Nobody likes sitting in a chilly house in the middle of winter. But heating and cooling problems are common, and unfortunately, by the time you're paying to have them fixed, your furnace or air conditioner is usually pretty broken down. Most people don't have the expertise or equipment to get their HVAC system up and running again. Here are some issues that you may encounter, along with some tips for how to troubleshoot them: Noisy furnace. If the furnace makes popping sounds when it turns on or off, stumbles along slowly or has other symptoms of a malfunction, then it's probably time to call a technician. The problem might just be a dirty filter, but if the noise is persistent, you'll want to get it checked out. If your furnace provides heat that's too hot or cold for your taste, then check the thermostat to make sure it's set correctly.
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