If you do not plan on staying in the house very long, refinancing may not be in your best interests.
Be Inquisitive. It's your responsibility to make sure that you understand the terms of your loan. Ask questions and listen carefully to the answers. Don't sign your loan documents until you are satisfied with the information and confident that you have made the right decision.
The majority of your mortgage payment goes toward paying interest. To save an astounding amount of money over the long term, choose a mortgage loan with a lower rate and a shorter payback term. A 15-year mortgage may be just what the financial planner ordered. This type of loan carries a larger monthly payment; but if your budget can withstand the jolt, you can save big bucks over the long haul.
Pull your credit report from the bureaus and review it for any negative items (late pays, collections etc) and inaccurate detail. Try to dispute negative items and remove them from the report. If required pay off any unpaid debt. Otherwise, you won't get a low rate and may not even qualify. Of course there are lenders in the subprime market who may offer you a bad credit refinance loan, but it's better to avoid them as they'll possible charge higher rates and fees.