Related by context. Frequent words. (Click for all words.) 65 boilers 59 hobs 59 underfloor heating 59 biomass boilers 58 1kW 57 furnaces 56 5kW 55 electrically heated 55 microturbines 55 #KW [001] 54 water heaters 54 biomass boiler 54 microturbine 54 steam boilers 54 downlights 53 water heater 53 fluorescent fixtures 53 particulate filters 53 particulate filter 53 thermally efficient 53 halogen bulbs 53 diesel particulate filters 53 airconditioners 53 pellet stove 52 compact fluorescent lamps 52 gas recirculation 52 diesel particulate filter 52 boiler 52 dimmer switches 52 low flow showerheads 52 cavity wall 52 humidification 52 insulations 52 CCGT 51 flue gases 51 centrifugal pumps 51 furnace 51 double glazing 51 refrigerant 51 fluorescent lamp 51 #kw [002] 51 dual flush toilets 51 Lithium Ion batteries 51 patio heaters 51 radiators 50 glazed windows 50 clothes washers 50 tankless 50 fitted kitchens 50 refrigerants 50 anaerobic digesters 50 underfloor 50 radiant barrier 50 #kW [001] 50 Inverters 50 HEPA filters 50 cogeneration 50 combustion turbines 50 HVAC 50 lumen output 50 NOx reduction 49 bulbs CFLs 49 air conditioners 49 dimmable 49 3MW 49 radiant heating 49 biogas plants 49 HEPA filter 49 #.#kW [001] 49 Thermostats 49 microgeneration 49 Selective Catalytic Reduction SCR 49 halogen lights 49 programmable thermostats 49 biogas 49 heaters 49 compressors 49 inverter 49 UPSs 49 pane windows 49 heat exchangers 49 thermal insulation 49 kilowatt kW 49 cook stoves 49 incandescent lamps 49 LED lamp 49 cooktops 48 diesel engines 48 EcoSmart 48 programmable thermostat 48 condensers 48 kitchens bathrooms 48 electronic ballasts 48 HEPA 48 loft insulation 48 pipework 48 convertors 48 wood boilers 48 stoves 48 louvres 48 MR# [003]