You have to give criminals credit, they're definitely opportunistic. The Better Business Bureau has issued a warning about scammers using the frigid temperatures to separate victims from their money.

It works like this. Someone will knock on your door saying that they are a contractor or some type of utility worker. They'll say that they need to take a look at your furnace and it's piping. Then they'll tell you that you'll need some expensive repairs or your furnace will break down in the near future.

If the victim agrees to get the repairs then they'll fake the "repairs" and then stick the homeowner with a big bill.

The obvious way to avoid this is to not allow anyone to check your equipment that you didn't personally call to investigate.

People can fall for this one pretty easily this time of year because the thought of not having heat during a sub-zero cold spell can make you do illogical things.

If someone does try to solicit you for unrequested repairs, try to get their information and pass it along to police.

Stay safe out there folks!