ClassID:

158311

F24F2011/0002 - CPC Classification

Classification description:

Control or safety arrangements for ventilation for admittance of outside air

Sub-classes:
Recent Application in this class:
#1
20250362045
2025-11-27

HVAC SYSTEM WITH CENTRALIZED CONTROL CONNECTED TO A FRESH AIR VENTILATION SYSTEM

#2
20250354713
2025-11-20

VENTILATION SYSTEM, INTEGRATED AIR CONDITIONING SYSTEM AND CONTROL METHOD THEREOF

#3
20250354395
2025-11-20

PRIVACY BOOTH

#4
20250271157
2025-08-28

VENTILATOR ASSEMBLY HAVING A VARIABLE FAN CONTROL FOR AIR FLOW IN AN AIR CONDITIONER

#5
20250264244
2025-08-21

HEAT TRANSFER SYSTEM

#6
20250230945
2025-07-17

LIBRARIES, SYSTEMS, AND METHODS FOR MINIMIZING AIR POLLUTION IN ENCLOSED STRUCTURES

#7
20250198645
2025-06-19

HVAC SYSTEM

#8
20250198637
2025-06-19

Venting for Enclosure Cooling

#9
20250198636
2025-06-19

VENTILATION OF AN OFFICE POD

#10
20250093068
2025-03-20

HVAC SYSTEM

#11
20240392999
2024-11-28

METHOD AND SYSTEM FOR CONTROLLING FRESH AIR VENTILATION OF AN AIR HANDLING UNIT OF AN HVAC SYSTEM

#12
20240361031
2024-10-31

SYSTEM AND METHOD TO CONTROL OPERATION OF AN HVAC SYSTEM FOR CONDITIONING INDOOR AIR OUALITY

#13
20240361026
2024-10-31

AIR CONDITIONER OUTDOOR UNIT AND VENTILATION METHOD USING SAME

#14
20240353122
2024-10-24

SECONDARY OUTSIDE AIR PATH FOR A HEAT PUMP

#15
20240344733
2024-10-17

Modulating Preheating Device for Energy Recovery Ventillation Systems

#16
20240344731
2024-10-17

MULTIFUNCTION ADAPTIVE FAN SYSTEM

#17
20240310066
2024-09-19

AIR QUALITY MONITORING AND MANAGEMENT SYSTEM AND METHOD OF CONTROLLING THE SAME

#18
20240210059
2024-06-27

SYSTEM AND METHOD FOR CONDITIONING AIR

#19
20240151421
2024-05-09

SYSTEM FOR DETECTING AND CLEANING INDOOR AIR POLLUTION

#20
20240151419
2024-05-09

INDOOR GAS EXCHANGE SYSTEM

#21
20240068694
2024-02-29

DYNAMIC VENTILATION CONTROL FOR A BUILDING

#22
20240060670
2024-02-22

Multifunction adaptive whole house fan system

#23
20230392808
2023-12-07

Cooling and heating methodology and systems

#24
20230332785
2023-10-19

System and method for conditioning air

#25
20230324071
2023-10-12

System for minimizing indoor infection risk and maximizing energy savings

#26
20230304692
2023-09-28

Dedicated outdoor air system with a plurality of modes of operation

#27
20230304684
2023-09-28

FRESH AIR VENTILATION DEVICE FOR AIR POLLUTION PREVENTION

#28
20230266035
2023-08-24

HEAT TRANSFER SYSTEM AND ENVIRONMENTAL CONTROL SYSTEM WITH HEAT TRANSFER SYSTEM

#29
20230266034
2023-08-24

HVAC system

#30
20230258343
2023-08-17

FRESH AIR PLENUM MODULE FOR A FAN COIL UNIT

#31
20230250980
2023-08-10

AIR BALANCER SYSTEM

#32
20230228447
2023-07-20

Air conditioner makeup air circulation

#33
20230213225
2023-07-06

AN ISOLATION CHAMBER

#34
20230194117
2023-06-22

AIR CONDITIONING VENTILATION SYSTEM

#35
20230191309
2023-06-22

METHOD AND SYSTEM FOR IMPROVED-EFFICIENCY AIR-CONDITIONING

#36
20230135260
2023-05-04

Air conditioning system

#37
20230103696
2023-04-06

DUAL-SOURCE INTAKE AIR-CONDITIONING SYSTEMS

#38
20230101146
2023-03-30

HEATING CONTROL DEVICE AND HEATING CONTROL PROGRAM

#39
20230063572
2023-03-02

Heat Pump-Based Water Harvesting Systems

#40
20220412588
2022-12-29

AUTOMATED COOLING SYSTEM FOR A BUILDING STRUCTURE

#41
20220364760
2022-11-17

Makeup air parallel flow energy recovery system atop air conditioner

#42
20220364751
2022-11-17

Multifunction adaptive whole house fan system

#43
20220364748
2022-11-17

Indoor air pollution prevention system

#44
20220333805
2022-10-20

HEAT EXCHANGE VENTILATOR

#45
20220325913
2022-10-13

CONTROL SYSTEM FOR MEDIUM-SIZED COMMERCIAL BUILDINGS

#46
20220243946
2022-08-04

Method and device for operating a ventilation system for air in an indoor space

#47
20220243944
2022-08-04

Variable airflow energy efficient HVAC systems and methods

#48
20220228763
2022-07-21

Air conditioning with recovery wheel, dehumidification wheel, cooling coil, and secondary direct-expansion circuit

#49
20220221184
2022-07-14

Dynamic ventilation control for a building

#50
20220205659
2022-06-30

Building ventilation apparatus and method

#51
20220178575
2022-06-09

VENTILATION SYSTEM, INTEGRATED AIR CONDITIONING SYSTEM AND CONTROL METHOD THEREOF

#52
20220178574
2022-06-09

System for minimizing indoor infection risk and maximizing energy savings

#53
20220178565
2022-06-09

Demand control ventilation with predictive humidity control

#54
20220163224
2022-05-26

Automated cooling system for a building structure

#55
20220155743
2022-05-19

SYSTEM AND METHOD OF ADVANCED DIGITAL ECONOMIZATION

#56
20220154965
2022-05-19

Designated outdoor air system for controlling temperature uniformity within a space

#57
20220118392
2022-04-21

TOWER TYPE AIR CLEANING DEVICE FOR OUTDOOR

#58
20220107109
2022-04-07

AIR CONDITIONING SYSTEM

#59
20220099521
2022-03-31

METHOD AND SYSTEM FOR MONITORING AIR LEAKS THROUGH A BUILDING ENVELOPE AND CONTROLLING A VENTILATION SYSTEM

#60
20220099322
2022-03-31

Cooling and heating methodology and systems

#61
20220090816
2022-03-24

MULTI-AIR CONDITIONER FOR HEATING, COOLING, AND VENTILATION

#62
20220090813
2022-03-24

OUTSIDE AIR TREATMENT DEVICE AND AIR CONDITIONING SYSTEM

#63
20220090807
2022-03-24

System and method using connected dampers for dehumidifying air

#64
20220090806
2022-03-24

System and method for conditioning air

#65
20220082285
2022-03-17

Multifunction adaptive whole house fan system

#66
20220082272
2022-03-17

Direct room economizer

#67
20220061361
2022-03-03

Peracetic acid monitoring and control system

#68
20220061273
2022-03-03

SYSTEM FOR ZONED-BASED SOLAR HEATING AND VENTILATION OF POULTRY STRUCTURES

#69
20220057106
2022-02-24

Film door belt fluid flow control system

#70
20220042693
2022-02-10

Venting for enclosure cooling

#71
20220023787
2022-01-27

Isolation ward structure

#72
20210381709
2021-12-09

System and method for commissioning fresh air intake control

#73
20210381706
2021-12-09

HVAC scrubber unit with building management system integration systems and methods

#74
20210356927
2021-11-18

Temperature control system and methods for operating same

#75
20210348791
2021-11-11

Multifunction adaptive whole house fan system

#76
20210333007
2021-10-28

HVAC system

#77
20210310685
2021-10-07

Air conditioning system

#78
20210310680
2021-10-07

Temperature differential based fan control

#79
20210310674
2021-10-07

Ventilation air conditioning system and outdoor air supply fan

#80
20210293441
2021-09-23

Heat transfer system and environmental control system with heat transfer system

#81
20210270478
2021-09-02

Additional control device, ventilation assembly, ventilation system, operating method for an additional control device, computer program product

#82
20210231325
2021-07-29

Multifunction adaptive whole house fan system

#83
20210172632
2021-06-10

Fresh air building and home ventilation apparatus and methodologies

#84
20210164687
2021-06-03

Opening and closing device, air duct assembly and air conditioner

#85
20210156589
2021-05-27

Air moving device

#86
20210156582
2021-05-27

Fresh air cooling and ventilating system

#87
20210140655
2021-05-13

Air handling system with integrated air treatment

#88
20210108814
2021-04-15

Communications between thermostat and rooftop unit of climate control system

#89
20210048208
2021-02-18

Demand control ventilation with predictive humidity control

#90
20210033296
2021-02-04

Autonomous device for measuring the characteristics of a fluid circulating in a conduit and system for controlling ventilation, air conditioning and/or heating using such a device

#91
20210003302
2021-01-07

Ventilation control device and ventilation system

#92
20200386429
2020-12-10

System and method for integrated control of supply fan

#93
20200378631
2020-12-03

Use of cooling system to heat air supply

#94
20200333036
2020-10-22

Fresh air distribution system for packaged terminal air conditioner

#95
20200298666
2020-09-24

Air conditioning system using fuel cell system

#96
20200278125
2020-09-03

Environmentally efficient smart home air-quality network system

#97
20200269688
2020-08-27

Detecting and disabling a vehicle left running while parked

#98
20200256571
2020-08-13

SYSTEMS AND METHODS FOR SUPPLYING FRESH OUTDOOR AIR INTO A BUILDING STRUCTURE

#99
20200255153
2020-08-13

Environmental control systems and methods of controlling airflow through environmental control systems

#100
20200240668
2020-07-30

Libraries, systems, and methods for minimizing air pollution in enclosed structures

#101
20200224899
2020-07-16

Carbon monoxide purge system for a property

#102
20200206675
2020-07-02

Air conditioning device and control method thereof

#103
20200173681
2020-06-04

AIR OUTLET DEVICE AND CONTROL METHOD THEREFOR

#104
20200166235
2020-05-28

Ventilation unit, system and method

#105
20200141604
2020-05-07

Condition based energy smart air circulation system

#106
20200125058
2020-04-23

Temperature control system and methods for operating same

#107
20200116372
2020-04-16

Air conditioning with recovery wheel, dehumidification wheel, and cooling coil

#108
20200088602
2020-03-19

Systems and methods for monitoring water in a building

#109
20200088439
2020-03-19

Systems and methods for energy recovery of an HVAC system

#110
20200064783
2020-02-27

Systems and methods for monitoring the movement of gas

#111
20200064008
2020-02-27

WALL-MOUNT AIR CONDITIONER AND METHOD INVOLVING SAME

#112
20200063999
2020-02-27

Systems and methods for air ventilation

#113
20200041162
2020-02-06

Heat transfer system and environmental control system with heat transfer system

#114
20200018500
2020-01-16

Dehumidification/evaporative cooling-based 100% outdoor air conditioning system and controlling method

#115
20190383505
2019-12-19

Window-type smart air purifying ventilator

#116
20190324421
2019-10-24

Temperature control system and methods for operating same

#117
20190324420
2019-10-24

Intelligent ventilation control for optimizing HVAC operations

#118
20190297855
2019-10-03

SYSTEM FOR SOLAR THERMAL COLLECTOR BASED HEATING FOR LIVESTOCK STRUCTURES

#119
20190293319
2019-09-26

Heat exchange ventilator

#120
20190285295
2019-09-19

ENVIRONMENTALLY EFFICIENT SMART HOME AIR-QUALITY NETWORK SYSTEM

#121
20190277522
2019-09-12

Smart ventilation system

#122
20190262761
2019-08-29

Method and system for improved-efficiency air-conditioning

#123
20190257534
2019-08-22

HVAC system with multi-state predictive free cooling control

#124
20190255479
2019-08-22

Contaminant scrubber of an HVAC system

#125
20190235459
2019-08-01

Methods and system for reducing energy use in buildings

#126
20190234638
2019-08-01

Monitoring system for residential HVAC systems

#127
20190219290
2019-07-18

System and method for integrated control of supply fan

#128
20190212023
2019-07-11

Damper control assembly and method for use in air flow system

#129
20190195523
2019-06-27

Fault detection diagnostic variable differential variable delay thermostat

#130
20190186762
2019-06-20

AIR HANDLING SYSTEM WITH INTEGRATED TREATMENT

#131
20190170379
2019-06-06

Air system

#132
20190162009
2019-05-30

Pulley-driven automated window or door system

#133
20190160412
2019-05-30

Ventilating device

#134
20190154284
2019-05-23

Cooling System

#135
20190120512
2019-04-25

Detection of damper motor mechanically disconnected from damper assembly

#136
20190118128
2019-04-25

AIR PURIFICATION APPARATUS FOR INDOOR WINDOW VENT

#137
20190101302
2019-04-04

AIR PRESSURE CONTROLLER FOR AIR VENTILATION DEVICES

#138
20190086114
2019-03-21

Equipment management system

#139
20190086113
2019-03-21

Air conditioning system including a ventilator that supplies humidified outdoor air

#140
20190063780
2019-02-28

Integrated heat and energy recovery ventilator system

#141
20190049121
2019-02-14

Heating and ventilation system

#142
20190046820
2019-02-14

Energy storage system and fire control method of the energy storage system

#143
20190024909
2019-01-24

Air conditioner

#144
20180372355
2018-12-27

HVAC scrubber unit with building management system integration systems and methods

#145
20180372352
2018-12-27

HVAC scrubber unit operational control systems and methods

#146
20180372349
2018-12-27

HVAC scrubber unit mechanical improvement systems and methods

#147
20180369742
2018-12-27

HVAC scrubber unit with modular control and graphical user interface systems and methods

#148
20180356110
2018-12-13

Air conditioning capable of controlling ventilation and humidity, and control method therefor

#149
20180347837
2018-12-06

Ventilation method, control device, and ventilation system

#150
20180347836
2018-12-06

System and method for operating a packaged terminal air conditioner unit

#151
20180347835
2018-12-06

System and method for operating a packaged terminal air conditioner unit

#152
20180335224
2018-11-22

SYSTEM AND METHOD FOR OPERATING A PACKAGED TERMINAL AIR CONDITIONER UNIT BASED ON ROOM OCCUPANCY

#153
20180335220
2018-11-22

Wall-mount air conditioner and method involving same

#154
20180334791
2018-11-22

Steam vent system

#155
20180299159
2018-10-18

Multi-function thermostat with intelligent supply fan control for maximizing air quality and optimizing energy usage

#156
20180299153
2018-10-18

Thermostat with preemptive heating, cooling, and ventilation in response to elevated occupancy detection via proxy

#157
20180299151
2018-10-18

Multi-function thermostat with intelligent ventilator control for frost/mold protection and air quality control

#158
20180299150
2018-10-18

Thermostat with exhaust fan control for air quality and humidity control

#159
20180283713
2018-10-04

FLUID ACTUATED FLUID EXTRACTION SYSTEM

#160
20180283705
2018-10-04

Air distribution hub

#161
20180274812
2018-09-27

Combined economizer and mixer for air handling unit

#162
20180224149
2018-08-09

Cooling system with reduced pressure drop

#163
20180224134
2018-08-09

Slim-type air processing device

#164
20180209674
2018-07-26

HVAC system with predictive free cooling control based on the cost of transitioning into a free cooling state

#165
20180187907
2018-07-05

METHODS AND SYSTEMS FOR MANAGING AIR QUALITY AND ENERGY USE IN AIR-CONDITIONING SYSTEMS

#166
20180156481
2018-06-07

Displacement ventilation systems for enclosed spaces

#167
20180141665
2018-05-24

System and method for determining the origin of an oil leakage in an air supply system

#168
20180119481
2018-05-03

Green kinetic device for balancing building temperature in different conditions

#169
20180106507
2018-04-19

Variable refrigerant package

#170
20180106506
2018-04-19

Variable refrigerant package

#171
20180106491
2018-04-19

Operating a climate control system based on occupancy status

#172
20180106490
2018-04-19

Communications between thermostat and rooftop unit of climate control system

#173
20180106488
2018-04-19

Sensor features for climate control system

#174
20180100674
2018-04-12

Variable refrigerant package

#175
20180100664
2018-04-12

Wifi vertical fan coil system

#176
20180084761
2018-03-29

System for controlled heating and ventilation of livestock structures

#177
20180059695
2018-03-01

ENVIRONMENTAL CONTROL SYSTEM

#178
20180039307
2018-02-08

Multi-mode cooling system and method with evaporative cooling

#179
20170370603
2017-12-28

System and method for identifying CO2 concentration in a building area

#180
20170350611
2017-12-07

ARRANGEMENT AND METHOD FOR AIR MANAGEMENT OF A ROOM

#181
20170347617
2017-12-07

Curtain machine having sealed control enclosure

#182
20170343227
2017-11-30

Apparatus and methods to measure economizer outdoor air fractions and fault detection diagnostics of airflow, cooling capacity, and heating capacity

#183
20170334565
2017-11-23

Human factors approach to control contaminant concentrations in aircraft supply air from engine and APU bleed air and ground air sources, and in recirculated air being delivered to aircraft cabins for the optimization of user experience and energy consumption

#184
20170321917
2017-11-09

System and method for dynamically controlling economizers

#185
20170320582
2017-11-09

Human factors approach to control contaminant concentrations in aircraft supply air from engine and APU bleed air and ground air sources, and in recirculated air being delivered to aircraft cabins for the optimization of user experience and energy consumption

#186
20170307244
2017-10-26

Air conditioning system for dehumidifying and cooling air

#187
20170307243
2017-10-26

Using estimated schedules and analysis of zone temperature to control airflow

#188
20170299209
2017-10-19

Systems and methods for minimizing compressor use in HVAC systems

#189
20170198933
2017-07-13

Predictive free cooling

#190
20170198930
2017-07-13

Wireless sensors system and method of using same

#191
20170191691
2017-07-06

System and method for controlling a blower of an energy recovery ventilator in response to internal air pressure

#192
20170191678
2017-07-06

Environment control system and devices

#193
20170176056
2017-06-22

Variable refrigerant package

#194
20170176030
2017-06-22

Air quality based ventilation control for HVAC systems

#195
20170153039
2017-06-01

Combined economizer and mixer for air handling unit

#196
20170153031
2017-06-01

Combined economizer and mixer for air handling unit

#197
20170138623
2017-05-18

Zonal demand control ventilation for a building

#198
20170130973
2017-05-11

Economizer target temperature shift during mechanical cooling

#199
20170115650
2017-04-27

Methods and system for reducing energy use in buildings

#200
20170115025
2017-04-27

Fan controller

#201
20170108239
2017-04-20

Air mixing device

#202
20170102163
2017-04-13

AIR TEMPERATURE CONTROL UNIT AND PROCESS FOR CONTROLLING AIR TEMPERATURE AND PRODUCING PURIFIED WATER

#203
20170082315
2017-03-23

Economizer having source-specific damper blade assemblies and heating, ventilation and air conditioning unit employing the same

#204
20170051940
2017-02-23

Outside-air processing device and air-conditioning apparatus

#205
20170045258
2017-02-16

Active Regenerative Heating and Cooling

#206
20170023269
2017-01-26

Integrated airflow control for variable air volume and air handler HVAC systems to reduce building HVAC energy use

#207
20170010017
2017-01-12

Systems, aparatuses, and methods of air circulations using compact economizers

#208
20170003045
2017-01-05

System and method of advanced digital economization

#209
20160363333
2016-12-15

AIR HANDLING SYSTEM WITH INTEGRATED AIR TREATMENT

#210
20160348936
2016-12-01

Temperature control system and methods for operating same

#211
20160291615
2016-10-06

Smart register apparatus and method

#212
20160282001
2016-09-29

Systems and methods for air-conditioning systems with scrubbing systems including a scrubbing bypass mode

#213
20160273791
2016-09-22

Adaptive makeup air system and method for tight enclosures

#214
20160265805
2016-09-15

Energy Recovery System and Method

#215
20160238270
2016-08-18

System, method and apparatus for use of dynamically variable compressor delay in thermostat to reduce energy consumption

#216
20160238267
2016-08-18

Detection of damper motor mechanically disconnected from damper assembly

#217
20160231007
2016-08-11

AIR CONDITIONER

#218
20160227676
2016-08-04

CONTROLLING USAGE OF RESOURCES BASED ON OPERATING STATUS AND COMMUNICATIONS

#219
20160214724
2016-07-28

Human factors approach to control contaminant concentrations in aircraft supply air from engine and APU bleed air and ground air sources, and in recirculated air being delivered to aircraft cabins for the optimization of user experience and energy consumption

#220
20160209070
2016-07-21

HVAC system and an HVAC controller configured to operate the HVAC system based on air pollutant data and user comfort

#221
20160201937
2016-07-14

Air conditioner apparatus with partitioned suction and discharge channels

#222
20160195293
2016-07-07

Environment-controlled cooling mode selection for a modular data center based on detection of contaminants and particulates in outside air

#223
20160178223
2016-06-23

Equipment enclosure with multi-mode temperature control system

#224
20160169544
2016-06-16

Unit with recovery wheel and economizer and method of control

#225
20160150682
2016-05-26

Conditioning unit of the indirect free cooling type, method of operation of such a conditioning unit, and apparatus for carrying out such method

#226
20160143182
2016-05-19

Vent control apparatus and method

#227
20160131377
2016-05-12

AIR CONDITIONING DEVICE

#228
20160106008
2016-04-14

Air handling unit and method of operating the same

#229
20160097553
2016-04-07

WHOLE BUILDING AIR VENTILATION AND PRESSURE EQUALIZATION SYSTEM AIR MIXER WITH DAMPERS

#230
20160069579
2016-03-10

Air-conditioning system and controller

#231
20160054024
2016-02-25

ERV global pressure demand control ventilation mode

#232
20160054017
2016-02-25

AIR CONDITIONING MANAGEMENT DEVICE, AIR CONDITIONING SYSTEM, AND PROGRAM

#233
20160054016
2016-02-25

VENTILATION CONTROL DEVICE, VENTILATION SYSTEM, AND PROGRAM

#234
20150375157
2015-12-31

Method and system for improve-efficiency air-conditioning

#235
20150368961
2015-12-24

Window comprising a modular drum valve

#236
20150323427
2015-11-12

Methods and apparatus for indoor air contaminant monitoring

#237
20150276249
2015-10-01

Fresh air cooling device

#238
20150211777
2015-07-30

Economizer target temperature shift during mechanical cooling

#239
20150204568
2015-07-23

Detection of damper motor mechanically disconnected from damper assembly

#240
20150184884
2015-07-02

Efficient combination of ambient air and heating, ventilating, and air conditioning (HVAC) system

#241
20150176909
2015-06-25

Advanced air terminal

#242
20150136862
2015-05-21

System and method for environmental control

#243
20150107817
2015-04-23

Systems and methods for ventilating a building

#244
20150075766
2015-03-19

Environment control system and devices

#245
20150056911
2015-02-26

SYSTEM FOR DAMPER ACTIVATION NOTIFICATION

#246
20150041114
2015-02-12

Air conditioning system with reduced power ventilation mode

#247
20150032264
2015-01-29

Air quality based ventilation control for HVAC systems

#248
20150021405
2015-01-22

System, method and apparatus for use of dynamically variable compressor delay in thermostat to reduce energy consumption

#249
20150011154
2015-01-08

Method and system for controlling ventilation in a building

#250
20140374065
2014-12-25

Energy recovery ventilator

#251
20140349563
2014-11-27

Air conditioning apparatus and air conditioning control method

#252
20140338277
2014-11-20

Retractable curtain system

#253
20140277759
2014-09-18

Method of advanced digital economization

#254
20140260692
2014-09-18

Methods and apparatus for indoor air contaminant monitoring

#255
20140080401
2014-03-20

Climate control apparatus for a cleanroom livestock building

#256
20140075977
2014-03-20

Air conditioning system for dehumidifying and cooling air

#257
20140063730
2014-03-06

Multi-mode cooling system and method with evaporative cooling

#258
20130299157
2013-11-14

Air-conditioning system and air-conditioning method for server room management

#259
20130180700
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