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8165726 Water heater energy savings algorithm for reducing cold water complaints  
An energy savings water heater is described. The water heater is controlled by an energy savings algorithm that uses one or more of a variable setpoint differential, a variable setback threshold,...
8152995 Arrangements to reduce hardness of water in a hot water system  
Hot water pipes, in areas with hard water, tend to fill with scale until they no longer pass enough water. De-scaling water pipes with acid is dangerous, expensive and damages the pipes. Ion...
8117996 Water heater  
A water heater capable of suppressing an increase in the combustion air temperature exiting the heater and the generation of nitrogen oxide within an easy structure is provided. In the water...
8118239 Potable water heater  
A water heater for heating potable water used in a boat or vehicle. Exhaust heated by the burner of the water heater is discharged from the burner and is conveyed through an exhaust duct which...
8111980 Water heater and method of controlling the same  
A water heater including a water inlet line having an inlet opening that introduces cold water to a tank, a water outlet line having an outlet opening that withdraws heated water from the tank, and...
8087388 Water heater  
The object is to provide a water heater capable of efficiently transmitting radiation heat of a burner to hot water in a hot water storage chamber with improved thermal efficiency. In the water...
8008603 Boiler protection apparatus and method  
Apparatus and methods for protecting a boiler and heating system from damage comprising a control board having inputs and outputs, a processor having inputs and outputs, at least one ambient sensor...
7997236 Water heater and a method of operating same  
A water heater (10) including a tank (12) adapted for mounting with its longitudinal axis substantially vertical and a duct (32) adapted for mounting with its longitudinal axis substantially...
7836856 Water heater with condensing flue  
A water heater has a burner positioned below a vertical centrally located flue with heat exchange capacity enhanced by a multiplicity of rectangular metal fins which are welded on the inside of the...
7814868 Fuel-fired, power vented high efficiency water heater apparatus  
A fuel-fired water heater has a draft inducer fan assembly with a housing having an inlet for receiving hot combustion gases discharged from the water heater, and an outlet for discharging the...
7727494 Child care storage having steam sterilizing apparatus  
A child care storage having a steam sterilizing apparatus, wherein the steam sterilizing apparatus includes an outer tub defined by walls of a steam sterilizing compartment; a hollow upstanding...
7634977 Gas water heater  
A gas water heater includes a power burner, a flue tube, an exhaust plenum, and a draft hood. The flue tube includes a portion that describes at least a 360° loop. Products of combustion are ...
7603967 Water heater with flammable vapor sensor  
A water heater including a water container, a combustion chamber adjacent the water container, a burner associated with the combustion chamber, a blower located to receive combustion products...
7559293 High efficiency water heater  
A flue system is provided for a water heater having improved heat exchange efficiency. The flue system includes an upstream heat exchange portion having at least one substantially vertical flue...
7552727 Stationary, solar-powered boiler for generating steam  
A boiler for generating steam has a substantially enclosed housing configured to contain an amount of water to be boiled, the housing having one or more thermally conductive sidewalls which form a...
7506616 Dual fuel air conditioning circuit-based water heater  
A fuel-fired water heater is coupled to an electrically powered air conditioning refrigerant circuit in a manner permitting water to be heated with either combustible fuel or electricity. In one...
7503288 Plastic boiler without flange  
A boiler for heating a flow capable medium, especially for heating water, comprising a boiler housing made from plastic and a heater protruding through a mounting hole in the boiler housing into...
7441558 Active thermal energy storage system  
An active thermal energy storage system is disclosed which uses an energy storage material that is stable at atmospheric pressure and temperature and has a melting point higher than 32 degrees F....
7431568 Draft inducer having a backward curved impeller  
A draft inducer is disclosed. The draft inducer includes an impeller having one or more backward curved blades. The impeller is coupled to a motor which is preferably a DC motor. The DC motor...
7421784 Method of manufacturing a water heater with a leak detection system  
An original equipment manufacturer water heater including a water tank including an inlet and an outlet, means for heating water in the water tank, a base pan at least partially supporting the...
7392766 Temperature and pressure relief apparatus for water heater  
A liquid heating appliance, representatively a water heater, is provided with protective apparatus for preventing rupture of its liquid storage tank portion caused by overheating of pressurized...
7387721 Apparatus and system for removing scale causing chemicals in hot water systems  
Hot water pipes, in areas with hard water, tend to fill with scale until they no longer pass enough water. De-scaling water pipes with acid is dangerous, expensive and damages the pipes. Ion...
7370648 Water heater system  
A housing has a top, a bottom and side walls. A liner has a top, a bottom, and side walls. The liner is fabricated of glass. A space is provided between the liner and housing. Insulation material...
RE40307 Inlet baffle for water heater  
A baffle for slowing the incoming water flow into a booster heating tank so that the turbulence in the water tank is minimized. The baffle consists of an inner cap and outer cap which are...
7360535 Hot water apparatus  
A hot water apparatus is provided in which heat recovery is performed as much as possible allowing condensate to be generated and excellent heat efficiency is achieved without providing a plurality...
7360506 Low CO water heater  
A water heater including a water container, a combustion chamber adjacent the water heater, a burner associated with the combustion chamber and arranged to combust fuel to heat water in the water...
7346274 Water heater and method of controlling the same  
A water heater including a water inlet line having an inlet opening that introduces cold water to a tank, a water outlet line having an outlet opening that withdraws heated water from the tank, and...
7299768 Gas-fired water heating apparatus  
The water heating apparatus has an upright cylindrical thermally insulated storage tank, an axially extending exhaust gas pipe passing centrally through the storage tank and a combustion chamber...
7299769 Condensing gas fired water heater  
A water heater is shown having a closed metal tank with an upwardly mounted combustion chamber and burner/blower assembly. Curved fire tubes convey the products of combustion from the chamber to an...
7159540 Water heater with air intake and exhaust system  
A water heater including a water container; a combustion chamber adjacent the water container; a burner associated with the combustion chamber; a blower assembly located to receive combustion...
7040258 Low NOx water heater with serpentined air entry  
A fuel-fired low NOx water heater extending along a vertical axis has a radiant fuel burner disposed in its combustion chamber. The entire burner combustion air quantity is delivered to the burner...
7001524 Method for removing scale causing chemicals in hot water systems  
Hot water pipes, in areas with hard water, tend to fill with scale until they no longer pass enough water. De-scaling water pipes with acid is dangerous, expensive and damages the pipes. Ion...
6951191 Water heater provided with compact design and hot water temperature for human body  
A water heater includes an exhaust hood, a heat exchange module, a main heat valve and a control valve extending downwardly in turn between a case and a plate. Inlet and outlet heads are installed...
6923148 Combustion chamber with high temperature protective coating  
A combustion chamber for a gas-fired hot water heater comprises a top wall which is defined by a bottom wall of an inner tank. A flue extends through the inner tank bottom wall. A circumferential...
6895902 Water heater with a flame arrester  
A water heater is arranged with the hot water storage chamber R1 at the top and the combustion chamber R2 at the bottom within the body 11 which is a container. The combustion chamber R2 is...
6776154 Solar energy system with direct absorption of solar radiation  
A solar energy system comprises a solar absorber in the form of a solar boiler tank with a lower working liquid region having a liquid inlet and filled with a working liquid capable of boiling...
6745724 Water heater having flue damper with airflow apparatus  
A water heater includes a water tank adapted to contain water; a flue extending through the water tank and having a first end communicating with the water heater's combustion chamber for the flow...
6739517 Non-circulating tank and kit for use with liquid heating unit  
A tank for use with a liquid heating vessel of a hydronic radiant heating system to assist in the simultaneous sealing and venting of air from the system where the heating vessel has a flue for...
6725811 Water heater with low NOx fiber matrix burner  
A water heater having improved operating characteristics and lower costs of manufacturing is described. The water heater has an unified combustion chamber and burner construction with a ceramic...
6715451 Fuel-fired heating appliance with combustion air shutoff system having frangible temperature sensing structure  
A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a...
6698385 Combustion chamber shield for hot water heaters  
A shield for a combustion chamber of a hot water heater is described. The combustion chamber is a sealed or not combustion chamber and the metal heat shield encircles and is spaced about the burner...
6626133 Explosion protection sensor for gas appliances  
A device for sensing a dangerous condition includes a sensor that provides a signal when a dangerous condition is sensed by the sensor. A power source is provided which is in communication with the...
6622661 Fuel-fired heating appliance with dilution air/flammable vapor bypass tube and elevated combustion air inlet  
A fuel-fired heating apparatus, representatively a forced draft or natural draft gas-fired water heater having a combustion chamber, is provided with a flammable vapor control system that...
6622660 Blower mixing tee  
An exhaust system for withdrawing a supply of exhaust gases from an exhaust flue of a heater and expelling the exhaust gases to atmosphere at a remote location that includes a mixing tee for mixing...
6591788 Rooftop water heater  
A water heater adapted to be mounted on the rooftop of a building includes a substantially cylindrical tank having a horizontally-oriented longitudinal axis. A U-shaped flue tube has a burner end...
6588377 Process and apparatus for recycling water in a hot water supply system  
A process and apparatus are provided for conserving water and heat energy in a hot water supply system. A holding tank is provided near the Point Of Use to capture unwanted cooled water. An...
6578530 Apparatus and method for feeding air to a water heater  
Combustible vapors from flammable materials spilled near a gas water heater can enter the water heater's combustion chamber and cause a serious fire or explosion. This problem can be avoided by...
6449429 Indirectly heating type of electric boiler apparatus  
Disclosed is an indirectly heating type of an electric boiler capable of operating at a high efficiency using less energy. The boiler comprises a rubber casing including a port for receiving a cool...
6446581 Flammable vapor resistant water heater with low NOx emissions  
A water heater including a water container, a combustion chamber adjacent the container, the combustion chamber having a side wall and at least one flame arrestor to admit air and extraneous fumes...
6446582 Fuel feedline and vapor barrier assembly  
An apparatus and method for extending a gas feedline through a vapor barrier enclosure simplifies and reduces the costs associated with manufacture and installation while establishing a seal...
Matches 1 - 50 out of 128 1 2 3 >