Methods and related systems for operating a furnace are disclosed. In an embodiment, the method includes activating a burner assembly and a first fan of the furnace to combust fuel and air and circulate combustion gases along a flow path extending through a heat exchanger of the furnace. In addition, the method includes operating a second fan of the furnace to circulate air across an external surface of the heat exchanger of the furnace and produce a conditioned airflow. Further, the method includes monitoring one or more parameters of a motor of the second fan indicative of an airflow rate of the conditioned airflow, and deactivating the burner assembly, whereby combustion of the fuel and air in the furnace ceases, in response to the one or more parameters indicating that the airflow rate is less than a minimum airflow rate.

The present disclosure relates to a gas valve assembly for a furnace. The gas valve assembly includes a gas valve including an inlet flange having an outer geometric profile and defining a gas inlet of the gas valve. The gas valve assembly also includes a bracket having a mounting panel, a first support flange, and a second support flange, where the mounting panel extends between and is integral with the first support flange and the second support flange. A slot is formed in the first support flange and defined by a portion of a perimeter of the bracket. The outer geometric profile of the inlet flange corresponds to a profile of the slot, and the slot is configured to receive and abut a portion of the outer geometric profile. A passage is formed in the second support flange and configured to receive a gas flow from the gas valve.

A heater is described. The heater includes a fuel cell to produce heated air, electricity and water vapor. The heater further includes a heating element operatively coupled to the fuel cell to convert the electricity to heat and a control system operatively coupled to the fuel cell and the heating element, the control system being configured to monitor and control the fuel cell and heating element.

A heater is described. The heater includes a fuel cell to produce heated air, electricity and water vapor. The heater further includes a heating element operatively coupled to the fuel cell to convert the electricity to heat and a control system operatively coupled to the fuel cell and the heating element, the control system being configured to monitor and control the fuel cell and heating element.

A collection of methods for monitoring the operation of a heating system configured to heat a space is provided. One method includes obtaining, by one or more computing devices, data from a fuel sensor for a period of time, the fuel sensor configured to detect an amount of fuel within a fuel supply for a furnace of the heating system. The method further includes determining, by the one or more computing devices, an adjustment to the operation of the heating system based, at least in part, on the data obtained from the fuel sensor. The method additionally includes adjusting, by the one or more computing devices, the operation of the heating system according to the adjustment.

A collection of methods for monitoring the operation of a heating system configured to heat a space is provided. One method includes obtaining, by one or more computing devices, data from a fuel sensor for a period of time, the fuel sensor configured to detect an amount of fuel within a fuel supply for a furnace of the heating system. The method further includes determining, by the one or more computing devices, an adjustment to the operation of the heating system based, at least in part, on the data obtained from the fuel sensor. The method additionally includes adjusting, by the one or more computing devices, the operation of the heating system according to the adjustment.

A device for heating a room (2) in a building by means of underfloor heating, the floor comprising pipe loops (4) for circulation of a hot medium, preferably water. The floor has a subfloor (1) and an upper floor (8) at a mutual distance, so that an air-filled chamber (16) is formed between them. In the outer wall (3) of the room there are inlet openings (7) for fresh air, which by means of negative pressure ventilation in the room (2) flows into the chamber (16), over the pipe loops (4) to heat up, and out through outlet openings (9) in the upper floor (8). The heat absorbed from the pipe loops (4) goes partly up through the upper floor (8), partly out into the room (2) as heated air. The pipe loops (4) extend transversely of the direction of movement of the air from the inlet (7) to the outlet (9) and are partly cast in concrete on the bottom of the chamber (16).

According to various aspects, exemplary embodiments are disclosed of blow through direct fired heaters including evaporator coils and/or energy recovery ventilation.

According to various aspects, exemplary embodiments are disclosed of blow through direct fired heaters including evaporator coils and/or energy recovery ventilation.

One or more techniques and/or systems are disclosed for a pellet stove that can be controlled remotely using a wireless communication network. A control unit can comprise memory and a processor to run programs and process other data. A wireless communications module can be used to send/receive, current and historical status information over a wireless network to/from a user's computing device, such as a smart phone. The user can receive the information about the status of the stove, and can monitor and send updates regarding the functionality of the stove. For example, a preset heating program can be activated remotely based on time and temperature, and the user can view and adjust the temperature, can adjust a fan speed, a fueling rate, and other functions of the stove.