAC SYSTEM WITH BAFFLES

Gas furnace with heat exchanger

TOP FIRED OUTDOOR GAS HEAT EXCHANGER

GAS FURNACE AND AIR CONDITIONER HAVING THE SAME

GAS FURNACE AND AIR CONDITIONER HAVING THE SAME

Heating Apparatus and Recreational Vehicle With Heating Apparatus

POWER AND HEAT GENERATOR SYSTEM AND RELATED METHODS

DIVERTER PLATE FOR FURNACE OF HVAC SYSTEM

Gas fired window heater

Dynamically adjusting heater

Pre-mix burner assembly for low NOx emission furnace

Method and system for vented rollout switch

Condensate trap for gas furnace

Fuel enrichment system for fuel-fired appliance

Heat exchanger and water heating apparatus

Diverter plate for furnace of HVAC system

HVAC system with baffles

Burner for gas-fired furnace

Method and system for vented rollout switch

Control method of gas furnace

Topside induced draft fan

INWARD FIRED LOW NOX PREMIX BURNER

HEATING ADAPTOR

CONTROL SYSTEM FOR BURNER

Finger air baffle for high efficiency furnace

HEAT EXCHANGER

Furnace

Indirect gas furnace

High efficiency modulating gas furnace

Pre-mix burner assembly for low NOx emission furnace

Positive pressure amplified gas-air valve for a low NOx premix combustion system

Vehicle heater

Furnace inducer choke and a gas furnace employing the same

Heat exchanger unit

TREATMENT INSTALLATION AND METHOD FOR TREATING WORKPIECES

High efficiency heater with condensate collection and humidification

Furnace

Fuel enrichment system for fuel-fired appliance

Reduced drag combustion pass in a tubular heat exchanger

Combustion acoustic noise prevention in a heating furnace

Indirect gas furnace

Enhanced heat transfer surfaces for heat exchangers

Enhanced Tubular Heat Exchanger

Heat exchanger having an interference rib

GAS TURBULATOR FOR AN INDIRECT GAS-FIRED AIR HANDLING UNIT

HEATING SYSTEM WITH ADJUSTABLE LOUVER

Furnace vent termination

Condensate trap for heating-cooling systems

Flue baffle

Premix burner internal flue shield

TUBE CONFIGURATION FOR A HEAT EXCHANGER, HEAT EXCHANGER INCLUDING THE TUBE CONFIGURATION, FLUID HEATING SYSTEM INCLUDING THE SAME, AND METHODS OF MANUFACTURE THEREOF

Heating furnace using energy saving mode

Multiple stage modulating gas fired heat exchanger

Gas furnace for indoor heating

Finger air baffle for high efficiency furnace

Alternative-fuel gas orifice having principal-fuel gas orifice temperature profile and a heating, ventilation and air conditioning system incorporating the same

Furnace header box having blocked condensation protection, a furnace including the header box and a blocked condensation protection system

Forced flue heater

Four pass high efficiency furnace and heat exchanger

HIGH EFFICIENCY, HIGH TURNDOWN FURNACE SYSTEM

Heater for indoor warming using waste heat of exhaust gas

Furnace inducer choke and a gas furnace employing the same

Transportable air heater

Heating unit for a fuel air heater, method for manufacturing said heating unit, and fuel air heater comprising said heating unit

Furnace cabinet with nozzle baffles

Furnace

Furnace cabinet with three baffles

Furnace cabinet with integral protrusion

Condensate trap for heating-cooling systems

Fuel-fired heating appliance having improved burner assembly

Heat exchanger coil for a recreational vehicle

Gas-fired tube swaged joint

HVAC systems and methods with improved heat exchangers

Furnace combustion system and method

A Straight Fin Tube with Bended Fins Condensing Heat Exchanger

HEAT EXCHANGER FOR USE IN A CONDENSING GAS-FIRED HVAC APPLIANCE

Infrared Gas Heater

Multi-Cone Fuel Burner Apparatus For Multi-Tube Heat Exchanger

Furnace and method for heating air

Heat exchanger

Fuel/air mixture and combustion apparatus and associated methods for use in a fuel-fired heating apparatus

Diffuser plate for premixed burner box

CONVERGING-DIVERGING COMBUSTION ZONES FOR FURNACE HEAT EXCHANGES

Heat exchanger and gas-fired furnace comprising the same

Finger air baffle for high efficiency furnace

Heat exchanger arrangement, especially for a vehicle heater

DEDICATED OUTDOOR AIR SYSTEM WITH PRE-HEATING AND METHOD FOR SAME

Combustion acoustic noise prevention in a heating furnace

HVAC furnace

High efficiency furnace/air handler blower housing with a side wall having an exponentially increasing expansion angle

Furnace burner radiation shield

Heat exchanger

Rooftop high-efficiency gas furnace control with condensate management

Air channeling baffle for a furnace heat exchanger

Indirect fired heater with inline fuel heater

Heat exchanger for a high efficiency hot air heating appliance and heating appliance equipped therewith

Modulating gas furnace

Fuel Oil Supply System from a Remote Source Including Recirculated Heating of Fuel Oil and Supplemented Supply Pressure

Gas-fired furnace and intake manifold for low NOapplications

Heating appliance for air heating

FURNACE WITH PRIMARY AND SECONDARY HEAT EXCHANGERS

Push and Pull Premix Combustion System With Blocked Vent Safety Shutoff

PREMIX AIR HEATER

Condensate collector system for multi-poise gas furnace system

Gas furnace condensate collector box

INDUCER FAN ASSEMBLY FOR A GAS FURNACE SYSTEM

Heat Exchanger System

Furnace heat exchanger coupling

FURNACE ASSEMBLY

Condensate pan with condensate trap

Condensing Gas Package Unit Configured to Drain Condensate Through Inducer Fan and Method of Reducing Fuel Consumption

VENTED, GAS-FIRED AIR HEATER

Burner for heater

WARM AIR FURNACE

Methods and apparatus providing flame-less heat

Alternative-fuel gas orifice having principal-fuel gas orifice temperature profile and a heating, ventilation and air conditioning system incorporating the same

Furnace vent termination

Header box for a furnace, a furnace including the header box and a method of constructing a furnace

Furnace header box having blocked condensation protection, a furnace including the header box and a blocked condensation protection system

Heat exchanger expanded overlap joint

Self-locating nitrogen oxide reduction baffle for furnace and gas furnace incorporating the same

Heat exchanger having an interference rib

Heat exchanger with fastener

Condensate trap for heating-cooling systems

Converging-diverging combustion zones for furnace heat exchanges

Condensation management system, a furnace including the same and a condensation collection box

Suspension bracket

Modulating gas furnace

Furnace

HOT AIR HEATER

High Efficiency Furnace/Air Handler Blower Housing with a Side Wall Having an Exponentially Increasing Expansion Angle

HEAT EXCHANGE TUBE WITH INTEGRAL RESTRICTING AND TURBULATING STRUCTURE

Hot gas generator and drying or dehydration facility implementing such a generator

Compact and Efficient Heat Exchanger, Furnace, HVAC Unit, Building, and Method of Making

High efficiency furnace/air handler blower housing with a side wall having an exponentially increasing expansion angle

FURNACE HEAT EXCHANGER

Vented, gas-fired air heater

Inducer speed control method for combustion furnace

FURNACE BURNER BOX

Heat exchanger

Condensate pan with condensate trap

Furnace with integrated blower housing and heat exchanger

Furnace with integrated blower housing and heat exchanger

Multi-channel heat exchanger

Space Heater with Microprocessor Control

Heat exchanger tube with integral restricting and turbulating structure

Furnace

Baffle design for a gas-fired unit heater

Burner port shield

Radiant tube heater assembly

Tubular heat exchanger with offset interior dimples

Textile machine with recirculating air heating effected by gas-heated head exchangers

Center firing indirect heat exchanger for spray drying and controls for same