| SOLAR HEATING Collectors . | 10 suppliers |
| SOLAR HEATING Hot Water Cylinders . | 8 suppliers |
| HEAT PUMPS Solar Heating Connected . | 7 suppliers |
| HEATING CONTROLS Solar Heating . | 6 suppliers |
| HOT WATER HEATING SYSTEMS Solar Powered . | 6 suppliers |
| SOLAR HEATING Hot Water Heating Systems . | 6 suppliers |
| SOLAR PANELS Hot Water Heating Systems . | 6 suppliers |
| SOLAR HEATING Hot Water . | 5 suppliers |
| SOLAR HEATING Control Units . | 4 suppliers |
| SOLAR HEATING Systems . | 4 suppliers |
| SOLAR PANELS Heating Systems . | 4 suppliers |
| SOLAR HEATING Integrated Roof Kits . | 3 suppliers |
| SOLAR HEATING Pump Stations . | 3 suppliers |
| SOLAR PANELS Pre-Heating Applications . | 3 suppliers |
| UNDERFLOOR HEATING Solar Energy Sources . | 3 suppliers |
| BOILERS DOMESTIC Gas Fired: Wall Mounted : Solar Panel Linking | 2 suppliers |
| SOLAR HEATING Pump Stations Circulating Pump Stations | 2 suppliers |
| SOLAR PANELS Hot Water Heating Systems BS EN 12975-2 . | 2 suppliers |
| SOLAR PANELS Low Temperature Heating Applications . | 2 suppliers |
| SOLAR PANELS Swimming Pool Heating . | 2 suppliers |
| BOILERS DOMESTIC Gas Fired: Combination Solar Thermal Preheated Hot Water | 1 supplier |
| BOILERS DOMESTIC Gas Fired: Floor Standing Solar Panel Linked | 1 supplier |
| CLADDINGS EXTERNAL Solar Collectors Incorporated Solar Heated Air for Ventilation and Space Heating | 1 supplier |
| GROUND SOURCE HEATING AND COOLING Solar Energy Combined . | 1 supplier |
| HOT WATER CYLINDERS Domestic Solar Systems Space Heating and Hot Water Systems | 1 supplier |
| HOT WATER HEATING SYSTEMS Gas Indirect Condensing Storage Water Heaters Solar Thermal Systems | 1 supplier |
| PLUMBING UNITS Combination Cylinders Pre Plumbed Additional Solar Heating Source | 1 supplier |
| SOLAR HEATING Drain Back System Drainback Systems | 1 supplier |
| SOLAR HEATING Heat Regulators . | 1 supplier |
| SOLAR HEATING Hot Water Heating Systems Commercial Solar Thermal Gas Hybrid Systems | 1 supplier |
| SOLAR HEATING Hot Water Heating Systems Commercial Solar Thermal Systems | 1 supplier |
| SOLAR HEATING Pressurised Systems . | 1 supplier |
| STORAGE HEATERS Solar Energy Sources PV Installations with PV Surplus Production | 1 supplier |
| UNDERFLOOR HEATING Solar Powered . | 1 supplier |
