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.

A furnace for a heating, ventilation, and air conditioning (HVAC) unit includes a heat exchange tube configured to flow combustion products therethrough and place the combustion products in a heat exchange relationship with an air flow directed across the heat exchange tube. The furnace also includes a burner assembly fluidly coupled to a first port of the heat exchange tube and configured to generate the combustion products directed into the heat exchange tube via the first port, and a draft inducer blower fluidly coupled to a second port of the heat exchange tube and configured to draw the combustion products through the heat exchange tube. The burner assembly is higher in position than the draft inducer blower relative to a base of the HVAC unit.

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 is related to a showerhead including a housing, a turbine, and a shutter. The housing defines a fluid inlet and a chamber in fluid communication with the fluid inlet. The chamber includes a plurality of engagement teeth and defines outlets for a first nozzle bank and a second nozzle bank. The turbine is received in the chamber. The shutter is received in the chamber and rotatably coupled to the turbine such that rotation of the turbine causes movement of the shutter. The shutter includes a plurality of shutter teeth positioned around a perimeter of the shutter. Engagement of the shutter teeth and the engagement teeth act to restrict the shutter from rotating while allowing the shutter to move across the chamber in a sliding motion.

A gas furnace according to an embodiment of the present disclosure includes: a mixer for mixing air and a fuel gas, which are introduced through an intake pipe and a manifold, respectively, to form a mixture; a mixing pipe through which the mixture, having passed through the mixer, flows; a burner assembly for producing a combustion gas by burning the mixture having passed through the mixing pipe; a heat exchanger through which the combustion gas flows; an exhaust pipe through which an exhaust gas, as the combustion gas having passed through the heat exchanger, is discharged outside of the gas furnace; and an inducer for inducing a flow of a fluid through the intake pipe, the mixer, the mixing pipe, the burner assembly, the heat exchanger, and the exhaust pipe. In this case, the mixer has a front end connected to the intake pipe, a rear end connected to the mixing pipe, and a side surface connected to the manifold.

According to aspects of the embodiments, an integrated light and heat arrangement of low profile light-emitting diode (LED) fixture to harness both the light and the heat generated by the LEDs is described. New system architectures and example form factors are provided for the development of new LED fixtures for integrative lighting and heating arrangement to increase their overall luminaire system efficiency. The integrative lighting and heating arrangement of the LED fixture in low profile design can minimize interference of harvesting the heat from LEDs with their light output. The heat which would otherwise be wasted from LEDs is harvested for the purpose of heating up some nearby body, such as a body of air, or a component, or a lens to accomplish some benefits, including, for example, reduction in overall energy uses for space heating, cooling, and lighting and associated cost, and melting snow and de-icing on outdoor LED fixtures for safety and security.

A method for cooling or heating a building is provided. An air flow can be created in an air duct and the air flow can be cooled or heated by an air conditioning system or furnace. The cooled or heated air flow can then pass through a heat exchanger connected to a radiant heating loop running through a floor or slab with a liquid circulating through them. When the airflow is being cooled or heated by the air conditioning system or furnace, the air flow will alter the temperature of the liquid circulating through the heat exchanger herefore the temperature of the slab. When the temperature of the slab varies from the temperature of the building, liquid that has been circulated through the radiant heating loop can be used to alter the temperature of the air flow passing through the heat exchanger.

A method for cooling or heating a building is provided. An air flow can be created in an air duct and the air flow can be cooled or heated by an air conditioning system or furnace. The cooled or heated air flow can then pass through a heat exchanger connected to a radiant heating loop running through a floor or slab with a liquid circulating through them. When the airflow is being cooled or heated by the air conditioning system or furnace, the air flow will alter the temperature of the liquid circulating through the heat exchanger herefore the temperature of the slab. When the temperature of the slab varies from the temperature of the building, liquid that has been circulated through the radiant heating loop can be used to alter the temperature of the air flow passing through the heat exchanger.

A method controls an air handler that generates heated air from hot water generated by a water heater. The method includes generating a signal in the presence or absence of an indicia of water flow associated with the water heater; initiating operation of a pump associated with the air handler when the signal indicates that water flow associated with the water heater is at least at a selected level to supply hot water to the air handler sufficient to generate heated air; and/or terminating operation of the pump and/or a blower/fan associated with the air handler when the presence or absence signal indicates that the water flow associated with the water heater is less than the selected level.

A method controls an air handler that generates heated air from hot water generated by a water heater. The method includes generating a signal in the presence or absence of an indicia of water flow associated with the water heater; initiating operation of a pump associated with the air handler when the signal indicates that water flow associated with the water heater is at least at a selected level to supply hot water to the air handler sufficient to generate heated air; and/or terminating operation of the pump and/or a blower/fan associated with the air handler when the presence or absence signal indicates that the water flow associated with the water heater is less than the selected level.