In addition to safety, the regulator plays a significant role in energy conservation. By maintaining a constant pressure, it ensures that gas appliances run efficiently without wasting fuel due to excessively high or low pressures. For instance, a gas furnace operating at too high a pressure might heat up a room faster than necessary, leading to energy waste. Conversely, an appliance starved of gas due to low pressure will struggle to function effectively, consuming more gas in the process.