Certain telltale signs indicate it's time to consider replacing heating and cooling equipment, or improving the performance of your overall system. It may be time to call a professional contractor to help you make a change if:
Consider replacing with ENERGY STAR qualified equipment that uses 20 percent less energy than new 标准模型s.
Consider replacing with an ENERGY STAR qualified furnace, which is 15% more efficient than a conventional furnace. 如果你有一个锅炉, consider replacing with an ENERGY STAR qualified boiler that is 10% more efficient than a new, 标准模型.
Your cooling or heating equipment may have become less efficient.
Improper equipment operation, duct problems or inadequate insulation could be the cause.
Install an ENERGY STAR qualified programmable thermostat or have a good contractor install one and instruct you on its use — to start saving energy and money while they're away or sleeping.
可怜的设备操作, 设备不足, and leaky ductwork can cause the air to be too dry in the winter or too humid in the summer.
Leaky ducts can pull particles and air from attics, crawl spaces and basements and distribute them throughout your house. Sealing your ducts may be a solution.
You could have an undersized duct system or a problem with the indoor coil of your cooling equipment.
能源之星- U.S. Environmental Protection Agency - U.S. 能源部