Raising the temperature of a room can be done with the use of either an electric heater or by opening windows. But there are some disadvantages to both methods, so it's important to know what you're getting into before making your decision. Electric heaters are generally considered more expensive than other heating alternatives and they also produce emissions that could potentially cause health problems. On the other hand, open windows may not provide enough warmth during cold weather, which is why many people choose them for warmer seasons. The best thing about these two options is that you have plenty of time to research and compare their pros and cons before making your final choice.