Abstract: A heating unit can reduce the rate of power consumption for heating a vehicle, so that the running distance of the vehicle is increased and hence the battery charging cycle of the vehicle is prolonged. A heating unit of a vehicle heating system includes a casing made of a metal material capable of electromagnetically shielding microwaves, a support arranged in the hollow section of the casing, a plurality of microwave absorbing/heat emitting members arranged at the support and a microwave outputting unit arranged in the casing to output microwaves toward respective microwave absorbing/heat emitting members, blown air being heated by heat generated as a result of absorption of microwaves by the microwave absorbing/heat emitting members at the time for blown air to flow from the upstream side to the downstream side in the hollow sections of the microwave absorbing/heat emitting members.

Abstract: An integrated heating unit operates in a first heating mode, in which the heat of combustion gases is transferred to return air, and a second heat recovery mode, in which the heat of exhaust air is transferred to fresh air. The heating unit of the present invention utilizes the same heat exchanging unit and fans to transfer the heat from the combustion gases to the return air and to transfer heat from the exhaust air to the fresh air. The exhaust air is recovered from a select group of rooms, e.g. kitchens and bathrooms. A secondary heater can also be provided in the integrated unit in the form of a fireplace for providing an alternate or an additional source of the combustion gases.

Abstract: One aspect of the disclosure provides a termination for use with a furnace. The termination, in one embodiment, includes a face plate including an exhaust region and an air supply region, the face plate having a front surface and an opposing back surface. The termination, in this embodiment, further includes an exhaust termination portion extending from the back surface in the exhaust region, the exhaust termination portion capable of engaging a terminal end of a variety of different size exhaust conduits associated with a furnace. The termination, in this embodiment, further includes an opening extending through the face plate in the exhaust region, the opening aligned with the exhaust termination portion.

Abstract: A heating system operates in supplemental mode to carry water from a hot water supply of the water heater to a heat exchanger within an air passage in the furnace. A water return passage returns the water from the air passage back to the water heater. Air within the air passage passes through the heat exchanger and is heated from the water within. The water then returns to the water tank through a water return passage. A supplemental thermostat is connected to the system to control an air circulator for the furnace without requiring the furnace to be activated. The furnace will turn on and heat the air only if supplemental mode is not sufficient to maintain the desired temperature.

Abstract: An integrated heating unit operates in a first heating mode, in which the heat of combustion gases is transferred to return air, and a second heat recovery mode, in which the heat of exhaust air is transferred to fresh air. The heating unit of the present invention utilizes the same heat exchanging unit and fans to transfer the heat from the combustion gases to the return air and to transfer heat from the exhaust air to the fresh air. The exhaust air is recovered from a select group of rooms, e.g. kitchens and bathrooms. A secondary heater can also be provided in the integrated unit in the form of a fireplace for providing an alternate or an additional source of the combustion gases.

Abstract: The present invention relates to a combined furnace and air recovery system. The system is comprised of a furnace housing having an inlet opening for connection to a cold air return duct and an outlet opening connected to a heating duct. A negative pressure compartment is located within the housing and is in communication with the inlet opening. A positive pressure compartment is also located within the housing and is in communication with the outlet opening. A fan is provided, communicating between the negative pressure compartment and the positive pressure compartment. a heating unit is located within the positive pressure compartment.

Abstract: A heavy gas expeller assembly to be connected to a furnace assembly to collect, direct, and expel harmful heavy gases and fluids, including radon gas, from adjacent a support floor. The heavy gas expeller assembly includes 1) a gas collector duct member connected to an exhaust gas duct assembly from the furnace assembly; and 2) an outside air inlet duct member to transfer fresh outside air into a return air duct member connected to the furnace assembly to replace the air and heavy gases that are to be expelled through an exhaust fluid duct assembly connected to the furnace assembly.

Abstract: A heating and ventilation unit has a ceramic heat wheel rotatable within a housing between first and second plenums through which fresh and stale air, respectively, are forced to pass in a hot air ventilation system. The heat wheel is made of cordierite material such as is used in catalytic conversion systems for automobiles. It is formed with non-communicating and axially-extending parallel pores having a pore density of 62 pores per sq. cm. As it rotates the heat wheel transfers to the fresh air both the heat generated by a gas burner in the second plenum, and also low grate heat contained in the stale air. The burner is housed within a combustion housing by means of which the combustion gases are confined to a generally D-shaped area of the heat wheel.

Abstract: A heating and ventilating system has a space heating device, in which heat is generated by combustion of a fuel, and which heats air for a building. A heat exchanger has one side through which exhaust air from the building flows to the exterior. Through the other side of the heat exchanger, fresh, makeup air for the building is supplied, and this may pass through the heater. An exhaust conduit from the heater, for combustion products, opens into the exhaust air line connected to the one side of the heat exchanger. This enables heat to be extracted from air leaving the building and further heat to be extracted from the combustion products, this heat being transferred to the incoming air in the heat exchanger.

Abstract: In a building an automatically controlled supplemental duct system causes circulation of warm air from the attic space during the heating season and cool air from the basement space during the cooling season when favorable temperature differences exist between said spaces and the internal space which is to be thermally controlled. Absent said favorable temperature differences, a conventional forced air delivery heating - cooling system operates in the conventional manner.

Abstract: A furnace shell has a fire pot centrally located therein, the walls of the shell and fire pot being spaced to form a fluid heat transfer chamber therebetween. Heat transfer is effected between the pot and the chamber to heat the fluid medium in the chamber. The shell is located in an interior to be heated, such as a building or home, including mobile and motor homes. An inlet conduit has a first end exteriorly positioned of the building interior and a second end substantially pneumatically sealed from the interior and in fluid communication with the fire pot enclosure to provide combustion supporting fluid exclusively from the exterior. A flue has a first end positioned exteriorly of said interior and a second end positioned in the upper portion of the fire pot enclosure to conduct combustion gases to the exterior. The flue is pneumatically sealed from the interior to prevent combustion gases from entering the interior.

Abstract: A heated air distribution system for a forced air heating system of a home or the like for distributing heated air preferably from a higher heated area to a lower heated area. The heated air distribution system utilizes the air return ducts of the forced air heating system which are common to the higher and lower heated areas. The heated air distribution system comprises an air forcing device coupled to the air return ducts for forcing heated air from the higher heated area through the air return ducts to the lower heated areas. This equalizes the temperatures of the air in the two areas, prevents overheating of the higher heated area and conserves energy.