HEATING MEDIUM CIRCULATION APPARATUS

SPARK IGNITION MODULE AND METHODS

HVAC equipment with refrigerant gas sensor

Systems and methods for operating a furnace

GAS FURNACE AND AIR CONDITIONER HAVING THE SAME

System and Method for Monitoring Operation of a Heating System for a Space

DRAFT INDUCER MOTOR CONTROL SYSTEM

HVAC equipment with refrigerant gas sensor

Variable capacity furnace control

Heater

Fuel-fired appliance with exhaust dilution

SYSTEMS AND METHODS FOR OPERATING A FURNACE SYSTEM

User interface for heater

Identification of premature heat exchanger failure

Dynamically adjusting heater

Systems and methods for operating a furnace

Method and system for vented rollout switch

Spark ignition module and methods

Condensate trap for gas furnace

HVAC system flame sensor

Heater

ULTRA-LOW NOx BURNER

Method, system and temperature control of a heating, ventilation and air conditioning unit

Efficient limit switch design and its location in a gas furnace

Fuel enrichment system for fuel-fired appliance

RPM control method for inducer for gas furnace

PORTABLE HEATING SYSTEM

Blow through direct fired heating, A/C and ERV

Portable indirect fuel fired heater with automated combustion optimization

Furnace control systems and methods

Method and system for vented rollout switch

Heater structure

Control method of gas furnace

Control method of gas furnace

Topside induced draft fan

Movable air-flow guide vane for a furnace

Draft inducer motor control system

Parametrically optimized flameless heater system to generate heat

RPM control method of blower for gas furnace

FORCED AIR HEATER INCLUDING MULTIPLE ON-BOARD SOURCES OF ELECTRIC ENERGY

Indirect gas furnace

High efficiency modulating gas furnace

GAS SEDIMENT TRAP ASSEMBLY

SYSTEM AND METHOD FOR OPERATING A PORTABLE AIR HEATER

Inlet screen assembly for ultra low NOx gas-air mixing system

FORCED AIR HEATER INCLUDING MULTIPLE ON-BOARD SOURCES OF ELECTRIC ENERGY

Furnace accessory

Fluid fuel heater to heat air and a method for operating said heater

High efficiency heater with condensate collection and humidification

IGNITER FAILURE DETECTION ASSEMBLIES FOR FURNACES, AND CORRESPONDING METHODS OF DETECTING IGNITER FAILURE

Blow through direct fired heating, A/C and ERV

Vehicle heater

Fuel-fired appliance with exhaust dilution

Fuel enrichment system for fuel-fired appliance

Method of and system for flame sensing and diagnostic

Combustion acoustic noise prevention in a heating furnace

Intelligent HVAC control including automatic furnace shutdown event processing

Movable air-flow guide vane for a furnace

Forced air heater including multiple on-board sources of electric energy

Indirect gas furnace

HVAC furnace condensate removal system

Method of and system for flame sensing and diagnostic

VENT-FREE HEATER WITH ENVIRONMENTAL SENSORS

PORTABLE HEATER WITH ENVIRONMENTAL SENSORS

Stove

Systems and methods for controlling gas powered appliances

Flue baffle

Gravity-style furnace subunit inside a gas-induced draft furnace

Furnace controller and a furnace that controls a gas input rate to maintain a discharge air temperature

Furnace, a high fire ignition method for starting a furnace and a furnace controller configured for the same

Method and Apparatus to Provide Ventilation for a Building

Method of field conversion of a heating system to a multiple stage modulating gas fired heat exchanger

HEATER CONFIGURED TO OPERATE WITH A FIRST OR SECOND FUEL

Performing integrity checks on climate control system components

Monitor for a natural gas-fired appliance

HEATING APPARATUS WITH FAN

Intelligent HVAC control including automatic furnace shutdown event processing

Damper Safety Switch

Refractory for heating system

Dual fuel heating assembly with selector switch

Method of and system for flame sensing and diagnostic

Selectable efficiency versus comfort for modulating furnace

Connected hot-water supply system

Heater for indoor warming using waste heat of exhaust gas

Inward fired pre-mix burners with carryover

Warm air heater

Fluid fuel heater to heat air and a method for operating said heater

WIRELESS SPACE HEATER

Gas device with increased fuel evaporation efficiency

PASSIVE PUMP FILTER

High efficiency heater with condensate collection and humidification

Blow through direct fired heating, A/C and ERV

Dual fuel heating assembly with reset switch

Furnace combustion system and method

Method and Apparatus for Controlling and Regulating Flow of Fuel Oil in Heating Systems

Balanced high efficiency outdoor heater

Heating system

Gas heater

Room heater

Multi-component system for treating enclosed environments

Forced air heater including multiple on-board sources of electric energy

Furnace with modulating firing rate adaptation

Gas-fired heater with carbon dioxide detector

Valves, Pressure Sensing Devices, and Controllers for Heating Appliances

Gas-fired heater with environmental detector

Direct fired heaters including premix burner technology

Forced Air Heater Including On-Board Source of Electric energy

Furnace efficiency tuning device

Heater configured to operate with a first or second fuel

Heating power adjusting apparatus of hot blast heater

Protective grill for an infrared heater

Furnace controller and a furnace that controls a gas input rate to maintain a discharge air temperature

Combustion acoustic noise prevention in a heating furnace

Combustion blower control for modulating furnace

HEATING DEVICE AND METHOD FOR ITS OPERATIONS

Valves, pressure sensing devices, and controllers for heating appliances

Furnace burner radiation shield

Dual fuel heater

Furnace with modulating firing rate adaptation

Adaptive heating system with exchangeable heat sources

Electronic water level sensing apparatus and associated methods

Gravity-style furnace subunit inside a gas-induced draft furnace

Rooftop high-efficiency gas furnace control with condensate management

Gas-fired heater with carbon dioxide detector

Compensating for Gas Applicance De-Rate at High Altitudes

Furnace control system and method

Furnace, a high fire ignition method for starting a furnace and a furnace controller configured for the same

Heater configured to operate with a first or second fuel

FORCED AIR HEATER INCLUDING ON-BOARD SOURCE OF ELECTRIC ENERGY

Modulating gas furnace

Heating device

Gas-fired furnace and intake manifold for low NOapplications

Multiple Barrel Forced Air Heater

Push and Pull Premix Combustion System With Blocked Vent Safety Shutoff

Combustion blower control for modulating furnace

THERMOCOUPLE SHUTOFF FOR PORTABLE HEATER

Heater configured to operate with a first or second fuel

Method and system for controlling an inducer in a modulating furnace

Dual fuel heater

Heating apparatus with fan

AUTO CURE VARIABLE FAN DRIVE CONTROL SYSTEM AND ASSOCIATED METHODS

Cascading set point burner control system for paint spray booths

Thermos at algorithm for fully modulating furnaces

WARM AIR FURNACE

Forced air heater including on-board source of electric energy

Methods and apparatus providing flame-less heat

IGNITION CONTROL WITH SAFEGUARD FUNCTION

Gas-fired heater with carbon dioxide detector

Modulating gas furnace

Thermocouple Shutoff for Portable Heater

Stepper motor gas valve and method of control

Heater configured to operate with a first or second fuel

Gas-Fired Heater with Environmental Detector

Hybrid heating system and method

Warm air furnace

Selectable efficiency versus comfort for modulating furnace

Combustion blower control for modulating furnace

Combustion blower control for modulating furnace

Inducer speed control method for combustion furnace

Vertically-storable combustion heater

Heater configured to operate with a first or second fuel

Heating device and method for its operations

Air heating apparatus comprising a flame monitoring device

Direct-fired, gas-fueled heater

Modulating gas furnace and associated method of control