Deaf Energy Cymru Glossary A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - A Asbestos B Boiler Thermostat Budget Payment Scheme C Carbon Monoxide Climate Change Climate Emergency Cold Bridging Condensation D Direct Debit Double Glazing Draught Proofing E Eczema Electrical Appliances Energy Fuel Efficiency Excess Moisture F Floating Floor Fuel And Energy Fuel Debt Poverty G Gravity Brick Wall Generator H Hot Water Tank Jacket I Insulation K Kilowatt per hour KWh L Legionnaire Disease M Micro Hydro Micro CHP Mould and Mildew N National Grid Net Zero P Prepayment Meter R Relative Humidity Renewable Energy Respiratory Infections Rhinitis S Secondary Glazing Sinusitis Solar Photovoltaic Solid Brick Wall Standing charge Standing Order T Tariff Thermometer Third Party Deductions U Unit Electricity Unit Gas U-Value V Vent Ventilation W Wind Turbine