| Patents for F24D 5 - Hot-air central heating systems; Exhaust-gas central heating systems (1,847) |
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| 10/18/1990 | DE3925264C1 Oil or gas fired IR and air heater - has combustion chamber enclosed in jacket to form heat exchange space fed by fan |
| 10/18/1990 | DE3911787A1 Church air heater |
| 10/17/1990 | EP0392591A1 Infrared heating system |
| 10/17/1990 | CN2064026U Warming machine |
| 10/16/1990 | US4962884 Heat accumulating type electric underfloor heating system having upper and lower cavities and a method for heating the same |
| 10/10/1990 | EP0391818A1 Gas burner unit for radiant tube heater |
| 10/07/1990 | CA2014218A1 Gas burner unit for heating device having a radiant tube |
| 10/04/1990 | WO1990011476A1 Method and arrangement for controlling the temperature in buildings |
| 09/26/1990 | EP0389021A2 Hot air induction and diffusion unit for heating a space, for example a room |
| 09/11/1990 | US4955285 System for covering the energy requirement of a room |
| 08/21/1990 | US4949902 Building heating system |
| 08/14/1990 | US4947930 Heat bonnet for heat pump |
| 08/08/1990 | CN2060209U Domestic hot tube type hot-air furnace |
| 08/01/1990 | EP0380349A1 Improved method and apparatus for preheating ventilation air for a building |
| 07/28/1990 | WO1990008920A1 Radiant tube and reflector hanger |
| 07/24/1990 | US4943003 Control device for heat pump with hot-water supply facility |
| 06/28/1990 | DE3843067A1 Heat recovery in the case of a skeleton construction system for housing construction |
| 06/27/1990 | CN2058731U Infrared radiation gas heater |
| 06/20/1990 | CN2058468U Heater for warming |
| 06/19/1990 | US4934338 Method and apparatus for preheating ventilation air for a building |
| 05/31/1990 | DE3839497A1 Housing for a hot-air heating system with air filter |
| 05/16/1990 | EP0368804A1 Tabular support element for building construction and civil engineering |
| 05/16/1990 | CN2057269U Gas air-warmer |
| 05/08/1990 | US4923733 Flexible form sheet |
| 05/03/1990 | DE3837166A1 Building heating system |
| 05/03/1990 | DE3837060A1 Apparatus for radiant and hot-air heating |
| 04/19/1990 | WO1990004135A1 Method for heating and/or cooling air supplied into a building |
| 04/18/1990 | CN2056220U Energy-saving heating box using flue gas |
| 04/10/1990 | US4915020 Radon control in dwellings |
| 04/04/1990 | CN2055575U Automatic-control thermostatic warming device |
| 03/21/1990 | CN2054881U Coal stove hot air delivery unit |
| 03/21/1990 | CN2054880U Case type convective combustion heating stove |
| 03/21/1990 | CN2054879U Multifunction domestic hot tube air heater |
| 03/21/1990 | CN2054878U Domestic circulating hot water heating apparatus |
| 03/13/1990 | CA1266571A1 Hot water heating and defrost in a heat pump circuit |
| 03/08/1990 | WO1990002300A1 Heat pump for heating or cooling confined spaces, and also for heating tap water |
| 02/13/1990 | US4899728 Method and apparatus for preheating ventilation air for a building |
| 01/30/1990 | US4896831 Underfloor heating system and method for heating the same |
| 01/03/1990 | CN2050549U Multi-purpose air conditioning and heating stove using coal as energy |
| 01/03/1990 | CN1038511A Heater |
| 12/21/1989 | DE3820621A1 Method and installation for heating a building, in particular a (solar) dwelling house |
| 12/19/1989 | US4887438 Desiccant assisted air conditioner |
| 12/14/1989 | DE3819995A1 Solar installation for space heating |
| 12/14/1989 | DE3818809A1 Plate-like tile |
| 11/16/1989 | DE3814897A1 Heat radiator with catalytic exhaust-gas purification, exhaust-gas return and heat recovery |
| 09/28/1989 | DE3809093A1 Ventilation system for rooms |
| 09/26/1989 | US4869230 Space heating appliance |
| 09/19/1989 | US4867377 Method of controlling the conditions in a dwelling-house |
| 08/09/1989 | EP0326837A2 Hollow floor and method for its production |
| 08/03/1989 | DE3801585A1 Apparatus for heating rooms |
| 07/18/1989 | US4848315 Apparatus for supplying heated air to an air system |
| 06/27/1989 | US4842048 System for drawing the open air indoors |
| 05/02/1989 | CA1253385A1 Bay window with ventilator |
| 04/18/1989 | US4821475 Duct mounting structure for prefabricated curtain wall with air conditioning system |
| 04/11/1989 | US4820903 Closed type heating apparatus |
| 04/04/1989 | US4817349 Apparatus for heating, ventilating, cooling and regulating the temperature of rooms of a building |
| 03/22/1989 | EP0307415A1 Cavity floor. |
| 03/08/1989 | EP0196303B1 A method of controlling the conditions in a dwelling-house |
| 02/07/1989 | US4802529 Refrigerant-heating type heating apparatus |
| 01/17/1989 | US4798192 Far-infrared radiating system |
| 01/12/1989 | DE3721453A1 Heat exchanger |
| 01/12/1989 | DE3721249A1 Structural system of the steel-skeleton construction type, in particular for the construction of housing |
| 01/11/1989 | EP0298790A1 Installation for heating by radiation |
| 01/10/1989 | US4796519 Prefabricated window unit with air conditioning system |
| 01/05/1989 | DE3720554A1 Structural element in the form of a panel |
| 12/29/1988 | DE3815704A1 Warm-air floor-heating system using hollow-chamber tiles |
| 12/22/1988 | DE3719310A1 Solar installation for space heating |
| 12/15/1988 | DE3719134A1 Air discharge device |
| 12/13/1988 | CA1246314A1 Shuttering element for hollow-floor structures |
| 11/22/1988 | CA1245116A1 Method and device for operation of a heating plant |
| 10/13/1988 | DE3711116A1 Heating apparatus |
| 10/11/1988 | US4776385 Air ventilation control system |
| 09/27/1988 | US4773309 Method of reducing the level of irritants and contaminants |
| 09/13/1988 | US4770233 For greenhouses |
| 09/07/1988 | WO1988006702A1 A ventilation and heat recovering system for plural room buildings |
| 08/30/1988 | US4766878 Far-infrared radiating system |
| 08/16/1988 | CA1240654A1 Warm-air heating apparatus |
| 08/16/1988 | CA1240547A1 Fresh air device for mobile home or other dwelling |
| 07/28/1988 | DE3719278A1 Stove |
| 07/28/1988 | DE3710388A1 Structural element |
| 07/05/1988 | US4754614 Prime-motor-driven room warming/cooling and hot water supplying apparatus |
| 06/07/1988 | US4748968 Gas fired device for generating heat for dwelling |
| 05/31/1988 | CA1237367A1 Radiant heater system |
| 05/26/1988 | DE3638791A1 Hot-air duct for heating a wooden house |
| 05/03/1988 | CA1236067A1 Hot air type heater |
| 04/14/1988 | DE3634022A1 Vertical recirculating-air room heating system, in particular for dwelling rooms |
| 03/31/1988 | DE3632667A1 Sterile atmosphere central heat generator |
| 03/30/1988 | EP0261639A2 Far-infrared radiating system |
| 03/17/1988 | DE3728854A1 Space-heating device |
| 03/17/1988 | DE3630098A1 Method and apparatus for combined radiant and hot-air heating with hot flue gases |
| 03/15/1988 | US4730771 Air duct |
| 03/15/1988 | US4730599 Radiant tube heating system |
| 03/01/1988 | US4727854 High efficiency infrared radiant energy heating system and reflector therefor |
| 02/23/1988 | USRE32607 Compact attic mounted solar heating pack assembly |
| 02/23/1988 | CA1233216A1 Method of controlling a space heating system |
| 02/11/1988 | WO1988000997A1 Cavity floor |
| 02/03/1988 | EP0255039A2 Under floor heating |
| 02/03/1988 | CN87207527U Horizontal air warming furnace with reciprocating grate |
| 01/27/1988 | EP0254286A2 Heating system |
| 01/05/1988 | US4716883 High efficiency infrared radiant energy heating system and method of operation thereof |