If your furnace is blowing cold air, check the filter to see if it should be replaced. After that, be sure to change your filter regularly and always use the properly-sized replacement.

Understanding why your AC isn't blowing cold air can save you a service call, hopefully some money, and a lot of discomfort. Knowing the signs and undertaking a little proactive maintenance can ...

If your heater is blowing but isn't sending out warm air, you need to follow these steps to get it fixed. Here's how to keep your furnace working.

Turning on an air conditioner (Image credit: Shutterstock) Why is my AC not blowing cold air? — here’s what HVAC experts say Air conditioner unit outside (Image credit: Shutterstock) ...