Bulgaria Guide: Heating & Air-conditioning, Heathing systems and costs: As a mountainous country Bulgaria has

LED lamps and fixtures, batteries, inverters, fans, multimeters, voltage stabilizers and a wide range of electronics and components. Source: Electronic components, automation, electrical materials, LED, fans,

Heat pump – maximum efficiency with minimum bills. Complete solution for the needs of your home. Up to 70% lower bills for heating, cooling and hot water. Source: Heat pump – heating, cooling and hot water in one

Source: Heat Pumps | AirTech

Estimating the Cost and Energy Efficiency of a Solar Water Heater Source: Estimating the Cost and Energy Efficiency of a Solar Water Heater | Department of Energy

You would think that the more sunlight that hits a solar panel, the better. When it comes to efficiency though, that’s not the case – as photovoltaic cells heat up their efficiency decreases. To capture that heat and put it to good use, a team of scientists from Brunel University London has created a hybrid…