A spokesman of Sui Northern Gas Pipelines Limited (SNGPL) has appealed to the consumers in Punjab and NWFP provinces to keep heaters and geysers off so that gas could be provided to more than two million domestic consumers in a smooth manner. "We hope that consumers will respond positively to this appeal. Otherwise, SNGPL will have to resort to lowering of pressure of gas'" he said while talking to APP here on Saturday.