ClassID:

157907

F24D17/02 - CPC Classification

Classification description:

Domestic hot-water supply systems using heat pumps

Recent Application in this class:
#1
20260036352
2026-02-05

DEFROST SYSTEMS AND METHODS FOR HEAT PUMP WATER HEATERS

#2
20250362034
2025-11-27

WASTEWATER HEAT PUMP SYSTEM

#3
20250354719
2025-11-20

WATER HEATING SYSTEM

#4
20250347426
2025-11-13

AIR TO WATER HEAT PUMP SYSTEM HAVING OPTIMIZED OPERATION

#5
20250341351
2025-11-06

HEAT PUMP, SYSTEMS, AND METHODS FOR OPERATING THE SAME

#6
20250290644
2025-09-18

Heat Pump Technology with Refrigerant-Based Thermal Storage

#7
20250271176
2025-08-28

WATER HEATING SYSTEM AND DETERMINATION METHOD OF TANK CAPACITY IN WATER HEATING SYSTEM

#8
20250264248
2025-08-21

LOW-EMISSIONS HEATING, COOLING, AND HOT WATER SYSTEM

#9
20250251144
2025-08-07

COMBI HEATING SYSTEM AND CONTROL METHOD

#10
20250244056
2025-07-31

ENERGY EFFICIENT HEATING/COOLING MODULE

#11
20250224132
2025-07-10

COMBINED HEATING AND COOLING SYSTEM

#12
20250216090
2025-07-03

THERMAL STORAGE SYSTEM AND INFORMATION PROCESSING APPARATUS

#13
20250129947
2025-04-24

SYSTEM AND METHOD FOR HEATING OR COOLING EMPLOYING HEAT PUMP

#14
20250116426
2025-04-10

APPARATUS AND METHODS FOR HEATING WATER WITH REFRIGERANT FROM AIR CONDITIONING SYSTEM

#15
20250102153
2025-03-27

HOT-WATER SUPPLY APPARATUS

#16
20250075940
2025-03-06

WATER HEATER APPLIANCE AND HEAT TRANSFER ASSEMBLY

#17
20250027659
2025-01-23

HEAT PUMP APPARATUS

#18
20240401818
2024-12-05

THERMAL BATTERY HEAT TRANSFER COIL

#19
20240377104
2024-11-14

HOT WATER SUPPLY APPARATUS

#20
20240230166
2024-07-11

WATER TO AIR SWITCHING FLOW HEATER CHILLER

#21
20240201714
2024-06-20

Methods and systems and apparatus to support reduced energy and water usage

#22
20240200827
2024-06-20

HEATING SYSTEM

#23
20240183582
2024-06-06

HEAT PUMP WATER HEATER

#24
20240167728
2024-05-23

HOT WATER SUPPLY APPARATUS AND CONTROL METHOD FOR HOT WATER SUPPLY APPARATUS

#25
20240151431
2024-05-09

HOT WATER SUPPLY TANK

#26
20240151407
2024-05-09

THERMAL SYSTEM

#27
20240142146
2024-05-02

Modular Cold Climate Heat Pump System with Multi-Segment Heat Exchanger

#28
20240133591
2024-04-25

WATER TO AIR SWITCHING FLOW HEATER CHILLER

#29
20240102693
2024-03-28

HYBRID WATER HEATER

#30
20240102671
2024-03-28

Methods and systems for performing a heat pump defrost cycle

#31
20240102670
2024-03-28

METHOD FOR OPERATING A HEAT PUMP

#32
20240093947
2024-03-21

Energy storage arrangement and installations

#33
20240093882
2024-03-21

HOT WATER SUPPLY

#34
20240053072
2024-02-15

DEFROST SYSTEMS AND METHODS FOR HEAT PUMP WATER HEATERS

#35
20240044521
2024-02-08

METHODS AND SYSTEMS FOR PREDICTIVELY PREPARING WATER PROVISION SYSTEM

#36
20240044520
2024-02-08

Methods and systems and apparatus to support reduced energy and water usage

#37
20240044518
2024-02-08

Methods and systems for modulating energy usage

#38
20240035717
2024-02-01

THERMAL ENERGY STORAGE INTEGRATED HEAT PUMP

#39
20240011669
2024-01-11

INSTANTANEOUS HOT WATER APPLIANCE

#40
20230375281
2023-11-23

ENERGY STORAGE ARRANGEMENTS AND INSTALLATIONS INCLUDING SUCH ENERGY STORAGE ARRANGEMENTS

#41
20230332807
2023-10-19

Storage source and cascade heat pump systems

#42
20230324052
2023-10-12

Direct current electric on-demand water heater

#43
20230314043
2023-10-05

Low-emissions heating, cooling and hot water system

#44
20230280046
2023-09-07

AN ENERGY SYSTEM FOR SUPPLY OF HOT WATER

#45
20230266019
2023-08-24

A HEATING SYSTEM

#46
20230148376
2023-05-11

Heating System, A Method, A Computer Program, A Computer-Readable Medium, A Control Device And A Use Of Such A Heating System

#47
20230130780
2023-04-27

Thermal energy storage integrated heat pump

#48
20230106610
2023-04-06

CONSTANT-TEMPERATURE WATER SUPPLY SYSTEM EMPLOYING CARBON DIOXIDE HEAT PUMP, AND CONTROL METHOD THEREFOR

#49
20230023068
2023-01-26

FEED WATER SUPPLEMENTARY THERMAL EXCHANGE APPARATUS, SYSTEM AND METHOD

#50
20230003435
2023-01-05

METHOD OF DEFROSTING A HEAT PUMP DEVICE AS WELL AS A HEAT PUMP DEVICE

#51
20220373193
2022-11-24

Instantaneous hot water heat pump

#52
20220357053
2022-11-10

HEAT PUMP HUMAN WASHING APPLIANCE

#53
20220316778
2022-10-06

Defrost systems and methods for heat pump water heaters

#54
20220235945
2022-07-28

Hot water supply apparatus

#55
20220221163
2022-07-14

Water heater with hardness detection system

#56
20220205686
2022-06-30

Storage source and cascade heat pump systems

#57
20220196252
2022-06-23

Hot water unit supply control systems and methods

#58
20220146147
2022-05-12

AIR HEATING AND POTABLE WATER SYSTEM HAVING A WATER HEATER AND A HYDRONIC AIR HANDLER

#59
20220136712
2022-05-05

COMBINED SPACE AND WATER HEATING SYSTEMS

#60
20220136711
2022-05-05

Thermal solar assisted water heating system

#61
20220074604
2022-03-10

Heating system

#62
20220057126
2022-02-24

WATER HEATER AND METHOD OF OPERATING SAME

#63
20220018480
2022-01-20

Controller, method of operating a water source heat pump and a water source heat pump

#64
20210396397
2021-12-23

REFRIGERATING MACHINE, HOT WATER HEAT PUMP, OPERATING METHOD AND PROGRAM

#65
20210341186
2021-11-04

PLATE-TYPE HEAT EXCHANGER, HEAT PUMP DEVICE, AND HEAT-PUMP-TYPE COOLING AND HEATING HOT-WATER SUPPLY SYSTEM

#66
20210318038
2021-10-14

HEATING SYSTEM

#67
20210270471
2021-09-02

Direct current electric on-demand water heater

#68
20210262708
2021-08-26

Heat pump and method for controlling operation of boiler based on temperature of fluid

#69
20210262655
2021-08-26

SUPPLY-WATER WARMING SYSTEM

#70
20210239370
2021-08-05

Heat pump and method for controlling compressor based on operation of boiler

#71
20210239328
2021-08-05

Water heater and control method therefor

#72
20210123609
2021-04-29

HEATING GROUP

#73
20210108829
2021-04-15

Apparatus and methods for heating water with refrigerant from air conditioning system

#74
20200400319
2020-12-24

Hot water supply apparatus

#75
20200393202
2020-12-17

Hot water storage tank and a diffuser

#76
20200386444
2020-12-10

Hybrid water heater

#77
20200340663
2020-10-29

Feed water supplementary thermal exchange apparatus, system and method

#78
20200309385
2020-10-01

Self-powered water heater

#79
20200309384
2020-10-01

Method and apparatus for reduction of water re-evaporation in a dedicated dehumidifier/water heater

#80
20200309383
2020-10-01

Heating and hot-water supply apparatus

#81
20200292179
2020-09-17

Heating and hot-water supply apparatus

#82
20200208848
2020-07-02

Waste-liquid heat recovery

#83
20200200397
2020-06-25

Water heater with hardness detection system

#84
20200191435
2020-06-18

OUTDOOR UNIT OF HEAT-PUMP HOT WATER DISPENSER

#85
20200191281
2020-06-18

Electric mixing valve with dual flowpath metering ball

#86
20200088336
2020-03-19

Controller, method of operating a water source heat pump and a water source heat pump

#87
20200056846
2020-02-20

Recovery system and method for recovery of thermal energy from waste water

#88
20190360731
2019-11-28

Refrigerant transfer control in multi mode air conditioner with hot water generator

#89
20190346187
2019-11-14

System and method for providing supplemental heat to a refrigerant in an air-conditioner

#90
20190338962
2019-11-07

A HEATING SYSTEM AND A HEATING METHOD

#91
20190331372
2019-10-31

Multi-staged water manifold system for a water source heat pump

#92
20190310691
2019-10-10

CRYPTO CURRENCY MINING SYSTEM CAPABLE OF PRODUCING HOT WATER

#93
20190301750
2019-10-03

HEAT PUMP USE APPARATUS

#94
20190293303
2019-09-26

Intelligent hot water heating system with stratified temperature-heating control storage tank

#95
20190264927
2019-08-29

Indoor unit for heat pump use apparatus and heat pump use apparatus including the same

#96
20190257531
2019-08-22

System for air-conditioning and hot-water supply

#97
20190249901
2019-08-15

Apparatus for water temperature regulation

#98
20190249900
2019-08-15

Water thermoregulation device having an electric heat pump

#99
20190128565
2019-05-02

Hybrid water heater

#100
20190107294
2019-04-11

Hot-water supply system, water heater, and control method for water heater

#101
20190086102
2019-03-21

Hot-water supply unit and hot-water supply system

#102
20190072284
2019-03-07

Heat-pump air-conditioning hot-water supply device

#103
20190055932
2019-02-21

Thermodynamic boiler with thermal compressor

#104
20180356130
2018-12-13

Cascading heat recovery using a cooling unit as a source

#105
20180347846
2018-12-06

Air conditioning apparatus

#106
20180328596
2018-11-15

Heat pump hot water supply apparatus

#107
20180252434
2018-09-06

Apparatus and methods for heating water with refrigerant from air conditioning system

#108
20180238561
2018-08-23

Heat pump water heater

#109
20180209689
2018-07-26

Heat utilizing apparatus

#110
20180187928
2018-07-05

System and method for reusing waste heat of a transcritical refrigeration system

#111
20180172287
2018-06-21

Heating installation

#112
20180156511
2018-06-07

Temperature-adjusting fluid supply apparatus

#113
20180128411
2018-05-10

Controller, method of operating a water source heat pump and a water source heat pump

#114
20180080660
2018-03-22

Method and apparatus for reduction of water re-evaporation in a dedicated dehumidifier/water heater

#115
20180051894
2018-02-22

Heat-pump equipment

#116
20180010822
2018-01-11

Apparatus and methods for heating water with refrigerant and phase change material

#117
20170370622
2017-12-28

Two-stage heating geothermal system using geothermal energy

#118
20170248373
2017-08-31

Plate heat exchanger and heat pump outdoor unit

#119
20170234550
2017-08-17

Combined hot water and air heating and conditioning system including heat pump

#120
20170227262
2017-08-10

Heat pump apparatus with refrigerant leakage protection

#121
20170184349
2017-06-29

Heat exchanger and hot water apparatus

#122
20170067654
2017-03-09

Scale trapping unit and water heater

#123
20170045237
2017-02-16

Tank for energy recovery

#124
20170037327
2017-02-09

Method, apparatus and chemical products for treating petroleum equipment

#125
20170030594
2017-02-02

Fluid heating and/or cooling system and related methods

#126
20170023263
2017-01-26

Heating and hot water supply system

#127
20160320093
2016-11-03

Apparatus and methods for pre-heating water with air conditioning unit or heat pump

#128
20160265707
2016-09-15

Controller, method of operating a water source heat pump and a water source heat pump

#129
20160097546
2016-04-07

HEAT PUMP WATER HEATER APPLIANCE

#130
20160084540
2016-03-24

Adsorptive heat transformation arrangement

#131
20160061508
2016-03-03

Apparatus and method for hybrid water heating and air cooling and control thereof

#132
20160061502
2016-03-03

Apparatus and method for hybrid water heating and air cooling and control thereof

#133
20160033166
2016-02-04

Thermal recovery system and method

#134
20160010890
2016-01-14

Heat pump water heating system

#135
20150377496
2015-12-31

Heat pump water heater

#136
20150377407
2015-12-31

Vacuum heat insulator, heat retaining tank including same, heat retaining structure, and heat pump water heater

#137
20150354833
2015-12-10

Renewable energy hot water heater with heat pump

#138
20150330675
2015-11-19

Heat pump system

#139
20150308699
2015-10-29

Household appliance and method of operating a household appliance

#140
20150241093
2015-08-27

Water heater appliances and methods for operating same

#141
20150241087
2015-08-27

Gas-fired water heater with separable heat exchanger or detachably connected external water heater

#142
20150225258
2015-08-13

Ion exchanger, water treatment device provided with same, and hot water supply device

#143
20150198338
2015-07-16

Energy exchange system and method

#144
20150188388
2015-07-02

Facility for transforming heat energy

#145
20150159960
2015-06-11

Heating apparatus

#146
20150159913
2015-06-11

Hot water supply system

#147
20150159885
2015-06-11

Solar energy system

#148
20150114019
2015-04-30

Heat pump system using latent heat

#149
20150113987
2015-04-30

Integrated renewable energy and asset system

#150
20150083362
2015-03-26

District public water supply pipe network system compatible for source side water for ground source heat pump system and reclaomed water

#151
20150075214
2015-03-19

Liquefier for a heat pump and heat pump

#152
20150059379
2015-03-05

Feed water heating system

#153
20150047579
2015-02-19

Heat recovery

#154
20150034073
2015-02-05

Hot water supply system and method thereof

#155
20140326013
2014-11-06

Hot water supply apparatus associated with heat pump

#156
20140326012
2014-11-06

Hot water supply apparatus associated with heat pump

#157
20140326011
2014-11-06

Hot water supply apparatus associated with heat pump

#158
20140326004
2014-11-06

Method for managing a refrigerant charge in a multi-purpose HVAC system

#159
20140291411
2014-10-02

Heat pump heating and hot-water system

#160
20140263682
2014-09-18

Retrofit hot water system and method

#161
20140262146
2014-09-18

Cascading heat recovery using a cooling unit as a source

#162
20140260392
2014-09-18

Apparatus and methods for heating water with refrigerant from air conditioning system

#163
20140260358
2014-09-18

Apparatus and methods for pre-heating water with air conditioning unit or heat pump

#164
20140238063
2014-08-28

SANITATION COMPARTMENT FOR RECOVERING THE HEAT FROM HOT WASTEWATER DURING BATHING

#165
20140174117
2014-06-26

Air conditioning apparatus

#166
20140116072
2014-05-01

Heat pump apparatus

#167
20140033993
2014-02-06

HYDROGEN GAS BUILDUP PREVENTION IN HOT WATER HEATERS

#168
20140027524
2014-01-30

Hot water supply system

#169
20140020637
2014-01-23

Apparatus for using cast-off heat to warm water from household water heater

#170
20130306301
2013-11-21

Heat pump apparatus and control method for heat pump apparatus

#171
20130270157
2013-10-17

Method, apparatus and chemical products for treating petroleum equipment

#172
20130269380
2013-10-17

Refrigeration cycle device

#173
20130175160
2013-07-11

Electrolysis device and heat-pump-type water heater provided with same

#174
20130133361
2013-05-30

Air-conditioning apparatus

#175
20130118193
2013-05-16

Heat pump air-conditioning system and method for controlling the same

#176
20130098102
2013-04-25

Heat pump system

#177
20130098096
2013-04-25

Heat pump system

#178
20130091883
2013-04-18

Controller, method of operating a water source heat pump and a water source heat pump

#179
20130025309
2013-01-31

ENERGY-SAVING HOT WATER-HEATING DEVICE AND SYSTEM APPLICABLE TO THE SAME

#180
20130025300
2013-01-31

Heat pump water heater

#181
20130019624
2013-01-24

Air-conditioning and hot water supply combination system

#182
20130014530
2013-01-17

HEAT RECOVERY SYSTEM

#183
20130000699
2013-01-03

Energy generation system

#184
20120324923
2012-12-27

Heat pump and method for controlling the same

#185
20120318823
2012-12-20

HOT WATER SUPPLY DEVICE AND COLD/HOT WATER DISPENSER USING THE SAME

#186
20120312045
2012-12-13

WATER SUPPLY APPARATUS

#187
20120312044
2012-12-13

THERMAL RECYCLING SYSTEM

#188
20120272948
2012-11-01

Heat storage system

#189
20120261102
2012-10-18

Thermosyphon heat recovery

#190
20120255507
2012-10-11

Hot water supply system

#191
20120255320
2012-10-11

Air-conditioning hot-water supply combined system

#192
20120247721
2012-10-04

WALL ASSEMBLY WITH PHOTOVOLTAIC PANEL

#193
20120235478
2012-09-20

Operation planning method, and heat pump hot water supply and heating system operation method

#194
20120222631
2012-09-06

Gas-fired water heater with separable heat exchanger or detachably connected external water heater

#195
20120205090
2012-08-16

Heat pump hot-water supply system

#196
20120180511
2012-07-19

Energy system with a heat pump

#197
20120180508
2012-07-19

Air-conditioning hot-water supply system, and heat pump unit

#198
20120159980
2012-06-28

DEVICE FOR RECOVERING HEAT FROM WASTEWATER, THERMAL SYSTEM INCLUDING SUCH A DEVICE, AND METHOD

#199
20120152488
2012-06-21

Underground thermal battery storage system

#200
20120151950
2012-06-21

Heat transfer system

#201
20120145095
2012-06-14

Residential heat pump water heater

#202
20120144853
2012-06-14

SYMMETRICAL INTERMEDIATE STORAGE MEANS FOR HEAT PUMPS WITH CYCLICAL DRAINAGE INTO A MAIN SYSTEM

#203
20120111032
2012-05-10

Heat pump supply apparatus having a combined use with an air conditioner

#204
20120102991
2012-05-03

Heat pump type water heating apparatus

#205
20120090559
2012-04-19

Economically-operated, dual-energy hot water supply system and method of operating the same

#206
20120090341
2012-04-19

Water heater and control method therefor

#207
20120055177
2012-03-08

Air conditioner and control method thereof

#208
20120043390
2012-02-23

Heat pump

#209
20120042673
2012-02-23

HEAT PUMP

#210
20120036876
2012-02-16

Heat pump system

#211
20110315093
2011-12-29

Fluid heating system, fluid heating method, fluid heating control system, control apparatus, and control method

#212
20110315091
2011-12-29

Hot-water supply system

#213
20110314856
2011-12-29

Low-pressure high-efficiency aqua ammonia absorption heat pump system for BCHP residential use

#214
20110314848
2011-12-29

Combined air-conditioning and hot-water supply system

#215
20110311209
2011-12-22

Transparent fluid recirculation reservoir system

#216
20110303165
2011-12-15

Hot-water supply system

#217
20110289952
2011-12-01

HOT WATER SUPPLY APPARATUS ASSOCIATED WITH HEAT PUMP

#218
20110289950
2011-12-01

Hot water supply apparatus associated with heat pump

#219
20110283726
2011-11-24

HOT WATER SUPPLY DEVICE ASSOCIATED WITH HEAT PUMP AND METHOD FOR CONTROLLING THE SAME

#220
20110283725
2011-11-24

Hot water supply apparatus associated with heat pump

#221
20110277494
2011-11-17

HEAT EXCHANGER AND HEAT PUMP TYPE HOT WATER SUPPLY APPARATUS EQUIPPED WITH SAME

#222
20110259027
2011-10-27

Heat pump type hot water supply apparatus

#223
20110259025
2011-10-27

HEAT PUMP TYPE SPEED HEATING APPARATUS

#224
20110218683
2011-09-08

Hybrid heating system

#225
20110203303
2011-08-25

HEATING SYSTEM WITH OPTIMIZED RECOVERY OF WASTE WATER HEAT

#226
20110154838
2011-06-30

HEAT EXCHANGE SYSTEM

#227
20110139259
2011-06-16

Storage hot water supplying apparatus, hot water supplying and space heating apparatus, operation control apparatus, operation control method, and operation control program

#228
20110120179
2011-05-26

HEAT PUMP TYPE COOLING/HEATING APPARATUS

#229
20110107789
2011-05-12

Liquefier for a heat pump and heat pump

#230
20110076190
2011-03-31

HEAT PUMP TYPE HOT-WATER SUPPLY DEVICE AND HOT WATER STERILIZATION METHOD

#231
20110067418
2011-03-24

Apparatus and method for fluid heating and associated systems

#232
20110036110
2011-02-17

REFRIGERATION APPARATUS

#233
20110023517
2011-02-03

FACILITY FOR PRODUCING SANITARY HOT WATER FOR CONGREGATE HOUSING

#234
20110016897
2011-01-27

AIR CONDITIONING-HOT WATER SUPPLY COMBINED SYSTEM

#235
20100326638
2010-12-30

Waste heat recycling and gain system

#236
20100326111
2010-12-30

PLANT FOR PRODUCING SANITARY HOT WATER

#237
20100300135
2010-12-02

Refrigerating apparatus

#238
20100288482
2010-11-18

Safety heat exchanger for combining a heat pump with a device of a public drinking water supply facility

#239
20100282435
2010-11-11

Air-conditioning hot-water supply complex system

#240
20100281899
2010-11-11

Gas-fired heat pump water heater

#241
20100257882
2010-10-14

Hybrid water heating system

#242
20100209084
2010-08-19

Residential heat pump water heater

#243
20100170655
2010-07-08

Air Supply Unit

#244
20100155312
2010-06-24

Heat pump-type hot-water supply device

#245
20100148502
2010-06-17

Pipe joint, refrigeration device, heat pump hot water supply device, closing valve, water supply piping, method of connecting piping, and in-the field piping method

#246
20100132914
2010-06-03

HOT WATER SUPPLY DEVICE FOR HOUSE

#247
20100126705
2010-05-27

HEATING AND HOT WATER SUPPLY APPARATUS

#248
20100117843
2010-05-13

HEAT PUMP TYPE HOT WATER SUPPLY APPARATUS

#249
20100050675
2010-03-04

Heat pump system

#250
20100031953
2010-02-11

Hybrid Water Heating System

#251
20090293515
2009-12-03

Economized refrigerant vapor compression system for water heating

#252
20090211282
2009-08-27

Hot water supply system

#253
20090120124
2009-05-14

Thermal Energy Transfer Unit and Method

#254
20090120110
2009-05-14

Refrigeration System and Method with Controllable Heat Recovery

#255
20090113911
2009-05-07

Hot Water Supply Device

#256
20090084329
2009-04-02

Malfunction detection device for hot water supplier

#257
20090026281
2009-01-29

Energy conservation system for using heat from air conditioning units to heat water supply lines

#258
20080230620
2008-09-25

Hot Water Supply Apparatus

#259
20080184724
2008-08-07

Heat transfer system and associated methods

#260
20080142094
2008-06-19

Hot Water Device for Bathtub

#261
20080120986
2008-05-29

Water supply system

#262
20080098968
2008-05-01

Heat recovery and heat dissipated from the heat harvesting coil

#263
20080092568
2008-04-24

Hot-water supply apparatus

#264
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