Koolen Electric Heater for Sale. Works perfectly, heats up very quickly with top and front elements. Safe and easy to use. Price: 80 SAR (Fixed). Coolen heater for sale. Works in excellent condition, fast heating from the top and front. Easy to use and safe. Price: 80 Riyals (Final) Koolen electric heater for sale. Works in very good condition, heats from both top and front. Safe and easy to use. Price: 80 Riyals (Fixed) Contact Number