If it is, then it will blow air continually, whether or not the furnace produces heat. If your furnace always blows air, sometimes hot and sometimes cold, then it’s likely a fan setting issue.

Summer temperatures are climbing, but if your AC is pushing out warm air instead of a chill breeze, these quick fixes can ...

Another reason why your AC isn’t blowing cool air is low refrigerant levels. Essentially, refrigerant is the substance that your air conditioner needs to remove heat from the air inside your house.

If you're wondering how to cool down a room and why your AC is not blowing out cold air, there may be a few reasons. Here's what an expert has to say about it.

“When an AC or heat pump is blowing warm air due to a refrigerant leak, always trust a professional HVAC technician to make the fix,” advises Fournier.

For ductless heat pumps, the most popular in Minneapolis, it's $6,000 to $7,000 per house zone, while forced air heat pumps cost between $10,000 to $20,000, depending on the model.

Before you need your heat, experts say you should turn it on for five minutes, make sure the blower comes on & hot air is coming through the vents.

If you’re not sure what type of heating system your home has, check out our guide to the 10 types of home heating systems. A furnace blowing cold air can be a stressful situation.