Air recirculating apparatus;Air recirculating installations;Air reheaters;Apparatus for controlling temperature in central heating radiators [valves];Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes;Appliances for heating;Burners for boilers;Burners (Gas -);Central heating boilers;Central heating installations;Central heating radiators;Chimney flues;Control devices [thermostatic valves] for heating installations;Control units [thermostatic valves] for heating installations;Control valves (thermostatic-) for central heating radiators;Cooker hobs;Cookers;Cooking appliances;Cooking hobs;Cooking installations;Cooking ovens;Cooking plates [rings];Cooking ranges;Cooking rings;Domestic boilers;Domestic gas fires;Fireplaces, domestic;Flue gas cleaning apparatus;Flues (Chimney -);Flues for heating apparatus;Flues for heating boilers;Flues incorporating fans;Fuel burners;Gas and electric ranges;Gas boilers;Gas boilers for central heating;Gas boilers for water heating;Gas boilers [other than parts of machines];Gas burner ranges;Gas burners;Gas burners (Brackets for -);Gas cookers;Gas cooking apparatus incorporating cooking grills;Gas cooking appliances;Gas cooking ovens [for household purposes];Gas cooking ovens for household use;Gas fire radiants;Gas fired back boiler units for domestic central heating;Gas fired back boiler units for domestic hot water systems;Gas fired boilers for producing domestic hot water;Gas fired broilers;Gas fired heaters;Gas fired heating apparatus;Gas fired heating installations;Gas fired space heaters;Gas fired space heating apparatus;Gas fired space heating installations;Gas fired water heaters;Gas fires;Gas fuelled central heating installations;Gas operated apparatus for cooking;Gas operated apparatus for heating;Gas operated devices used in boiling;Gas ovens;Gas ranges;Gas refrigerators;Gas space heaters;Gas water heaters;Gas water heaters [for household use];Gas water heaters for household use;Heat accumulators;Heat exchangers for central heating purposes;Heat exchangers for fireplaces;Heat exchangers for the removal of condensate;Heat exchangers for the removal of flue gases;Heat pumps;Heated towel rails;Heaters;Heaters for bath water;Heaters for baths;Heaters for shower baths;Heaters for sink water;Heaters (Immersion -);Heating apparatus;Heating apparatus and installations;Heating apparatus for use in the home;Heating apparatus incorporating flues;Heating boilers;Heating installations for fluids;Heating installations for gas;Heating installations (hot water-);Heating installations (Hot water -);Heating installations [water];Hobs;Hot water apparatus;Hot water boilers;Hot water cylinders;Hot water heaters;Hot water installations;Hot water supply heaters;Installations for central heating;Installations for cooking;Installations for heating;Oil burners;Oil fired boilers;Oil fired heaters;Oil stoves [space heaters for household use];Pipes for heating boilers;Pipes [parts of sanitary installations];Radiant space heaters;Radiator heaters;Radiator valves [thermostatic];Radiators;Radiators for central heating installations;Radiators for central heating systems;Radiators [heating];Reheaters (Air -);Space heaters;Space heating apparatus;Spark igniters for gas appliances;Temperature control apparatus [valves] for central heating radiators;Temperature control valves [parts of central heating installations];Temperature control valves [parts of central heating radiators];Temperature control valves [parts of water supply installations];Temperature controllers [valves] for central heating radiators;Temperature controlling apparatus [valves] for central heating radiators;Temperature limiters for central heating radiators [thermostatic valves] incorporating bi-metallic discs;Temperature limiters for central heating radiators [thermostatic valves] incorporating expansion rods;Temperature limiters [valves] for central heating radiators;Temperature regulators [thermostatic valves] for central heating radiators;Temperature responsive control apparatus [thermostatic valves] for central heating radiators;Temperature sensing apparatus [thermostatic valves] for central heating radiators;Temperature sensitive switches [thermostatic valves] for central heating radiators;Temperature sensors [thermostatic valves] for central heating radiators;Thermostatic valves;Thermostatic valves [parts of heating installations];Under floor heating;Underfloor heating apparatus;Underfloor heating installations;Valves as part of radiators;Valves (solenoid controls for automatically operating-) [parts of heating installations];Valves (temperature sensitive controls for automatically operating-) [parts of heating installations];Valves (Thermostatic -) [parts of heating installations];Water boilers;Water heaters;Water heaters and boilers;Water heaters [apparatus];Water heating installations.

Advice relating to preventing blockages in plumbing lines;Advisory services for maintenance;Advisory services relating to building construction;Advisory services relating to pipe laying;Advisory services relating to the installation of heating and cooling apparatus;Advisory services relating to the installation of plumbing;Advisory services relating to the maintenance of plumbing;Advisory services relating to the repair of plumbing;Boiler cleaning and repair;Boiler cleaning services;Boiler repair services;Central heating installation;Cleaning of boilers;Construction of chimneys;Emergency servicing of gas supply apparatus;Heating contractor services;Heating equipment installation;Heating equipment installation and repair;Heating equipment repair;Information relating to repair services;Information services relating to repairs;Installation of apparatus for heating;Installation of apparatus for sanitation;Installation of apparatus for ventilating;Installation of boilers;Installation of central heating;Installation of central heating apparatus;Installation of cooking appliances;Installation of energy-saving apparatus;Installation of environmental control systems;Installation of environmental engineering systems;Installation of gas supply and distribution apparatus;Installation of heating apparatus;Installation of pipe systems for conducting of gases;Installation of pipe systems for conducting of liquids;Installation of pipework systems;Installation of solar heating systems;Installation of solar powered systems;Installation, repair and maintenance of air reheaters;Installation, repair and maintenance of boiler tubes;Installation, repair and maintenance of condensing apparatus;Installation, repair and maintenance of heating equipment;Insulation of pipes;Laying of pipelines;Machinery installation, maintenance and repair;Machinery installation services;Machinery maintenance and repair;Machinery maintenance services;Maintenance and repair of burners;Maintenance and repair of gas and electricity installations;Maintenance and repair of heating;Maintenance and repair of heating apparatus;Maintenance and repair of heating installations;Maintenance of plumbing;Maintenance, repair and reconditioning of photovoltaic apparatus and installations;Maintenance services;Oil burner regulation and repair;Plumbing and gas and water installation;Plumbing maintenance advisory services;Plumbing repair advisory services;Providing information relating to the repair and maintenance of furnaces;Providing information relating to the repair or maintenance of burners;Providing information relating to the repair or maintenance of cooking apparatus and installations;Providing information relating to the repair or maintenance of gas water heaters;Renovation of plumbing;Repair of cooking apparatus;Repair of gas supply systems;Repair or maintenance of gas water heaters;Repair or maintenance of non-electric cooking apparatus and installations;Retrofitting of heating installations in buildings;Routine servicing of heating apparatus;Safe maintenance and repair;Safe maintenance or repair.

Air recirculating apparatus;Air recirculating installations;Air reheaters;Apparatus for controlling temperature in central heating radiators [valves];Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes;Appliances for heating;Burners for boilers;Burners (Gas -);Central heating boilers;Central heating installations;Central heating radiators;Chimney flues;Control devices [thermostatic valves] for heating installations;Control units [thermostatic valves] for heating installations;Control valves (thermostatic-) for central heating radiators;Cooker hobs;Cookers;Cooking appliances;Cooking hobs;Cooking installations;Cooking ovens;Cooking plates [rings];Cooking ranges;Cooking rings;Domestic boilers;Domestic gas fires;Fireplaces, domestic;Flue gas cleaning apparatus;Flues (Chimney -);Flues for heating apparatus;Flues for heating boilers;Flues incorporating fans;Fuel burners;Gas and electric ranges;Gas boilers;Gas boilers for central heating;Gas boilers for water heating;Gas boilers [other than parts of machines];Gas burner ranges;Gas burners;Gas burners (Brackets for -);Gas cookers;Gas cooking apparatus incorporating cooking grills;Gas cooking appliances;Gas cooking ovens [for household purposes];Gas cooking ovens for household use;Gas fire radiants;Gas fired back boiler units for domestic central heating;Gas fired back boiler units for domestic hot water systems;Gas fired boilers for producing domestic hot water;Gas fired broilers;Gas fired heaters;Gas fired heating apparatus;Gas fired heating installations;Gas fired space heaters;Gas fired space heating apparatus;Gas fired space heating installations;Gas fired water heaters;Gas fires;Gas fuelled central heating installations;Gas operated apparatus for cooking;Gas operated apparatus for heating;Gas operated devices used in boiling;Gas ovens;Gas ranges;Gas refrigerators;Gas space heaters;Gas water heaters;Gas water heaters [for household use];Gas water heaters for household use;Heat accumulators;Heat exchangers for central heating purposes;Heat exchangers for fireplaces;Heat exchangers for the removal of condensate;Heat exchangers for the removal of flue gases;Heat pumps;Heated towel rails;Heaters;Heaters for bath water;Heaters for baths;Heaters for shower baths;Heaters for sink water;Heaters (Immersion -);Heating apparatus;Heating apparatus and installations;Heating apparatus for use in the home;Heating apparatus incorporating flues;Heating boilers;Heating installations for fluids;Heating installations for gas;Heating installations (hot water-);Heating installations (Hot water - );Heating installations [water];Hobs;Hot water apparatus;Hot water boilers;Hot water cylinders;Hot water heaters;Hot water installations;Hot water supply heaters;Installations for central heating;Installations for cooking;Installations for heating;Oil burners;Oil fired boilers;Oil fired heaters;Oil stoves [space heaters for household use];Pipes for heating boilers;Pipes [parts of sanitary installations];Radiant space heaters;Radiator heaters;Radiator valves [thermostatic];Radiators;Radiators for central heating installations;Radiators for central heating systems;Radiators [heating];Reheaters (Air -);Space heaters;Space heating apparatus;Spark igniters for gas appliances;Temperature control apparatus [valves] for central heating radiators;Temperature control valves [parts of central heating installations];Temperature control valves [parts of central heating radiators];Temperature control valves [parts of water supply installations];Temperature controllers [valves] for central heating radiators;Temperature controlling apparatus [valves] for central heating radiators;Temperature limiters for central heating radiators [thermostatic valves] incorporating bi-metallic discs;Temperature limiters for central heating radiators [thermostatic valves] incorporating expansion rods;Temperature limiters [valves] for central heating radiators;Temperature regulators [thermostatic valves] for central heating radiators;Temperature responsive control apparatus [thermostatic valves] for central heating radiators;Temperature sensing apparatus [thermostatic valves] for central heating radiators;Temperature sensitive switches [thermostatic valves] for central heating radiators;Temperature sensors [thermostatic valves] for central heating radiators;Thermostatic valves;Thermostatic valves [parts of heating installations];Under floor heating;Underfloor heating apparatus;Underfloor heating installations;Valves as part of radiators;Valves (solenoid controls for automatically operating-) [parts of heating installations];Valves (temperature sensitive controls for automatically operating-) [parts of heating installations];Valves (Thermostatic -) [parts of heating installations];Water boilers;Water heaters;Water heaters and boilers;Water heaters [apparatus];Water heating installations.

Advice relating to preventing blockages in plumbing lines;Advisory services for maintenance;Advisory services relating to building construction;Advisory services relating to pipe laying;Advisory services relating to the installation of heating and cooling apparatus;Advisory services relating to the installation of plumbing;Advisory services relating to the maintenance of plumbing;Advisory services relating to the repair of plumbing;Boiler cleaning and repair;Boiler cleaning services;Boiler repair services;Central heating installation;Cleaning of boilers;Construction of chimneys;Emergency servicing of gas supply apparatus;Heating contractor services;Heating equipment installation;Heating equipment installation and repair;Heating equipment repair;Information relating to repair services;Information services relating to repairs;Installation of apparatus for heating;Installation of apparatus for sanitation;Installation of apparatus for ventilating;Installation of boilers;Installation of central heating;Installation of central heating apparatus;Installation of cooking appliances;Installation of energy-saving apparatus;Installation of environmental control systems;Installation of environmental engineering systems;Installation of gas supply and distribution apparatus;Installation of heating apparatus;Installation of pipe systems for conducting of gases;Installation of pipe systems for conducting of liquids;Installation of pipework systems;Installation of solar heating systems;Installation of solar powered systems;Installation, repair and maintenance of air reheaters;Installation, repair and maintenance of boiler tubes;Installation, repair and maintenance of condensing apparatus;Installation, repair and maintenance of heating equipment;Insulation of pipes;Laying of pipelines;Machinery installation, maintenance and repair;Machinery installation services;Machinery maintenance and repair;Machinery maintenance services;Maintenance and repair of burners;Maintenance and repair of gas and electricity installations;Maintenance and repair of heating;Maintenance and repair of heating apparatus;Maintenance and repair of heating installations;Maintenance of plumbing;Maintenance, repair and reconditioning of photovoltaic apparatus and installations;Maintenance services;Oil burner regulation and repair;Plumbing and gas and water installation;Plumbing maintenance advisory services;Plumbing repair advisory services;Providing information relating to the repair and maintenance of furnaces;Providing information relating to the repair or maintenance of burners;Providing information relating to the repair or maintenance of cooking apparatus and installations;Providing information relating to the repair or maintenance of gas water heaters;Renovation of plumbing;Repair of cooking apparatus;Repair of gas supply systems;Repair or maintenance of gas water heaters;Repair or maintenance of non-electric cooking apparatus and installations;Retrofitting of heating installations in buildings;Routine servicing of heating apparatus;Safe maintenance and repair;Safe maintenance or repair.